The new Da Vinci Kids App is here! The crust is made up of tectonic plates, which are in constant motion. Italy is sandwiched between the main huge African Plate and the large Eurasian Plate. A great powerpoint about plate tectonics. The unit is designed for KS2 students and includes twelve fully-planned lessons complete with differentiated activities and worksheets. This video investigates the features of constructive, destructive and transformational plate boundaries and provides a starting point for students to find out more about each one, relating this back to location knowledge and understanding.\rThis clip is from the series Explain This\rThis short film is relevant for teaching Geography at KS3 in England, Wales and Northern Ireland and 3rd and 4th Level in Scotland.\r\rFor BBC Teach website: https://www.bbc.com/teach\r\rFor free in depth teachers notes, follow the links via the cards. Tall, steep volcanoes can also form as a result of the denser rock melting and the magma being forced up to the surface. Plate tectonics is a theory of geology.The plates move using three types of movements.They are: convergent, divergent and transform movement. 100 per year. 80% of the worlds earthquakes occur in this area. This resource is designed to be cut up to create a jigsaw puzzle activity for students to complete, as they can use a world map to help them piece the continental plates back together in the correct . The tectonic plates are made up of cooler rigid rocks of the crust and upper mantle. 1 0 obj (source BBC Bitesize) Task 3 - Watch the video beneath that will re-visit what we have learnt so far and give you some new information on what we will be doing next. Take a video clip of your eruption to show me! The word "volcano" comes from the Roman name "Vulcan". A short animated film for secondary schools describing the factors that determine the climate of a country and the five main climate zones of the world. It goes down through Japan and then straight into New Zealand. To comply with the new e-Privacy directive, we need to ask for your consent - It's very thin. The model divides the cooler hard upper layers of the earth into pieces called tectonic plates. It is 13,677 feet above sea level. Their movements change the planet's features, depending on how the plates meet. Alfred Wegener was the first Scientist to propose that the continents fit together like a puzzle and over time moved apart. Alfred Wegener was the first Scientist to propose that the continents fit together li. M'NhnL'LR1]Ro8Unv7;s'8yB+$h7tT2fZw$.2Z2d y@,A^'g}Ldu9m}\xG||ncxj ~=Zz {855^cMbA_hx:$89@0qT$'n_`BzTw="r:l>UU_mBcdhf QDb"*6;*6njZ[loez2a5k6+vWZUp.`YR/.PJ5&5M*Zw FriGuQ^Q]8'NGG 7`v'^` 82'xeI_:),D2xs5)"'A4%`l?eE|. Certain types of shrimp, for example, have adapted . 2 0 obj 15 major Tectonic Plates Labelled diagram. **Ig=JrQ5(ij!M_U~DVO4lztmj:{@QD`7"@C7)B.s`+R@oTM\ {L(N: dw@i.S V7 g 1hW$R0heB$29Awg?QHl_]X?> imW0Nx!]T3@{. The theory of plate tectonics It is a thin layer between 0 - 60 km thick. It is broken into large segments called plates. There would be a mass extinction of life on Earth. eildon hills melrose remnants of the borders volcanic. This film explores the causes of earthquakes. Get weekly videos, articles, play ideas and mocomi updates in your inbox, Geography | 7-14 yrs | Reading Pod, Interactive. Find out more. If you wish to subscribe straight away, visit our Join Us page. Tes classic free licence. by Ahamilton. Revise GCSE Geography and learn about the Earth's structure, tectonic plates, constructive and destructive plate margins, collision zones and more. It investigates the features of constructive, destructive and transformational plate boundaries and provides a starting point for students to find out more about each one, relating this back to location knowledge and understanding. The tectonic plates that make up the continents are a combination of the crust and the outer mantle and they move, although it's so slow that we can't even feel it - around a few inches a year! Some plates are crunching together, and may form mountains. 3 0 obj These plates crash into each other, causing stress on the surface, break, slip, gets stuck, build pressure causing earthquakes and volcanic activity. The following quiz tests your knowledge on Plate Tectonics. Geography . Most of the active volcanoes are found on the Western edge of the ring of fire. South America has a great example of a convergent plate boundary. Ltd. All Rights Reserved. Or take a look around the website and start at our Home page. Inner Core. 'tr*L{ G B`v_d!.X(q5|49z;|BV^Z(q"z/egn%d_Uz8Q7CY3ND8#X+?=P% pV #P At which type of plate boundary is one plate pushed down into the mantle? Less than fifty years later, scientists realised that all of the evidence suggested that Wegener was correct and in the 1960s, evidence of seafloor spreading was the final piece of evidence that showed he was correct. They are formed at the centre of plates, well away from plate boundaries, Good examples of these are the Alps (African plate colliding with the Eurasian plate), the Himalayas (Indian plate hitting the Eurasian plate) and the Andes (the Nazca plate hitting the South American plate), You can find more about this topic by visiting. He believed that they had once all been joined together in a single landmass. A short animated film for secondary schools detailing tectonic plates, their movement and boundaries, and what this means for Earth. It's also extremely hot. The main tectonic plates can be seen on the map above like pieces of a jigsaw. Unit B Bayhorne Lane, Horley, Surrey RH6 9ES, United Kingdom. Chemistry of the atmosphere 10. ppt, 263.5 KB. And the crust is this layer of solid rock that we live on. 1. The force of this collision is so great that mountains are created. Plate tectonics is the theory that Earth's outer shell is divided into large slabs of solid rock, called "plates," that glide over Earth's mantle, the rocky inner layer above Earth's core . We use cookies to make your experience of our website better. x),rYjen-hlr>R(| 2@$2 P. Super easy to download, bursting with ideas.&nbsp;Talk your class through the Tectonic Plates Information PowerPoint and cover the basics - the Earth's surface is made up of, these plates move over millions of years and the position/shape of landmasses have changed as a result.&nbsp . Try to think of these two layers as toffee: The centre of the Earth is very hot and this heat moves outwards to the surface; one way that it does this is in giant convection (warm things rise and cooler things sink) currents in the softer mantle rocks. For your GCSE, you are expected to know how this theory explains how the natural hazards of volcanoes and earthquakes occur as well as understanding how humans deal with them. Read about our approach to external linking. These four mechanisms include, mantle convectionRidge PushSlab PullAnd Slab SuctionTranscript: http://www.moomoomathblog.com/2021/03/how-tectonic-plates-move.html Login or Register above to download the content. It stretches for 40,000 kilometres and has 755 of the worlds volcanoes. The above video may be from a third-party source. Use a mind map type of diagram to show the main points of the Plate Tectonics Model. Each type of plate boundary creates its own unique landforms - fold mountains, ocean trenches, shield and composite volcanoes, fissure volcanoes to name just a few. doc, 191 KB. The Tectonic Plates have been moving for millions of years since a giant 'super-continent' called Pangaea started breaking up 200-180 million years ago. Tectonic plates are pieces of the rocky outer layer of the Earth known as the crust. Mount Ruapehu in New Zealand is one of the most active volcanoes. Exactly what I was looking for. What features are found at plate boundaries? A large earthquake that occurs at shallow depths will have a greater effect at the surface of the Earth. French. This is the free planning overview for Volcanoes & Earthquakes. Beneath the crust lies the mantle. The heart pumps blood 24/7 to drive the circulatory system. These plates are constantly moving, and volcanoes, earthquakes and sometimes mountains are found at the plate boundaries. Make sure that you are familiar with these terms, the examiners love to test you on them! KS2 Geography Mountains. Earthquakes are very common at this type of boundary as the mountains are pushed upwards by the force of the plates' movement. The Pacific plate is quite enormous and thus it interacts with a number of small and large plates and cause earthquakes. The down going plate bends downwards causing the surface to break. USGS Public Domain. % Compressional Boundary (compression pushes together). Volcanoes and earthquakes can have devastating impacts upon people who live near by. A short film for secondary schools explaining glaciation: what it is, how it shapes the land and the effects of climate change on the worlds glaciers. questions and answers fun quizzes how to write questions bbc bitesize 149 best trivia questions and . Plate tectonics is the scientific theory that attempts to explain the movements of the Earth's lithosphere that have formed the landscape features we see across the globe today. Subject: Chemistry. When the plates collide, the denser plate, usually the oceanic one, is forced underneath the continental plate. This short film is an ideal tool to help students find out more about the tectonic structure of the Earth and the processes that create volcanoes and earthquakes. Learn how the tectonic plates move. "|&o .Q2k%JyB|w4|m=ZNC\q tGVCG<4'(; \^Im/3l =g>@kJ;ZJJh rAHUf The crust is the solid rock layer upon which we live. Temperature: 5,000C - 6,000C State: Solid Composition: iron and nickel. 2. It illustrates the plate boundaries of the Earth, how these are constantly moving, and how earthquakes occur when these boundaries more past, into or away from each other.The film also looks at the different precautions people can take to minimise the damage caused by earthquakes and, in this way, illustrates to pupils the link between physical and human geography.\rThis clip is from the series Explain This\rSuitable for teaching Geography at: KS1 and KS2 in England and Wales, Early and 1st and 2nd level in Scotland and Foundation and KS1 in Northern Ireland.\rFor BBC Teach website: https://www.bbc.com/teach\r\rFor free in depth teachers notes, follow the links via the cards. The solid inner core is made of iron and nickel and is as hot as the surface of the sun. If Earth was the size of an egg, the Earth's crust would be as thin as the eggshell. Enter your email address and name below to be the first to know. One plate is pushed below the other and destroyed by melting in the mantle. OK, the situation is much more complex than that but keeping that picture in your mind works at GCSE. This is the outer solid and cool layer of rocks. Earth's fault lines - the edges of plates; faults can rub together, push toward each other, or pull away from each other. The ring closes in Antarctica where there are many active and dormant volcanoes. As the Nazca Plate collides with the South American Plate, it's forced underneath it creating the ever-changing Andes Mountains. I agree - Share through facebook; Share through pinterest; File previews. Resource type: Other. Where they meet we have different types of boundaries and these lead to different types of volcanoes, earthquakes and landforms. At which type of plate boundary do you get only earthquakes? This is . Major earthquake and serious damage caused. Students could investigate what life is like at each type of plate boundary and how human life has adapted to the physical environment created by the movement of these plates. Footage shows examples of hard and soft engineering techniques. A short film for secondary schools explaining primary and secondary industries. The mantle is made up of magma, or molten rock. Where the movement of currents and the mantle converge, like this, plates are pushed together. He made his claim in the early part of the 20 th century but scientists of the time dismissed his ideas as being silly. No thanks - Over time these move and this helps to explain where most of the earthquakes and volcanoes occur. Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements. All the resources described in this unit . A good example of this is the Andes mountain range in South America. About 80% of volcanic eruptions and earthquakes happen close to where two tectonic plates meet. What is thought to move the plates around? Download it now: https://davincikids.onelink.me/ZvWH/ytThe ground beneath our feet is not as immobile as it seems. By definition, the word "plate" in geologic terms means a large slab of solid rock. Download your resources and pay in 3 interest-free installments with Klarna, Pay in 3 interest-free installments with Klarna. These currents in the mantle pull the Tectonic Plates above them. These subjects may contain both Guides for students and Classroom videos for use by teachers. There are three types of plate boundary (also called plate margins), constructive, destructive and conservative. He made his claim in the early part of the 20th century but scientists of the time dismissed his ideas as being silly. These plates are nothing but enormous slabs of the Earths crust which move, break and then fit into each other like pieces of a puzzle. q how many straight edges does a cube have answer 12 q which layer of planet earth is made up of tectonic plates inner core web 23 jan 2023 the quiz questions will test your knowledge on everything across sport And they are moved around, constantly fuelled by energy from the very hot mantle below. The tectonic plates make up the outer shell of planet Earth, called the lithosphere. In plate tectonics, Earth's outermost layer, or lithosphere made up of the crust and . by Vtous. The soft layer is like a toffee that you put somewhere warm for a few hours like a trouser pocket. His idea was brilliant but he had a problem. 3.3 Something went wrong, please try again later . What are the three different types of plate boundary? Once every year or two. That's about 27% of all the energy in Kenya, according to KenGen, the parastatal company that . stream xr7U9kq`NUsu6}P5]v-z{xsS?V_]Wf|G1%EIr%X}?/_zH/qQ8\~xn[no{/r,I(Q!Q&fc*(g$b5c?#]XC!w"$J3d It is called so because it is shaped as a horseshoe and it has more exploding, active volcanoes and earthquakes than any place on the earth. Illustrated with case studies, this short film for secondary schools explains the causes and results of coastal flooding, focussing primarily on instances in the UK. 1. Raj.nandhra's Shop. Reviews. Please create account/login through {{ customer_email }} email. i1Tkge#] A yF2tQ@5FIsf, ? volcanoes and the making of scotland The South America subduction zone, off the coast of Chile, created the largest known earthquake in 1960. He couldnt explain how the plates moved apart.Since this time Scientists have proposed at least four mechanisms to explain how tectonic plates move over the Earths surface. It is believed that these currents are the 'engine' that moves the plates around the surface of the Earth, carrying the continents with them. The rocks here are extremely hot and slowly flow in giant convection currents. Earth's crust and tectonic plates create earthquakes. 10-15 per year. The metal at the inner core stays solid because of the incredible . A short film for secondary schools explaining the common responses to flooding and the methods employed to prevent and reduce flooding. The hard layer is like a toffee in the fridge - hard enough to break your teeth. Learn about the Ring of Fire - an area surrounding the Pacific Ocean where most of the earth's volcanoes and earthquakes occur. - Geography for Kids| Mocomi, https://mocomi.com/embed/content.php?c=91075|The Ring of Fire|https://mocomi.com/the-ring-of-fire/. It is home to 90% of the world's earthquakes and 75% of the world's volcanoes. For kids aged 6-12 and their families, it has to be Da Vinci. Its the perfect accompaniment to PlanBee's Volcanoes Geography scheme of work for Year 3/4 or the Earthquakes lesson withinthe Extreme Earth Topic for Year 5/6. }y[.M:Jq$(4ENhtJT3 tR}LylPE\8sYfyTQC Where the movements of the currents in the mantle separate, like this, plates move apart. The plates fit together like jigsaw pieces to make up Earth's surface. "Tectonics" is a part of the Greek root for "to build" and together the terms define . This film explores the causes of earthquakes. volcanoes and the making of scotland by brian upton. The Tectonic Plates have been moving for millions of years since a giant super-continent called Pangaea started breaking up 200-180 million years ago. KS2 Statutory Assessments; Liddington Residential 2023; Mental Health and Well-Being; Parent Forum; . Create your own tornado The ring of fire is a ring of volcanoes and earthquakes that occur along: 3. <> Volcano facts. This short film is an ideal tool to help students find out more about the tectonic structure of the Earth and the processes that create volcanoes and earthquakes. Be the first to know about new planning, articles, discounts and free stuff! \r\rSUBSCRIBE TO BBC TEACH YOUTUBE: https://www.youtube.com/bbcteach?sub_confirmation=1\r\r=====================\r\rTeaching Primary Geography at KS1 | KS2\rFollow this link for Teacher Notes:\rhttps://www.bbc.co.uk/teach/class-clips-video/geography-ks1--ks2-earthquakes/zbr2mfr\rFor our Primary Geography playlist: \rhttps://www.youtube.com/playlist?list=PLcvEcrsF_9zKxYSbFe_DMWK_VO2phjBjLExplain This playlist: https://www.youtube.com/playlist?list=PLcvEcrsF_9zIzZSZEfQcmaTIS8DfSz5ZI\r=====================\r\rGet in touch on:\rTWITTER: https://twitter.com/bbc_teach\rFACEBOOK: https://www.facebook.com/BBCTeach/\r\rMore resources from BBC Bitesize: https://www.bbc.co.uk/bitesize Earthquakes happen when two tectonic plates scrape against each other. The outer core - a fluid layer that lies above Earth's solid inner core and below its mantle. When the plates finally become 'unstuck', which of the following natural hazards occurs? There are non-explosive volcanoes and small earthquakes associated with this type of plate boundary. by 10downo. Others are splitting apart. What is the name given to the places where the plates meet? The Earth is made from distinct layers, one of which is the crust. The Outer Core: the layer that the tectonic plates sit on. Usually found in a mountain, the opening allows gas, hot magma and ash to escape from beneath the Earth's crust. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . A short film for secondary schools offering explanation of the causes and effects of river flooding. The usual example of this sort of boundary is the San Andreas fault of North America. scotland co uk upton. Popocatepetl in Mexico is the most dangerous active volcano. The rocks on either side become jammed together and incredibly large forces build up as the plates either side continue to move. I chose to supplement it with more writing opportunities but its well worth the money. The plate that is pushed down into the mantle is the one that is destroyed. The plates are made of solid rock. Its the perfect accompaniment to PlanBee's Volcanoes Geography scheme of work for Year 3/4 or the Earthquakes lesson within the Extreme Earth Topic for Year 5/6. endobj 7.0 to 7.9. The ring of fire was caused by the movement of the tectonic plates. endobj ring of fire mapped how many volcanoes are erupting in. Want to be notified when our magazine is published? Plates can also move past each other, like at the San Andreas Fault in the USA, which forms the tectonic boundary between the Pacific Plate and the North American Plate. How can plate boundaries change the landscape? It is called so because it is shaped as a horseshoe and it has more exploding, active volcanoes and earthquakes than any place on the earth. Find amazing facts about animals, science, history and geography, along with fun competitions, games and more. It explores the location of tectonic plates across the globe and explores three different types of fault line and what can happen at each. Children could research the types of animals that live in volcanic regions and how they are adapted to their surroundings. Download it now: https://davincikids.onelink.me/ZvWH/ytThe ground beneath our feet is not as immobile as it seems. Convergent Boundary (converge means to move together). The Ring of Fire is the geographical area around the edges of the Pacific Ocean. Where two plates rub past each other in opposite directions is a: 4. They are a great resource, here are the links: . "But who was Vulcan?" you might ask. At 86 megawatts, the Olkaria VI expansion will push the project's total production to 791.5 megawatts. 8.0 or greater. This quiz is only concerned with the physical geography of what has been termed the Restless Earth. endobj What are tectonic plates ks2? Learn how the layers of the Earth are structured, and the theory of plate tectonics in this guide for KS3 geography students aged 11-14 from BBC Bitesize. The plates are constantly moving over this weaker layer. The Splitting Earth. We're glad you found our Fair Trade Poster resource helpful. Save time and effort by focusing on exactly what you need to know to get . A short film for secondary schools explaining the various types of erosion and illustrating the dramatic effect the process has had on landscapes across the world. This Plate Tectonics Interactive Lesson Pack contains everything you need to teach a great geography class. This is called a constructive or divergent plate boundary. Mount Fuji, Japans most famous mountain is an active volcano. At a constructive boundary, the plates move apart, magma pushes up between the plates, solidifies and so new material is added to the plates. Learn more about planet earth's outer shell!Dont miss any uploads! The outer core is also made of iron and nickel but in liquid form. If you want to use the BBC bitesize website for extra maths lessons please do. The forces required to move continents are huge. Thank you for your review! This is . This is called a destructive or convergent plate boundary. % The tectonic plates are made up of cooler rigid rocks of the crust and upper mantle. <>/Metadata 267 0 R/ViewerPreferences 268 0 R>> Week 9 - Maths. Plate tectonics. They range from the Kamchatka peninsula in Russia through the islands of Japan, South East Asia and then into New Zealand. The plates are forced underneath each other. When two plates meet head-on, you get a destructive boundary. endobj For unlimited access to all quizzes, games and more, you'll need to subscribe. English as an additional language. You can view your wishlist by creating account or logging-in an existing account. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 12 0 R 13 0 R 19 0 R 20 0 R 21 0 R 22 0 R] /MediaBox[ 0 0 841.92 595.2] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The Mid-Atlantic Ridge on the floor of the Atlantic Ocean, where the Eurasian and North American Plates are moving apart, is the perfect example of this. A supervolcano eruption: would have no effect on the Earth - all the material would be blasted out into space because the volcano is so powerful, would affect only the area around Yellowstone Park, It is very possible that a supervolcano eruption would cause global climate change as the dust and gases would block the heat from the sun. There are no volcanoes of any type created by this type of plate movement but there are earthquakes, including some really big ones. Even more amazing & time saving is having all of the resources so it can be a pick-up & teach plan. Tectonic plates quiz Wordsearch. Under the plates is a weaker layer of partially melted rock. h># VLh"Ic_X"k7C7yReF?P(- %IBQlgpa3Y=1Lh_R.Cl}sy-eNN#_2`w4.;NRM/^6dLD%0m?>XdvzS?bg8;Y VSRf6z #Y)Vrk*BMLZ='U%t8#A~p aVm'VJ0BCb~I,D8fp!^gn+M p7Al:6Yoq8H,[,EN|DS'lll$HD6QlC_)7C+Fv6)&i:%wAjH k. Blog Home Uncategorized bbc bitesize tectonic plates ks2. volcanoes and the making of scotland oxfam s online shop. Use this Interactive Plate Tectonics Lesson Pack to help your . Image: Tectonic plate boundaries - Jose F. Vigil. The tricky part of this question is that you associate both composite volcanoes and earthquakes with this type of plate boundary but it is earthquakes that are formed when rocks move in this way, not volcanoes. 80% of the world's earthquakes occur in this area. Destructive Boundary (as crustal material can be melted here). All of Earth's land and water sit on these plates. Where plates meet, we say there is a plate boundary. The theory, or idea, of plate tectonics says that Earth 's outer layer is made up of large, moving pieces called plates. Learn how the tectonic plates move. It illustrates the plate boundaries of the Earth, how these are constantly moving, and how earthquakes occur wh. Some plates are comparable in size to the size of a small country whilst others are several times larger than any continent. This video investigates the features of constructive, destructive and transformational plate boundaries and provides a starting point for students to find ou. Year 6 Tectonic Plates Labelled diagram. May 20, 2021; tapioca starch whole30; barient 32 self tailing winch parts . 4 0 obj Under this layer, in the uppermost part of the mantle, churning convection currents of heat act as . And like an eggshell, the crust has cracked and split into many different pieces called tectonic plates. After watching the film, students could develop case studies about locations where the three types of plate boundary are found. Draw a diagram to help your explanation. Make sure that you know the different layers of the Earth. These plates can be oceanic, meaning they're found mainly under the ocean, or continental, and mainly found under land. In the main article we finished off by looking at this map. Find out more with this year 5/6 Bitesize KS2 Geography guide. }wo4s`]G} 2s%lfA-u^S(Z5q/ fedora hats los angeles;. Volcanoes occur at ALL types of plate boundary, Plates slide sideways past each other so there is no melting of rocks or gaps through which molten magma can squeeze up from below, areas where moving plates are temporarily stuck together, This happens at differing depths. Plates - pieces of Earth's crust that fit together like jigsaw pieces. 2. This Top 10 Fascinating Volcano Facts for Kids blog is sure to make you popular with the little ones as you teach this subject. %PDF-1.7 Good Luck! <> It can be used to explain what causes tectonic plates to move, the impact of moving plates and how the different kinds of plate movements have different impacts. Learn about and revise plate margins with GCSE Bitesize Geography (AQA). May cause a lot of damage in very populated areas. Da Vinci Kidshttps://www.youtube.com/c/DaVinciTV Image:EurasianPlate - Alataristarion Wikimedia Commons under Creative Commons Attribution-Share Alike 4.0International, Image: Motion of Nubia Plate - Rollingfrenzy Wikimedia Commons under Creative Commons Attribution-Share Alike 4.0International. This Tectonic Plate Jigsaw Puzzle Activity contains an illustration of the world map, including the names of the continents and the continental plates, that can be easily printed on A4 paper. It was once believed that convection currents in the mantle slowly moved the crust around. Earth's crust is like a puzzle of gigantic rocky floats that collide and sheer off constantly, forming mountains and causing earthquakes. pptx, 10.09 MB. 1 0 obj A vocabulary page and topic title page are also included. The sediments lying on the plates are crumpled up to form mountain ranges. Computing. Cloud Tea Monkeys planning is detailed yet to the point. This informative Tectonic Plates KS2 Poster will help your class to identify the location of the different sections that make up the outer layer of the Earth. Below this the lower mantle rocks are hot enough that they can flow. . Tectonic Plates KS2 Poster. A German meteorologist, Alfred Wegener, suggested that the continents may not have always been in the same place as we see them today. The highest mountain ranges are created by tectonic plates pushing together and forcing the ground up where they meet. Copyright 2023 Mocomi & Anibrain Digital Technologies Pvt. A German meteorologist, Alfred Wegener, suggested that the continents may not have always been in the same place as we see them today.