1) From the centre of the earth, what is the correct order of layers? a) Outer Core, Inner Core, Crust, Mantle b) Inner Core, Mantle, Outer Core, Crust c) Crust, Mantle, Outer Core, Inner Core d) Inner Core, Outer Core, Mantle, Crust e) Outer Core, Lithosphere, Mantle, Crust 2) Which layer of the Earth is thinnest? a) Outer Core b) Lithosphere c) Mantle d) Crust 3) A tectonic plate is... a) a section of the Earth's crust that moves b) an area where volcanoes and earthquakes occur c) a source of renewable energy d) a continent that existed millions of years ago 4) How far do tectonic plates move typically each year? a) 2.5 mm b) 2.5 cm c) 2.5 m d) 2.5 km e) 2.5 miles 5) Scientists accept the theory of plate tectonics because... a) they have strong beliefs b) the idea is very new c) the idea fits will lots of evidence 6) When liquid rock is underground, it is called: a) the mantle b) magma c) lava d) brimstone 7) When lava cools down it makes a rock with small crystals because... a) it cools down quickly b) air gets into it c) it cools down slowly d) it has certain minerals in it 8) Granite is a rock with large crystals. Granite was formed: a) On the Earth's surface b) In the sea c) Underground 9) The quicker a crystal forms the bigger it will be. a) True b) False 10) Is it safer to live near... a) a volcano with thick lava b) a volcano with runny lava 11) People choose to live near volcanos because... a) they get an adrenaline rush b) the land is cheaper c) the views are stunning d) the land is fertile for crops 12) The lithosphere is... a) in the air b) a scientific word for the crust c) deep inside the Earth d) the crust and outer part of the mantle e) a tectonic plate 13) The crust does not sink into the liquid mantle because... a) it is less dense b) it is more dense c) the earth rotates d) we don't know 14) Scientists study seismic waves produced in earthquakes because... a) they are geeks b) to learn about the layers inside the earth c) they are too lazy to dig down and find out where they come from 15) When two plates collide and one is pushed under the other, this is called... a) divergence b) earthquake c) volcano d) tectonic undulation e) subduction

Structure of the Earth

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