Structure of the Earth

Which sphere contains all living things?

• lithosphere

• hydrosphere

• biosphere

• atmosphere

The Inner core is mostly made up of

• Iron

• Copper

• Calcium

• Hydrogen

The Mantle is

• Molten Rock

• Almost 3000km thick

• Between 500 and 2000 degrees celsius

• All of the above

Which is the thinnest layer of Earth?

• crust

• mantle

• outer core

• inner core

Which of the following describes all water on earth?

• biosphere

• hydrosphere

• atmosphere

• lithosphere

Which layer is directly below earth's crust?

• outer core

• inner core

• mantle

The core of the earth is hotter than the surface of the sun

• true

• false

Volcanoes are formed when magma from the ________ bursts through the earth's crust

• mantle, core

• core, mantle

• core, crust

• mantle, crust

Molten rock below the earth's surface is called

• magma

• lava

• crust

The inner core is made up of

• molten rock

• molten metal

• solid metal