Introducing Earth

Which of the earth's layers is the thickest?

• the crust

• the mantle

• the outer core

• the inner core

Which part of the earth contains most of its mass?

• the biosphere

• the hydrosphere

• the atmosphere

• the geosphere

Which part of the earth contains plates?

• hydrosphere

• atmosphere

• core

• lithosphere

What is the correct order of the Earth's layers starting from the surface?

• crust, outer core, inner core, mantle

• mantle, outer inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, mantle, crust

Earth's inner core is...

• a dense ball of solid metal

• a layer of molten metal

• a layer of hot rock

• a dense ball of liquid

The heating of a pot of soup on the stove is an example of

• convection

• conduction

• radiation

• mass

The transfer of energy through empty space is called

• conduction

• convection

• radiation

• subduction

Using data from seismic waves, geologists have learned that Earth's interior is made up of several

• continents

• layers

• ridges

• trenches

In the mantle, heat is transferred as soft rock flows slowly in cycles known as

• convection currents

• lava

• radiation

• milky way

When you touch a hot plate, the transfer of heat from the plate to your hand is called

• radiation

• conduction

• current

• plates