Earth Review

Which sphere of the Earth system includes trees, grasses, and squirrels?

• atmosphere

• biosphere

• geosphere

• hydrosphere

The rocks that make up Earth are part of which sphere?

• atmosphere

• biosphere

• geosphere

• hydrosphere

The ___ includes gases like nitrogen and oxygen, as well as dust, rain, and cloud droplets.

• atmosphere

• biosphere

• geosphere

• hydrosphere

The hydrosphere contains all of Earth's ___.

• water

• rocks

• life

• gasses

In which layer of Earth is the asthenosphere located?

• inner core

• mantle

• outer core

• crust

Which lists the main layers of Earth in order from outermost to innermost?

• lithosphere, asthenosphere, mesosphere

• core, mantle, crust

• crust, mantle, core

• mantle, core, crust

Which best describes the mantle?

• molten metal

• dense, solid metal ball

• hot but plastic rock

• dry land and ocean floor

What do geologists call the crust and uppermost mantle?

• lithosphere

• asthenosphere

• mesosphere

• outer core

Earth's core is mostly made up of iron and magnesium.

• True

• False; nickel

Scientists think that movements in the liquid inner core create Earth's magnetic field.

• True

• False; outer core