Earth's Layers

The thinnest layer of Earth’s four major layers is the ______.

• crust

• inner core

• mantle

• outer core

The hottest of the Earth’s layers is the

• crust

• inner core

• mantle

• outer core

From which of earth’s layers does the magnetic field come from?

• Inner core

• Outer core

• Mantle

• Crust

You would find the most volcanoes and earthquakes

• at the boundaries of tectonic plates

• everywhere

• in the middle of tectonic plates

• in the inner core

Tectonic plates are composed of which of the following? Select all that apply.

• Outer core

• Inner core

• Lower mantle

• Crust

• Upper mantle

Scientists get most of their evidence about the earth’s interior by analyzing which of the following?

• Light waves

• Ocean waves

• Seismic waves

• Sound waves

Which layer is a part of the crust and uppermost mantle?

• Inner core

• Mesosphere

• Asthenosphere

• Lithosphere

Which layer is in between the uppermost mantle and the upper mantle?

• Lithosphere

• Inner core

• Mesosphere

• Asthenosphere

Melting rock can be changed into solid rock by _______ pressure and ________ temperature.

• decreasing, decreasing

• increasing, decreasing

• decreasing, increasing

• increasing, increasing

Which of the following move and crash into each other which causes earthquakes and volcanic eruptions?

• Primary and Secondary Waves

• Mountains

• Convection Currents

• Ocean water