Geology Unit

The study of the makeup of the earth and the processes that change and shape it is called _____.

• archaeology

• geology

• ecology

• geography

Which statement best explains the theory of plate tectonics?

• Earth's tectonic plates have been slowly moving and interacting for billions of years.

• Earth's tectonic plates are far apart and are fixed in place.

• Earth's tectonic plates are far apart but are slowly moving closer to one another.

• Earth's tectonic plates fit tightly together and are fixed in place.

Which of the following tells Earth's layers in the correct order, starting at the center?

• crust, mantle, outer core, inner core

• inner core, mantle, crust, outer core

• inner core, outer core, mantle, crust

• mantle, crust, outer core, inner core

This layer of the Earth is the largest and thickest layer. It consists of very hot, very dense molten rock.

• mantle

• inner core

• outer core

• crust

This layer of the Earth is solid and made of very hot metal. It may be nearly as hot as the sun's surface.

• mantle

• inner core

• outer core

• crust

This layer of the Earth is thin and rocky. It is the outermost layer.

• mantle

• inner core

• outer core

• crust

True or False? Tsunamis form when earthquakes occur in oceanic crust, causing the seafloor to shift.

• true

• false

True or false? Tsunamis travel fast - as much as 500 miles per hour.

• true

• false

True or false? Tsunamis are easy to stop as long as scientists have enough warning when they begin to form.

• true

• false

This type of volcano has not erupted for a least 10,000 years and is not likely to ever erupt again.

• extinct

• active

• dormant