7th Sci. Ch. 6 test

The mantle is divided into the inner mantle and outer mantle.

• True
• False

The continental crust contains only igneous rock.

• True
• False

Earthquakes send waves of energy through rocks inside Earth

• True
• False

Compared with the other layers of Earth, the crust is very....

• thick

• warm

• brittle

• two of the above

Seismic waves reveal information about Earths interior because they travel....

• at different speeds through different materials

• only through liquids and gases

• at the same speed as sound

• only in straight lines

The continental crust is

• denser than the oceanic crusts

• thicker than the oceanic crust

• less dense than the oceanic crust

• thinner than the oceanic crust

Earths magnetic field is created by movements in Earth's....

• inner core

• outer core

• mantle

• crust

Bendable layer of Earth in the upper mantle that lies beneath the lithosphere

• asthenosphere

• inner core

• troposphere

• stratosphere

Earths outer layer

• lithosphere

• mantle

• crust

• asthenosphere

Brittle layer of Earth consisting of the crust and uppermost mantle

• lithosphere

• mantle

• inner core

• asthenosphere