Study Guide on Continental Drift and Magnetosphere

Which of the following Earth layers has the greatest density?

• Crust

• Mantle

• Inner Core

• Outer Core

Where is the Earth's magnetic field thought to be generated?

• Crust

• Mantle

• Core

The crust, the mantle, and the core are structures of Earth. Which description is a feature of Earth's mantle?

• Contains fossil remains

• Contains the tectonic plates

• Is the only fully liquid layer of the Earth

• Contains most of Earth's mass

Without Earth's magnetic field,__________________________.

• Compasses would not work

• Life would be exposed to ultraviolet radiation

• Solar wind would strip away the atmosphere

• All of the above

Look at the picture above. Which numbered part represents the mantle?

• 1

• 2

• 3

• 4

Earth's core is made of...

• Rock

• Iron and nickel

• Iron and steel

• Steel and nickel

Which method is best for studying the composition of Earth's core?

• Taking samples from an underwater cave.

• Drilling holes to the core for samples.

• Studying index fossils found on the sea floor.

• Studying earthquake waves.

Tags

NGSS.HS-ESS2-3

Scientists know that the reason the magnetic field flips is that...

• Convection becomes chaotic and reverse direction.

• An asteroid impact disrupts motions in the core.

• Excess volcanism causes chaos in the mantle.

• None of these; scientists do now know why this happens.

Tags

NGSS.HS-ESS2-3

Electromagnets can be created by wrapping a wire around iron (usually a nail) and running _____ through the wire.

• Heat

• Water

• Energy

• None of the above

Tags

NGSS.MS-PS2-3

The mantle is the thinnest layer of the Earth.

• True

• False