Unit 3 & 5 Preassessment

Select the incorrect statement:

• The two types of Earth's crust are oceanic and continental.
• Oceanic crust is more dense than continental crust.
• Continental crust is thinner than oceanic crust.
• Oceanic and continental crust is made up of rocks.

Plates of the lithosphere float on which plastic-like layer?

• Continental Crust
• Asthenosphere
• Lower Mantle
• Outer Core

The core is made of

• Basalt and granite
• Peridotite
• Gabbro and basalt
• Iron and nickel metal

In general, as depth increases, how does temperature and pressure change inside the Earth?

• Both temperature and pressure increase.
• Both temperature and pressure decrease.
• Temperature increases while pressure decreases.
• Temperature decreases while pressure increase.

True or False: Without Earth's magnetic field, complex life would probably not exist.

• True
• False

Earth has a magnetic field because it has a molten (liquid) __________.

• Inner Core
• Mantle
• Outer Core
• Crust

A type of current, where hotter rock rises and cooler rock sinks, inside Earth that drives plate motions.

• Deep ocean currents
• Convection currents
• Radio currents
• Electric currents

How did scientists study Earth's interior layers?

• They used advanced technology to dig through each layer until they hit the core.
• They used electrical currents to identify the material in each layer of Earth's interior.
• They used x-ray machines to determine the differences between each layer.
• They used seismic waves from earthquakes to learn about Earth's interior.

Who proposed the hypothesis of continental drift in 1911?

• Hess
• John
• Wegener
• Richter

What is the name of the supercontinent that existed about 200 million years ago?

• Pangaea
• Rodinia
• Gondwana
• Wakanda