U9L1 Layers of the Earth NOTES 🌍🌑

Multiple Choice

Which of the following statements best describes the continental crust when compared to oceanic crust?

• It is solid, less dense, and made of lighter colored rocks.

• It is solid, more dense, and made of darker colored rocks.

• It is the most dense layer of the Earth.

• It is where the Earth's core is located.

Multiple Choice

Which layers of the Earth make up the lithosphere?

• Crust and uppermost solid mantle

• Asthenosphere and lower mantle

• Outer core and inner core

• Crust and core

Multiple Choice

Which of the following statements about the Earth's core is correct?

• The outer core is liquid and creates Earth's magnetic field.

• The inner core is liquid and creates Earth's magnetic field.

• The core is made entirely of solid rock.

• The core is the least dense part of the Earth.

Fill in the Blanks

The mantle consists mostly of

silicates.

Multiple Select

Select all the correct statements about convection currents in the Earth's mantle.

• They are caused by heat from the core.

• They move the lithosphere plates.

• They only occur in the core.

• They cause the crust to split, come together, or slide past one another.

Multiple Choice

What are the two main types of Earth's crust, and how do they differ in terms of density and composition?

• Continental and Oceanic; Continental is less dense and made of lighter colored rocks, Oceanic is more dense and made of darker colored rocks

• Mantle and Core; Mantle is less dense and made of lighter colored rocks, Core is more dense and made of darker colored rocks

• Continental and Mantle; Continental is more dense and made of darker colored rocks, Mantle is less dense and made of lighter colored rocks

• Oceanic and Core; Oceanic is less dense and made of lighter colored rocks, Core is more dense and made of darker colored rocks

Multiple Choice

What is the primary cause of the movement of Earth's crustal plates as shown in the map?

• Convection currents in the mantle

• Wind currents in the atmosphere

• Ocean currents

• Solar radiation