Layers of the Earth

Multiple Choice

Which layer of the Earth is the thinnest and is made up of large amounts of silicon and aluminum?

• Mantle

• Crust

• Core

• Outer Core

Fill in the Blank

Where is the Crust located?

Multiple Choice

Which of the following statements best describes the Earth's mantle?

• It is the outermost layer and is less than 1% of Earth's mass.

• It is the thickest layer, making up 67% of Earth's mass.

• It is the innermost layer and has a diameter of 6,856 km.

• It is made entirely of liquid water.

Fill in the Blank

The hot material in the mantle rises to the top, cools, sinks, reheats, and rises again. This process is called ___ currents.

Multiple Choice

Which of the following statements about the mantle is correct?

• It is the thinnest layer of the Earth.

• It is composed mainly of silicon and aluminum.

• It is solid but capable of flow and makes up 70% of the Earth's mass.

• It is found above the crust.

Fill in the Blank

The Earth's outer core is composed mainly of melted metals such as nickel and ___.

Multiple Choice

Which of the following best describes the composition of the Earth's outer core?

• Molten metals, mainly nickel and iron

• Solid iron sphere

• Molten rock and gases

• Solid rock and minerals

Multiple Select

Select all statements that are true about the Earth's inner core.

• It is composed mostly of iron.

• It is hotter than the outer core.

• It is a solid sphere.

• It is made of molten metals.

Multiple Choice

What is the primary reason the inner core remains solid despite its extremely high temperature?

• Pressure from surrounding layers

• Lower temperature than the outer core

• Presence of water

• Magnetic field

Fill in the Blank

If the inner core is hotter than the outer core, then why is the inner core solid and the outer core liquid?

Multiple Choice

Which of the following is NOT one of Earth's five physical layers?

• Lithosphere

• Asthenosphere

• Hydrosphere

• Inner core

Fill in the Blank

The Lithosphere is made crust and

Multiple Select

Which of the following statements about the asthenosphere are correct?

• It is made of solid rock that moves very slowly.

• It is located above the lithosphere.

• Tectonic plates move on top of it.

• It is part of the mantle.

Fill in the Blank

The asthenosphere is located directly below the ___.

Multiple Choice

Based on the diagram, which layer of the Earth is both solid and found at the center?

• Crust

• Mantle

• Outer core

• Inner core

Fill in the Blank

______ ______ in the mantle affect the movement of tectonic plates.

Open Ended

Explain the relationship between the lithosphere and tectonic plates.

Multiple Choice

Which of the following statements are true about the changes in Earth's layers as depth increases?

• Temperature increases and density decreases

• Temperature and pressure both increase

• Pressure decreases and temperature stays the same

• Density increases and temperature decreases

Multiple Select

Based on the summary, select all correct characteristics of the Earth's core.

• It is metallic

• It is less dense than the mantle

• It is at the center of the Earth

• It is part of the lithosphere

Fill in the Blank

Which layer has the highest temperature and pressure?

Fill in the Blank

The earth is layered with a lithosphere, convecting mantle, and a dense metallic ___.

Multiple Choice

What are the three main compositional layers of the Earth?

• Crust, Mantle, Core

• Crust, mantle , lithosphere

• Mantle, Crust, asthenosphere

• inner Core, outer core, crust