What is the main topic of Lesson 1?

• Earth's Atmosphere

• Earth's Layers

• Earth's Oceans

• Earth's Mountains

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

What is the layer between the crust and the core called?

• Mantle

• Lithosphere

• Asthenosphere

• Mesosphere

If you were to describe an apple in terms of Earth's layers, how many layers would it have?

• One

• Two

• Three

• Four

What is the innermost layer of Earth called?

• Crust

• Mantle

• Core

• Surface

Which type of crust is denser?

• A) Continental

• B) Oceanic

• C) Both are the same

• D) None

Which layer contains more magnesium and less aluminum and silicon than the crust?

• Core

• Mantle

• Crust

• Oceanic crust

What makes up about one-third of Earth's mass?

• Crust

• Mantle

• Core

• Ocean

The oceanic crust has almost twice as much iron, calcium, and ____ as the continental crust.

• Magnesium

• Silicon

• Aluminum

• Oxygen

Which layer is described as a region of hot, slow-flowing, solid rock?

• Crust

• Mantle

• Core

• Oceanic crust

The core is thought to contain much less of which elements compared to the mantle?

• Oxygen, silicon, aluminum, and magnesium

• Iron and nickel

• Calcium and magnesium

• Silicon and aluminum