Earth's Layers: Crust, Mantle, and Core

What is the outermost layer of the Earth?

• Mantle

• Core

• Crust

• Lithosphere

Name the two types of Earth's crust.

• Continental and Oceanic

• Mantle and Core

• Lithosphere and Asthenosphere

• Upper and Lower

The crust is made mostly of rocks like ______ (continental) and ______ (oceanic).

• granite, basalt

• limestone, shale

• sandstone, marble

• gabbro, pumice

How thick is the continental crust?

• 30–50 km thick

• 5–10 km thick

• 100–150 km thick

• 1–2 km thick

How thick is the oceanic crust?

• 5–10 km thick

• 20–40 km thick

• 50–70 km thick

• 100–150 km thick

What are tectonic plates?

• Tectonic plates are pieces of the Earth's crust that move around on the mantle.

• Tectonic plates are large bodies of water on Earth's surface.

• Tectonic plates are layers of the Earth's atmosphere.

• Tectonic plates are types of rocks found only in volcanoes.

Tags

NGSS.MS-ESS2-3

Tectonic plates cause features like mountains, valleys, and earthquakes.

• True

• False

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What happens when plates shift or get stuck, causing ground shaking?

• Earthquakes happen when plates shift or get stuck, causing ground shaking.

• Volcanoes erupt when plates shift or get stuck, causing ground shaking.

• Tsunamis always occur when plates shift or get stuck, causing ground shaking.

• Mountains instantly form when plates shift or get stuck, causing ground shaking.

Tags

NGSS.MS-ESS3-2

What forms when molten rock (magma) breaks through the crust?

• Volcanoes form when molten rock (magma) breaks through the crust.

• Mountains form when molten rock (magma) breaks through the crust.

• Rivers form when molten rock (magma) breaks through the crust.

• Canyons form when molten rock (magma) breaks through the crust.

Tags

NGSS.MS-ESS2-1

The oceanic crust forms the ocean floor, which supports ocean life.

• True

• False

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4