Composition of Earth

What are the 4 main layers of the Earth?

a

b

c

d

mantle

crust

inner core

outer core

Which layer of the Earth is the hottest?

Match the following spheres of the Earth with their correct definition:

• Blanket of gasses that surround Earth

• Atmosphere

• Solid portion of the Earth

• Hydrosphere

• Comprised of all the water on Earth

• Geosphere

• Portion of the Earth where life exists

• Biosphere

Tags

NGSS.MS-ESS2-4

Which layer of the earth has the lowest temperature?

• Crust
• Mantle
• Outer Core
• Inner Core

Which layer of the earth is under the highest pressure?

• Crust
• Mantle
• Outer Core
• Inner Core

What causes plate tectonics?

• Ocean waves caused by earthquakes

• moon's gravitational pull on Earth

• convection currents in the asthenosphere

• intense heat from the inner core

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NGSS.MS-ESS2-3

Why do continents look different today from how they looked 100 million years ago?

• Ocean waves reshaped the continents

• The continents have drifted apart

• Volcanoes have destroyed the continents

• Wind and waves have eroded the continents.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

How has magma pushing up through the crust changed the Atlantic ocean?

• It has made the ocean floor smooth.

• It has produced volcanoes.

• It has heated the water in the ocean.

• It has created a long mountain range.

Tags

NGSS.MS-ESS2-2

Where do most earthquakes and volcanoes occur?

• In the middle of a plate

• Along plate boundaries

• Along the equator

• At the north or south pole

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

Ho do active volcanoes create more land?

• Lava cools and hardens forming more land.

• Lava melts old rock and exposes more land.

• Volcanic heat causes ocean to evaporate.

• Volcanic heat causes minerals to condense into land.

Tags

NGSS.MS-ESS2-2