Earth's layers, atmosphere, quakes

The most unique characteristic of planet earth is

• its beautiful blue color.

• its ability to maintain various life forms.

• abundance of liquid water

• its complex atmospheres

The two most abundant gases in the atmosphere are

• carbon dioxide and oxygen

• carbon dioxide and nitrogen

• nitrogen and oxygen

• nitrogen and hydrogen

Earth's atmosphere is important to living things because it

• contains dust and other particles

• is very thin compared to the size of Earth

• provides all the gases that living things need to survive

• maintains a constant relative humidity

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The layers of the atmosphere are classified according to changes in

• altitude
• density
• pressure
• temperature

The layer in our atmosphere in which weather occurs is the

• troposphere

• stratosphere

• mesosphere

• exosphere

Tags

NGSS.MS-ESS2-5

The ozone layer protects living things on Earth from

• visible light

• UV radiation

• carbon dioxide

Tags

NGSS.MS-LS1-5

Which layer protects Earth from being hit by most meteors?

• troposphere

• stratosphere

• mesosphere

• thermosphere

Which layer is composed mostly of iron?

• Z

• Y

• V

• X

Which layer of Earth do scientists believe is most likely made of solid matter?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer of the Earth is the thinnest?

• Crust

• Mantle

• Outer core

• Inner core