Atmosphere

The atmosphere is a blanket of ____ that surrounds the Earth.

There is NO boundary between the atmosphere and outer space.

• True

• False

The atmosphere has ______ number of layers.

The layer of air that surrounds the Earth is known as:

• Blanket of Gas

• Atmosphere

• I'm not sure

• NONE

Which of the gas is not a component of air:

• Oxygen

• Nitrogen

• CO2

• Chlorine

________ makes up 21% of the Atmosphere?

________ makes up 78% of the Atmosphere.

The major source of oxygen for the Earth's Atmosphere are

• Plants

• Animals

• Humans

• Birds

Which is the most abundant gas in the Atmosphere?

• Nitrogen

• Oxygen

• CO2

• Argon

How many layers of Atmosphere are there?