The Atmosphere

The composition of the atmosphere is mostly...

• Hydrogen

• Oxygen

• Nitrogen

• Helium

The main factor that raises the rate of global warming is...

• Ozone and Oxygen

• Carbon Dioxide and Hydrogen

• Carbon Dioxide

• Carbon Dioxide and Dihydrogen Oxide

What is the weather in an environment over a short period of time called?

• Climate

• Environment

• Weather

• Atmosphere

78% of the Earth's atmosphere is ___________ and 21% of the Earth's atmosphere is _____________.

• Oxygen, Nitrogen

• Nitrogen, Oxygen

• Nitrogen, Carbon Dioxide

• Oxygen, Carbon Dioxide

In what layer of the atmosphere do all weather events occur?

• Stratosphere

• Exosphere

• Mesosphere

• Troposphere

In the troposphere, the temperature _____ as altitude increases.

• Increases

• Decreases

• Stays the same

• Goes up and down

As altitude increases, air pressure....

• Increases

• Decreases

• Stays the same

• Goes up and down

The ozone layer is a sublayer of the ________ layer.

• Troposphere

• Stratosphere

• Exosphere

• Mesosphere

Why is the ozone layer vital to life on Earth?

• Planes fly in the ozone layer

• It is made up of oxygen (O₂)

• It shields the Earth from ultraviolet (UV) rays from the sun

• It causes clouds to be created

This layer is the hottest layer of the atmosphere?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere