Objective #1

What are the two main gases in the atmosphere?

• Oxygen & Helium

• Oxygen & Methane

• Nitrogen Oxygen

• Nitrogen & Argon

Objective #2

How does nitrogen get back into the atmosphere?

• Photosynthesis

• The nitrogen cycle

• The oxygen & carbon cycle

• None of the above

Objective #2

The earth's atmosphere is........

• is very warm

• has no water in it

• is filled with minerals

• always around us

Objective #2

Define - Atmosphere

• Reminds us that there is moisture in the air.

• Where airplanes fly

• Layers of moisture that surround the ground

• Layers of gases that surround the earth

Objective #2

The earth's atmosphere is the only one that can sustain.....

• life

• water

• nitrogen

• oxygen

Objective #4

What are the layers of the atmosphere?

• Exosphere, ionosphere, troposphere, tiasphere.

• Ionosphere, mesosphere, stratosphere, exosphere.

• Troposphere, nitrosphere, mesosphere, stratosphere.

• Troposphere, stratosphere, mesosphere, ionosphere/exosphere.

What layer of the atmosphere do we live in?

• Troposphere

• Stratosphere

• Ionosphere

• Mesosphere

Objective #4

What layer of the atmosphere do airplanes fly in?

• Ionosphere

• Stratosphere

• Troposphere

• Mesosphere

Objective #4

Satellites fly in which layer of the atmosphere?

• Ionosphere

• Troposphere

• Mesosphere

• Stratosphere

Objective #4

What layer of the atmosphere is the ozone layer in?

• Ionosphere

• Mesosphere

• Stratosphere

• Troposphere