This gas makes up 21% of the atmosphere

• ozone
• oxygen
• nitrogen
• water vapor

This gas makes up 78% of the atmosphere

• oxygen
• nitrogen
• ozone
• carbon dioxide

A lava lamp with putty which heats, flows to the top, cools, then flows to the bottom is an example of:

• conduction
• convection
• radiation

Which of the following is the correct order of the atmosphere layers from Earth to space?

• troposphere, stratosphere, mesosphere, ionosphere, exosphere
• troposphere, mesosphere, thermosphere, exosphere, ionosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, exosphere, thermosphere

Where weather occurs.

• stratosphere
• thermosphere
• troposphere
• mesosphere

Where you will find the ozone layer.

• stratosphere
• thermosphere
• exosphere
• mesosphere

The most common gas in the atmosphere.

• Nitrogen
• Oxygen
• Carbon Dioxide
• Trace gases

What happens to the density of the air as you increase in altitude?

• density increases
• density decreases
• density stays the same
• density disappears

What season is letter A?

• Winter
• Summer
• Spring
• Fall

When the Northern Hemisphere is pointing towards the sun, what season is the Southern Hemisphere?

• Winter
• Spring
• Fall
• Summer