Atmosphere and Weather

Which of the following statements is true about our atmosphere?

• As you go higher in the atmosphere, air pressure and density increase.

• As you go higher in the atmosphere, air pressure and density decrease.

• As you go higher in the atmosphere, the temperature doesn't change.

• As you go higher in the atmosphere, air molecules are increasing.

Warm air rises above cooler air. This is an example of:

• conduction

• radiation

• condensation

• convection

This picture shows a simple model of the ____________________

• Layers of the atmosphere

• Thermohaline current

• Water cycle

• Coriolis effect

When a low pressure system begins swirling over warm water near the equator, a _________________ may develop.

• thunderstorm

• tornado

• blizzard

• hurricane

What kind of weather is usually found at areas of high pressure?

• thunderstorms

• tornadoes

• blizzards

• fair weather

Which type of front forms when cold air runs into a mass of warm air, causing the warm air to rise quickly?

• Stationary front

• Occluded front

• Warm front

• Cold front

Which molecule in the atmosphere is responsible for blocking harmful UV radiation from the sun?

• ozone

• methane

• carbon dioxide

• nitrogen

Within which atmospheric layer do most weather events occur?

• the stratosphere

• the thermosphere

• the exosphere

• the troposphere

What is the effect of the unequal heating of Earth's surface?

• wind

• ocean tides

• greenhouse effect

• the Coriolis effect

What is the percentage of oxygen in Earth's atmosphere?

• 1%
• 21%
• 78%
• 90%