What percentage of the Earth's atmosphere is composed of nitrogen?

• 10%

• 78%

• 21%

• 1%

At what altitude does the troposphere end?

• 60,000 feet

• 30,000 feet

• 160,000 feet

• 18,000 feet

What effect does the Earth's rotation have on air moving from the equator towards the poles?

• It slows down

• It speeds up

• It causes the air to turn right

• It has no effect

What is the primary cause of different weather patterns across the Earth?

• The moon's gravitational pull

• Ocean currents

• Earth's rotation

• Uneven heating of the Earth's surface

What is the Coriolis effect?

• A deflection of moving objects when viewed in a rotating reference frame

• A type of wind shear

• A weather prediction model

• A type of cloud

How does high pressure influence weather conditions?

• Leads to higher temperatures

• Increases humidity

• Results in clear skies

• Causes storms

What is a microburst?

• A sudden, powerful, localized air current

• A small tornado

• A slow-moving air mass

• A gentle rainfall

What does a close dew point and temperature spread indicate?

• Clear skies

• High winds

• Potential fog or low clouds

• Dry conditions

How can you calculate the cloud base height?

• Dew point minus temperature divided by 4.4

• Temperature minus dew point divided by 2.5

• Temperature minus dew point divided by 4.4

• Dew point minus temperature divided by 2.5

What role does humidity play in air stability?

• Increases stability

• Decreases stability

• Only affects visibility

• Has no effect on stability