Understanding Air Pressure and Wind

What is air pressure primarily defined as?

• The humidity level in the atmosphere

• The temperature difference between two locations

• The speed of wind at sea level

• The weight of the atmosphere pressing down on Earth's surface

Which instrument is used to measure air pressure?

• Thermometer

• Anemometer

• Barometer

• Hydrometer

Why do barometric pressure readings need to be adjusted for elevation?

• Because the atmosphere is denser at higher altitudes

• Because humidity is constant at all elevations

• Because temperature varies with elevation

• Because air pressure is higher at sea level

How does temperature affect air pressure?

• Warmer air increases air pressure

• Temperature has no effect on air pressure

• Cooler air decreases air pressure

• Warmer air decreases air pressure

What does a decrease in air pressure typically indicate about the weather?

• Clear and sunny skies

• Warmer, humid, and lighter air

• Cold and dry conditions

• No change in weather

What causes wind to blow from high-pressure areas to low-pressure areas?

• Temperature differences

• Humidity levels

• Air pressure differences

• Earth's rotation

What do closely spaced isobars on a weather map indicate?

• Weak winds

• Rapid change and stronger winds

• High humidity

• Stable weather conditions

What is the Coriolis effect?

• The effect of humidity on air pressure

• The tendency of moving objects to curve due to Earth's rotation

• The increase in air pressure with elevation

• The decrease in temperature with altitude

In which direction does the Coriolis effect cause winds to curve in the Northern Hemisphere?

• Upwards

• To the right

• To the left

• Straight ahead

What is a jet stream?

• A fast-moving wind at the top of the troposphere

• A slow-moving ocean current

• A type of barometer

• A weather pattern caused by humidity