2 Pressure and wind

Multiple Choice

What is the weight of air at sea level?

• 14.7 lbs/in

• 10.5 lbs/in

• 20 lbs/in

• 5 lbs/in

Multiple Choice

What factors affect air pressure?

• Temperature

• Altitude

• Water vapor

• All of the above

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How does temperature affect air pressure?

As temperature increases, air expands causing density and pressure to

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What happens to pressure as we go up in altitude?

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As altitude increases, atmospheric pressure

Multiple Choice

How does moisture affect air pressure?

• Moisture increases air pressure.
• Moisture has no effect on air pressure.
• Moisture stabilizes air pressure.
• Moisture decreases air pressure.

Multiple Choice

What is the primary purpose of a barometer?

• To measure temperature

• To measure pressure

• To measure humidity

• To measure wind speed

Multiple Choice

Which units are used to measure barometric pressure?

• Inches or millibars

• Pascals or newtons

• Liters or gallons

• Meters or kilometers

Multiple Choice

What causes wind speed?

• Differences in air pressure due to uneven heating of the Earth's surface.
• The presence of mountains and valleys.
• The rotation of the Earth on its axis.
• High humidity levels in the atmosphere.

Multiple Choice

What is the relationship between pressure and wind speed?

• Wind speed is unaffected by pressure differences.
• Wind speed is directly related to the pressure difference; greater pressure differences result in higher wind speeds.
• Higher pressure always leads to lower wind speeds.
• Wind speed decreases as pressure differences increase.

Multiple Choice

The pressure in Albany, NY is 982.4 mb. The pressure in Cambridge, NY is 1083.5 mb. The distance between the two is 40 miles. What is the gradient?

• Change in fv/distance

• 1083.5mb – 982.4mb/40mi

• 101.1mb/40mi

• 2.5mb/mi

Multiple Choice

What is the purpose of an anemometer?

• Measures wind speed

• Measures wind direction

• Measures temperature

• Measures humidity

Multiple Choice

What is the relationship between knots and miles per hour?

• 1 knot is equal to 1.5 miles per hour.

• 1 knot is approximately 1.15078 miles per hour.
• 1 knot is approximately 2 miles per hour.
• 1 knot is equal to 0.5 miles per hour.

Multiple Choice

How are winds named?

• Named from the direction from which it comes
• Named from the direction from which it blowing

• Named from the direction from which it feels like

• Named from the direction from which it wants to go

Multiple Choice

How do winds affect the formation of waves on surface water.

• Winds cool the water surface, preventing wave formation.
• Winds only affect underwater currents, not surface waves.
• Winds create waves by pushing water downwards into the ocean.
• Winds affect wave formation by transferring energy to the water surface, creating ripples that develop into waves.

Multiple Choice

What is the Coriolis force effect and how does it influence air pressure systems in the Northern Hemisphere?

• The Coriolis force causes air to rotate counterclockwise around low-pressure systems and clockwise around high-pressure systems in the Northern Hemisphere.
• The Coriolis force has no effect on air pressure systems in the Northern Hemisphere.
• The Coriolis force causes air to rotate clockwise around low-pressure systems and counterclockwise around high-pressure systems.
• The Coriolis force causes air to move in a straight line in the Northern Hemisphere.

Fill in the Blanks

In a convection cell, warm air ___ and cold air ___.