Atmosphere and Air Circulation

What is air pressure?

• The force exerted by the weight of air molecules on a surface.

• The movement of air from high to low pressure areas.

• The temperature difference between hot and cold air.

• The speed at which air molecules move.

What happens to warm air compared to cool air?

• Warm air is more dense and sinks.

• Warm air is less dense and rises.

• Warm air is less dense and sinks.

• Warm air is more dense and rises.

What is a convection cell?

• A type of air pressure system.

• A pattern of air movement in an enclosed space.

• A method of measuring air density.

• A type of weather phenomenon.

Which air currents impact rainfall, temperature, and seasonal weather patterns?

• Ocean currents

• Trade winds, westerlies, and jet streams

• Mountain breezes

• Valley winds

What causes high pressure at the surface in the atmosphere?

• A column of cool, dense air

• A column of warm, less dense air

• Rising air

• Low pressure regions

In which direction does air move in the atmosphere?

• From low-pressure to high-pressure regions

• From high-pressure to low-pressure regions

• From warm to cool regions

• From dense to less dense regions

What are the names of the three cells?

What are Hadley Cells and where are they found?

• Atmospheric circulation cells found between 0° and 30° latitude

• Ocean currents found between 30° and 60° latitude

• Mountain ranges found between 0° and 30° latitude

• River systems found between 30° and 60° latitude

What causes the formation of Hadley Cells?

• Sunlight heating the equator, causing warm air to rise

• Ocean currents cooling the poles

• Mountain ranges blocking wind patterns

• River systems altering atmospheric pressure

What type of conditions do high-pressure systems created by Hadley Cells result in?

• Dry, clear conditions

• Wet, stormy conditions

• Cold, snowy conditions

• Humid, foggy conditions