Atmospheric pressure, wind and weather test practice

On a weather map, which symbol shows a type of front that causes cooler temperatures and heavy rains?

• 1

• 2

• 3

• 4

When air rises over the open ocean, a low pressure system is formed that might turn into a hurricane. Which factor increases the potential of a low pressure system developing into a hurricane in the Northern Hemisphere?

• cold air moving south from the north pole

• cool ocean currents moving towards the equator

• increased volcano activity on the continents

• warm water temperatures during summer months

What causes the wind to blow?

• Uneven heating of the atmosphere results in areas of High & Low pressure, causing wind to blow from HIGH to LOW pressure

• Humidity

• Uneven heating of the atmosphere results in areas of High & Low pressure, causing wind to blow from LOW to HIGH pressure

• Ocean currents

• Cold

• Stationary

• Occluded

• Warm

What is the ultimate driving force of wind?

• The sun

• The Earth's rotation

• The moon

• Tectonic plate shifting

In what direction does pressure move?

• From low to high

• From north to south

• From east to west

• From high to low

Aneroid barometers and mercury barometers are both used to measure what?

• Temperature

• Air pressure

• Density

• Moisture

The picture indicates warm waters being brought to South America. What event is occurring at this time?

• La Nina

• The Coriolis effect

• El Nino

• Drought conditions

Which of the following causes wind friction, altering the strength/direction of the wind?

• Trees

• Mountains

• Buildings

• All of these

Which winds blow east towards the poles, and start in the west?

• Trade Winds

• Prevailing Westerlies

• Polar Easterlies

• The Doldrums