Elements of Weather
Weather Fronts #1
Weather Fronts #2
Air Pressure #1
Air Pressure #2
Mixed
200

What is the condition of Earth’s atmosphere at a certain time and place?

Weather

200

What is a front?

the boundary between two air masses

200

What direction do the fronts move in?

In the direction the symbol is pointing.

200

What causes wind?

When  a high pressure system goes to a low pressure system. The greater the difference, the stronger the wind. 

200

In what direction does air exert pressure?

Everywhere
200

How is a high pressure system formed?

cool air sinks

400

What is the measure of how hot or cold something is?

Temperature

400

How does a cold front form?

When a cold air mass pushes under a warm air mass, forcing the warm air mass to rise.

400

What kind of front involves 3 different air masses?

Occluded Front

400
What kind of weather does a low pressure system bring?

cold, cloudy, rainy

400

In high pressure the molecules....

are pushed down making them more dense. 

400

What is created by a difference in air pressure?

Wind

600

What is the amount of water vapor in the air?

Humidity

600

What symbol is used to represent a stationary front?

line with triangles and half circles.

600

Are air masses that form over land dry or moist?

Dry

600

What is the force of the atmosphere on the surface of the earth?

Air pressure

600

What causes difference of air pressure around earth?

warm air rises, cold air sinks

600

What does the H represent on a map and how does the wind move?

  High pressure. In our area, High pressure and clockwise Low pressure is counter clockwise. ( L)

800

What forms when water vapor condenses in the atmosphere?

Clouds

800

What kind of weather does a cold front bring?

Strong winds and heavy rain.

800

What kind of weather is associated with a cold front?

Thunderstorms

800

What happens when air is warmed or heated by the sun?

It rises

800

If a high pressure system is moving in, what kind of weather would you expect?

sunny, warm

800

What do red semi circles represent on a weather map?

Warm front

1000

What is used to measure air pressure?

Barometer

1000

How does a stationary front form?

When warm air mass and cold air mass are moving in opposite directions along a border.

1000

Along a front, which air is forced upwards?

Warmer, less dense air

1000

What causes a low pressure system?

warm air rises and condenses as it cools

1000

Where do areas of high pressure go?

to areas of low pressure.

1000

If the sky appears green and gray what is approaching?

Tornado