Exam 25: Driving Forces of Weather

On a weather map, an L depicts an area of low pressure. In this region, if the isobars are closely spaced around the low, the weather forecast calls for

High clouds have the prefix:

All of Earth's weather occurs in the

Why does a drop in air pressure indicate the coming of cloudy weather and a rise in air pressure indicate clear weather?

When warm air is above cooler air it is called

In order to produce precipitation, an air mass must rise because rising air

Briefly describe how thunder and lightning develop.

As air temperature decreases, relative humidity

As an air parcel moves up the side of a mountain, it

Does Earth's surface significantly influence the flow of air above it?

When a cold air mass moves into a region occupied by a warm air mass, the contact zone is called

On a weather map we see an H for Highs and an L for Lows. In a high pressure region we generally can find

Cloud types associated with stable air include

The fundamental source of energy released by a tropical hurricane comes from

In order for clouds to form, air must be lifted. The three principal lifting mechanisms are

The wind blows in response to

Lightning occurs as water droplets in a cloud become electrically charged. Energy is positively charged

Warm humid air is characteristic of a

As air temperature decreases, relative humidity

Hurricanes are more likely to form near