Clouds and Precipitation

What are visible masses of tiny water droplets or ice particles suspended in the atmosphere?

• Rain
• Snow
• Water Vapor
• Clouds

When air reaches a level where its temperature is ___________ than the ___________ condensation occurs to form a cloud.

• higher, cloud temperature
• higher, dew point
• lower, cloud temperature
• lower, dew point

What is needed to form a cloud?

• Water vapor, and warm temperatures
• Water vapor, and cool temperatures
• Water vapor, cool temperatures and condensation nuclei.
• Water vapor, warm temperatures and condensation nuclei.

This is when air is forced up by mountains

• orographic lifting
• frontal wedging
• convergence
• localized convection

This is when cool air acts as a barrier over which warmer, less dense air rises.

• localized convection
• convergence
• frontal wedging
• orographic lifitng

This happens as two air masses of the same density collide. They cannot go down, so they are forced up.

• convergence
• orographic lifting
• localized convection
• frontal wedging

This is causes air to rise by unequal heating of the Earth, it causes differences in density.

• orographic lifting
• frontal wedging
• convergence
• localized convection

If an air mass does not rise it is _______.

• Stable
• Unstable

Clouds are classified by their ________ and __________.

• temperature, color
• temperature, height
• color, form
• form, height

Which of the following is a high cloud?

• Cirrostratus
• Altostratus
• Nimbostratus
• Stratus