Exam 19: Moisture, Clouds, and Weather

Warm and dry air is regarded as unstable.

The rate at which air that is neither rising nor falling cools with elevation is called the ____ lapse rate.

What are isobars?

Define relative humidity.

Wind speed is determined by the magnitude of the pressure difference over distance.

____________________ occur in high-pressure regions with outward spiraling surface winds.

In many clouds, water vapor initially forms ice crystals rather than condensing as tiny droplets of supercooled water.

What is the difference between humidity and absolute humidity?

Which condition is likely to lead to rain?

The air's temperature during an adiabatic change will ____.

Which process would lower the relative humidity of a parcel of air?

In an El Niño year, the trade winds will ____.

In the Southern Hemisphere, the Coriolis effect deflects wind to the right and creates a clock-wise spiral.

Water vapor in supersaturated air does not freeze because the air is ____.

Evaporation fog is common in ____.

During an El Niño year the moisture from the equatorial Pacific Ocean causes unusual amounts of rain to fall in ____.

Describe stratocumulus, cumulonimbus, nimbostratus, and altostratus.

What are the three mechanisms that cause air to rise?

Wind near Earth's surface always flows from high-pressure toward low-pressure regions.

A process called ____________________ occurs when a moving mass of cool, dense air slides under a warm air mass and forces the warm air upward.