Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

44 Cards in this Set

  • Front
  • Back

Which of the following is considered a high-level cloud?


Which of the following is considered a mid-level cloud?


Cooling air becomes saturated at a temperature called the __?__.

dew point

What type of drought occurs when precipitation cannot supply enough moisture to the ground to support an area's crops?

agricultural drought

Which type of drought is based on water shortage's effect on people?

socioeconomic drought

Which type of cloud forms a flat, gray layer of heavy clouds not far above the ground?


Which type of front forms when a warm air mass moves into a region occupied by a cold air mass?

warm front

Which type of front forms a Y shape?

occluded front

Precipitation made of ice crystals that fall to the ground is called __?__.


Which type of air mass brings cool, wet weather?

maritime polar

Which type of air mass brings warm, moist weather?

maritime tropical

The process of liquid becoming a gas is __?__.


When the temperature of air rises, relative humidity will __?__.


The year-round atmospheric conditions typical of a certain place are its __?__.


The movement of water from the earth's surface, into the air, and back to the surface is the __?__ cycle.


An almond-shaped cloud is a __?__.

lenticular cloud

An __?__ air mass brings very cold and dry weather.


A low that forms along a front is called a __?__.

frontal cyclone

Which type of front forms when two air masses push against each other but neither advances?

stationary (front)

What is a mixture of smoke and fog called?


What is the amount of water vapor in the air called?


What phenomenon occurs when an area receives an abnormally low amount of precipitation over a long period?


What is rain that freezes before it hits the gound?


What is the study of weather and of the atmospheric conditions that produce weather?


What phenomenon occurs when air mass remains stationary over a region for a long time?

air-mass weather

List the three factors that affect the density of an air mass.

temperature, humidity, and pressure

A substance going from a solid to a liquid is __?__.


Water vapor in the air that touches the ground and turns to ice is __?__.


Water vapor in the air that touches the cooler ground and turns to a liquid is __?__.


Ice crystals in clouds that grow large enough to fall to the ground are __?__.


Layered balls of ice are called __?__.


White, billowy clouds that resemble piles of cotton puffs are __?__.


What type of fog is found along the slopes of mountains?

upslope fog

Drops of liquid water that have a diameter of 0.5 millimeter or greater and fall from the clouds to Earth are called __?__.


Snowflakes with white, feathery branches forming a leaf-or star-shaped pattern are __?__.


Air that is completely full of water vapor and can hold no more is considered __?__.


The most frequent type of cloud is the __?__.


Which of the following statements is true?

All of the above.

The ratio comparing the actual humidity to the humidity of saturated air under the same conditions is __?__.

relative humidity

A large body of air with relatively uniform properties is a(n) __?__.

air mass

Airborne water vapor cannot turn into liquid without a small particle called a(n) __?__.

condensation nucleus

The three major factors that determine the earth's weather are __?__,__?__, and __?__.

heat energy, uneven distribution of heat energy, and water vapor

A thick, brownish haze that results from complex molecules released into the air by vehicles and some factories and plants is __?__.

photochemical smog

ESSAY: List and explain the two processes that form rain.

Answers should include the following ideas:

In the Bergeron process (or cold-cloud process), water vapor in portions of a cloud below freezing nuclei. The ice crystals absorb water vapor from the cloud and stick to each other, growing large enough to be snowflakes. The snowflakes fall through the cloud, melting in warmer air near the ground to form rain.

In the collision-coalescence process, larger-than-normal condensation nuclei in regions of the cloud above freezing cause the formation of "giant" cloud droplets, which grow larger by colliding with smaller droplets. When they become too big to remain suspended in the air, the droplets fall to the earth as rain.