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Study Guide Answers

1.     Earth's atmosphere is like a giant _____________________________ that surrounds the planet.
     bubble
2.     Earth's atmosphere is made up of a variety of ________________________.
     gases
3.     What are the five layers of Earth's atmosphere?
     the troposphere/ the stratosphere/ the mesosphere/ the thermosphere/ the exosphere
4.     In which layer of the atmosphere does weather occur?
     in the troposphere
5.     The "ozone layer" is in which part of the atmosphere?
     in the stratosphere
6.     What is weather?
     the changes that occur day to day within the atmosphere in a particular place
7.     What branch of science studies weather?
     meteorology
8.     People who study the weather are ______________________________.
     meteorologists
9.     "_______________________" refers to general conditions of the atmosphere in a certain place over a long period of time.
     Climate
10.     Weather in a particular climate generally fits into a(n) _________________________ pattern.
     predictable
11.     What does temperature measure?
     how hot or cold it is
12.     What are the two types of temperature scales?
     Fahrenheit and Celsius (Centigrade)
13.     The "______________________________________" is the temperature at which a liquid becomes a solid.
     freezing point
14.     What is the name of the instrument that measures the temperature of the atmosphere?
     a thermometer
15.     The level of humidity tells us how much ________________________ is in the air.
     moisture
16.     For what three reasons is humidity important?
     It regulates air temperature./ It helps to create storms./ It is the source of condensation.
17.     The collection of water on a surface that's produced from water vapor in the air is "____________________________________."
     condensation
18.     How are clouds formed?
     Water from the oceans evaporates and enters Earth's atmosphere.
19.     A cloud that's located on Earth's surface is called "__________________________."
     fog
20.     What are the four categories of clouds?
     high clouds/ intermediate clouds/ low clouds/ clouds that have vertical development
21.     Most high clouds are composed of __________________________________.
     ice particles
22.     Name three types of "high clouds."
     cirrus clouds/ cirrocumulus clouds/ cirrostratus clouds
23.     Intermediate clouds are composed mainly of _________________________________.
     water droplets
24.     Name two types of "intermediate clouds."
     altocumulus clouds/ altostratus clouds
25.     Name three types of "low clouds."
     stratocumulus clouds/ stratus clouds/ nimbostratus clouds
26.     What clouds look like a flat, white blanket?
     stratus clouds
27.     What clouds look like dense, puffy balls?
     altocumulus clouds
28.     What clouds are isolated and feathery?
     cirrus clouds
29.     What clouds look like thick, gray veils?
     altostratus clouds
30.     What clouds are thick, dark, and shapeless?
     nimbostratus clouds
31.     Which clouds have vertical development?
     cumulus clouds/ cumulonimbus clouds
32.     What is "precipitation"?
     all liquid or solid particles of water that fall to the earth
33.     Name four examples of precipitation.
     rain/ sleet/ hail/ snow
34.     What is the most common form of precipitation?
     rain
35.     What causes a rainbow to form?
     Rainbows form when the sun is shining and the air contains a spray of raindrops.
36.     Small, partially melted ice grains that fall to earth are called "__________________________."
     sleet
37.     Where are hailstones formed?
     in clouds
38.     When do hailstorms often occur?
     at the beginning of a thunderstorm
39.     The horizontal movement of air is "________________________."
     wind
40.     A(n) "________________________" is air that is moving in an up or down direction.
     current
41.     What happens when warm air rises as colder air sinks?
     This creates wind.
42.     What instrument indicates the direction in which wind is blowing?
     a weather vane
43.     Lightning is a discharge of __________________________.
     electricity
44.     What creates thunder?
     the rapid heating and expansion of air
45.     Thunder occurs along the path of _____________________________________.
     a lightning flash
46.     What is a tornado?
     a dark, funnel-shaped cloud that contains violently rotating air
47.     What speed can the wind inside a tornado's funnel reach?
     200 mph
48.     What tropical storm is also known as a "typhoon"?
     a hurricane
49.     Where are hurricanes created?
     over oceans, as groups of storms
50.     Official hurricane season lasts from ________________________ until _____________________.
     May/ November
© Educational Video Network, Inc. 2005 - www.evndirect.com
Your leading source for curriculum-based educational videos and DVDs.