Name: 
 

6th Grade Review Over the Atmosphere



Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
 

 1. 

Oxygen is the most prevalent gas in Earth’s atmosphere. _________________________

 

 2. 

One type of aerosol occurs when wind picks up salt over the ocean. _________________________

 

 3. 

For each kilometer of altitude, there is a corresponding 6.5°C temperature drop. _________________________

 

 4. 

Rising air indicates high pressure. _________________________

 

 5. 

An air mass can acquire the characteristics of the area it covers. _________________________

 

 6. 

Nitrogen in the atmosphere is responsible for clouds and precipitation. _________________________

 

 7. 

Air pressure is due to the weight of air. _________________________

 

 8. 

Aerosols can be either solids or liquids in the atmosphere. _________________________

 

 9. 

The mesosphere is a layer of ions that reflects radio waves. _________________________

 

 10. 

Water vapor changes to a gas when condensation occurs. _________________________

 

 11. 

As the movement of molecules in the air increases, the temperature increases. _________________________

 

 12. 

When molecules collide, energy is transferred by convection. _________________________

 

 13. 

Current conditions of the atmosphere are called humidity. _________________________

 

 14. 

Clouds form when air rises, cools to a dew point, and then becomes saturated. _________________________

 

 15. 

A hurricane is usually less than 200 meters in diameter. _________________________

 

Completion
Complete each statement.
 

 16. 

The layer of gases surrounding Earth is the ____________________.
 

 

 17. 

Air pressure is due to ____________________.
 

 

 18. 

Carbon ____________________ is needed for photosynthesis and is a trace gas in the atmosphere.
 

 

 19. 

The lowest layers of the atmosphere are the ____________________ and ____________________.
 

 

 20. 

The thermosphere filters x-rays and gamma rays from the ____________________.
 

 

 21. 

The ____________________ contains most of the ozone of the atmosphere.
 

 

 22. 

The majority of water on Earth at any given time is found in ____________________.
 

 

 23. 

Energy is ____________________ when molecules collide during conduction.
 

 

 24. 

Cumulus and stratus clouds are ____________________ clouds.
 

 

 25. 

Clouds that extend throughout all levels of the atmosphere are ____________________ clouds.
 

 

 26. 

Lightning and sometimes hail develop from ____________________ clouds.
 

 

 27. 

During a weather ____________________ conditions are right for severe weather.
 

 

 28. 

The process of warm air rising and cool air sinking is called ____________________.
 

 

 29. 

Air pressure ____________________ with altitude in the atmosphere.
 

 

 30. 

As air cools, ____________________ increases if the amount of water vapor present doesn't change.
 

 

 31. 

The temperature at which condensation occurs is the ____________________.
 

 

 32. 

____________________ can be in the form of rain, freezing rain, sleet, snow, or hail.
 

 

 33. 

____________________ is measured by an anemometer.
 

 

 34. 

Because of the ____________________ effect, moving air is deflected to the right in the northern hemisphere.
 

 

 35. 

____________________ are like giant rivers of air.
 

 

 36. 

____________________ are important because weather systems move along their paths.
 

 

 37. 

Because of the Coriolis effect, air circulates in a ____________________ direction in the northern hemisphere in a low-pressure center.
 

 

Matching
 
 
Match each term with the correct definition below.
a.
conduction
h.
water cycle
b.
weather
i.
tornado
c.
precipitation
j.
hurricane
d.
atmosphere
k.
troposphere
e.
dew point
l.
stratosphere
f.
aerosol
m.
thunder
g.
front
n.
temperature
 

 38. 

current conditions of the atmosphere
 

 39. 

transfer of energy when molecules collide
 

 40. 

boundary between air masses of different temperatures
 

 41. 

process involving condensation and evaporation
 

 42. 

water vapor in the air that is too large to stay suspended in a cloud
 

 43. 

funnel cloud
 

 44. 

layer of gases surrounding Earth
 

 45. 

layer of atmosphere that contains most of the ozone
 

 46. 

air cools to this point and a cloud becomes saturated
 

 47. 

large storm with winds of at least 120 km/h
 

 48. 

formed from solids and tiny liquid droplets
 

 49. 

layer of atmosphere closest to Earth’s surface
 

 50. 

a measure of how fast air molecules are moving
 

 51. 

the sound produced due to the rapid expansion and contraction of heated air
 
 
Match each term with the correct definition below.
a.
Coriolis effect
g.
glaciers
b.
wind
h.
thermosphere
c.
stratosphere
i.
evaporation
d.
oceans
j.
condensation
e.
prevailing westerlies
k.
exosphere
f.
troposphere
l.
warm front
 

 52. 

the lowest layer of the atmosphere
 

 53. 

atmospheric layer that filters X-rays
 

 54. 

97.2% of Earth’s water
 

 55. 

liquid water becomes water vapor
 

 56. 

water vapor becomes liquid water
 

 57. 

caused by varying temperatures and air pressures
 

 58. 

winds between 39°N and 69°N latitude
 

 59. 

force that deflects prevailing winds
 

 60. 

warm air advancing to a cold air mass
 

 61. 

atmospheric layer that extends to space
 
 
Match the following atmospheric layers with their classification.
a.
lower layer
b.
upper layer
 

 62. 

mesosphere
 

 63. 

exosphere
 

 64. 

stratosphere
 

 65. 

troposphere
 

 66. 

thermosphere
 
 
Match the descriptions below with their cloud names.
a.
wispy high-level
d.
puffy and white
b.
thunderstorm producing
e.
middle clouds
c.
dull grey sheets
 

 67. 

cumulus
 

 68. 

stratus
 

 69. 

altostratus
 

 70. 

cirrus
 

 71. 

cumulonimbus
 
 
Match the descriptions below with the following types of weather fronts.
a.
fast-moving cold air mass overtakes a slower warm air mass
b.
warm air mass slides up and over a cold air mass
c.
cold air mass pushes under a warm air mass
d.
warm and cold air masses meet, but neither advances
 

 72. 

cold
 

 73. 

stationary
 

 74. 

warm
 

 75. 

occluded
 
 
Match the descriptions below with the terms related to the water cycle.
a.
water vapor that is transferred into the atmosphere from plant leaves
b.
water vapor cools, changing into droplets of liquid water
c.
water that has absorbed heat energy, changing into water vapor
d.
what powers the water cycle
 

 76. 

the Sun’s radiant energy
 

 77. 

evaporation
 

 78. 

transpiration
 

 79. 

condensation
 
 
Match each percentage with a water source on Earth.
a.
97.2%
d.
0.009%
b.
2.05%
e.
0.001%
c.
0.62%
 

 80. 

water vapor in the atmosphere
 

 81. 

groundwater
 

 82. 

ice caps and glaciers
 

 83. 

oceans
 

 84. 

rivers and lakes
 

Short Answer
 

 85. 

Number these layers of the atmosphere in the correct order from Earth to space.
a)      troposphere
b)      thermosphere
c)      exosphere
d)      mesosphere
e)      stratosphere
 

 86. 

Name the two most abundant gases in the atmosphere. What percentage of the total do they account for? Name two important trace gases.
 

 87. 

Explain how aerosols are formed in Earth’s atmosphere.
 

 88. 

What is a warm front? What is a cold front? What kinds of weather are associated with each?
 

 89. 

Describe the water cycle.
 

 90. 

Compare and contrast the density, temperature, and movement of high pressure atmospheric air and low pressure atmospheric air.
 

 91. 

Identify the four processes in the water cycle on the numbered lines in the illustration below.
sa091-1.jpg
 

 92. 

What are some factors that affect weather conditions?
 

 93. 

How does air circulate around Earth’s surface?
 

 94. 

Why is a tornado able to suck up anything in its path?
 

 95. 

What is the dew point?
 

 96. 

How are thunderstorms created? How does lightning form?
 

 97. 

Describe the troposphere.
 

 98. 

Describe the difference between evaporation and condensation.
 

 99. 

List six factors of weather.
 

 100. 

Describe the prevailing westerlies.
 

 101. 

Briefly describe the four kinds of fronts.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 102. 

When warm air rises and cool air sinks, it is called ____.
a.
conduction
c.
clouds
b.
convection
 

 103. 

During evaporation, water ____ energy.
a.
loses
c.
absorbs
b.
gains
 

 104. 

____ clouds extend through all layers.
a.
Low
c.
Vertical
b.
High
 

 105. 

Giant rivers of ____ develop at high altitudes and are called the jet stream.
a.
water
c.
ozone
b.
air
 

 106. 

When a warm air mass and a cold air mass meet but neither advances, it is a ____.
a.
stationary
c.
cold
b.
occluded
 

 107. 

Clouds begin to form when water vapor in the air reaches the correct ____.
a.
altitude
c.
temperature
b.
dew point
d.
all of the above
 

 108. 

Atmosphere layers are distinguished by their ____.
a.
composition
c.
altitude
b.
temperature
d.
all of the above
 

 109. 

The ____ is the layer of Earth’s atmosphere that is closest to Earth’s surface.
a.
stratosphere
c.
troposphere
b.
ionosphere
d.
exosphere
 

 110. 

In the ____, temperatures can increase up to 1,700°C.
a.
stratosphere
c.
thermosphere
b.
exosphere
d.
ionosphere
 

 111. 

Water in lakes and rivers ____ and changes to water vapor.
a.
precipitates
c.
condenses
b.
evaporates
d.
none of the above
 

 112. 

____ measures how fast air molecules are moving.
a.
Temperature
c.
Gravity
b.
Relative humidity
d.
Altitude
 

 113. 

Factors of weather include ____.
a.
temperature and cloud cover
c.
air pressure and wind direction
b.
wind speed and humidity
d.
all of the above
 

 114. 

____ occur because of changes in temperature and pressure.
a.
Clouds
c.
Winds
b.
Aerosols
d.
None of the above
 

 115. 

Drops of water or ice that become too large to be suspended in clouds are called ____.
a.
precipitation
c.
evaporation
b.
transpiration
d.
none of the above
 

 116. 

During an occluded front a fast moving cold front overtakes a slower moving ____ front.
a.
cold
c.
warm
b.
stationary
d.
all of the above
 

 117. 

A storm with winds over 120 km/h that can last several weeks is a ____.
a.
tornado
c.
jet stream
b.
hurricane
d.
thunderstorm
 

 118. 

____ clouds form at heights of 2000 meters or less.
a.
Cumulus
c.
Cirrostratus
b.
Cirrus
d.
Altocumulus
 



 
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