Name ______Date ______
Weather Final Review Maloney/Zaratin
Atmosphere
The atmosphere is a mixture of gases which include 78% nitrogen, 21% oxygen and 1% other gases (ozone, carbon dioxide). Weather describes the conditions of the atmosphere at one location for a short period of time. Climate is the average weather that prevails from season to season.
Air pressure is caused by the weight of the air pushing down. High air pressure is cool and dry with clear, calm weather. Low pressure is generally warm and moist with cloudy, unstable weather. A barometer is used to measure air pressure.
Winds are caused by differences in air pressure. An anemometer is used to measure wind speed.
1. The conditions for the atmosphere for the day is called ______.
2. The average weather that is the same every year is called ______.
3. The constant movement of water between the air, the land and the oceans is the ______cycle.
4. Winds are caused by differences in ______.
5. Stormy and cloudy weather is found in a ______pressure system.
6. A high pressure air mass brings ______weather.
Directions: Label the parts of the water cycle using the following words: Precipitation, Condensation, Run-off, Evaporation.
1. ______
2. ______
3. ______
4. ______
Air Masses
An air mass forms when a body of air remains nearly stationary over a large section of Earth’s surface. Air masses that form over water are moist. Air masses that form over land are dry. Ones that form in polar areas are cold. Air masses that form is tropical areas are warm.
Directions: Complete the chart below.
Air Mass Type / Map Symbol / Formed over… / CharacteristicsContinental Tropical / Hot, dry air
cP / Cool land
Cool, moist air
Warm ocean
Fronts
Fronts are boundaries between different air masses. When a front passes there is a change in weather. It causes cloud formation, winds, precipitation and temperature changes.
Directions: Use the diagram to complete the following sentences.
1. Locations with clear skies include ______and ______.
2. Locations probably experiencing rain include ______and ______.
3. A warm front is approaching location ______.
4. The cold front is moving ______.
5. The low pressure system is experiencing ______weather.
Review Questions:
Base your answers to questions 1-4 on the diagram of the water cycle below.
_____ 1. Which arrow represents evaporation?
(1) A (2) B (3) C (4) D
_____ 2. Which arrow represents processes that increase humidity in the air?
(1) A and B (2) A and C (3) C and D (4) C and B
_____ 3. What provides the energy to move water along arrows C and D?
(1) gravity (2) the Sun (3) ocean tides (4) the Moon
_____ 4. At which location is condensation occurring?
(1) at the water surface (2) in the cloud
(3) on the land (4) in the forest
_____ 5. Winds are caused by differences in
(1) humidity (2) cloud cover (3) air temperature (4) air pressure
_____ 6. On a weather map, an air mass that is cold and dry would be labeled
(1) mP (2) mT (3) cT (4) cP
_____ 7. The weather conditions in an air mass are determined by
(1) the size of the air mass (2) the area over which the air mass formed
(3) the wind speeds in the air mass (4) the amount of moisture in the air
Base your answers to questions 8-11 on the following diagram.
The diagram is part of a weather map for locations in the Eastern United States. The map shows the locations of the low pressure system, fronts and weather stations A, B, C and D.
_____ 8. At which station is it most likely raining?
(1) A (2) B (3) C (4) D
_____ 9. As the front passes D, the air temperature will probably
(1) decrease (2) increase (3) remain the same
_____ 10. In the next few hours station C can expect cloud cover to
(1) decrease (2) increase (3) remain the same
_____ 11. The cold front is moving towards the
(1) northeast (2) southeast (3) southwest (4) northwest
_____ 12. On a summer afternoon, the reading on the barometer begins to decrease. This indicates that
(1) a storm is approaching (2) skies will stay clear
(3) weather conditions will approve (4) it will not rain for the next 3 days
_____ 13. Which is a form of precipitation?
(1) frost (2) snow (3) dew (4) fog
_____ 14. The climate of a region describes the
(1) daily weather conditions (2) yearly weather conditions
(3) latitude and altitude of the location (4) wind patterns for the area
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