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| 1.
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What is the difference between a tornado and a hurricane?
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| | A) | They are the same things. |
| | B) | Tornadoes occur over sea and hurricanes occur over land. |
| | C) | Tornadoes occur over land and hurricanes occur over sea. |
| | D) | Tornadoes happen during winter and hurricanes happen in the summer. |
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| 2.
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When two air masses of different densities collide, it's called__________.
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| | A) | a front |
| | B) | a hurricane |
| | C) | a high pressure zone |
| | D) | a storm |
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| 3.
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When the temperature reaches its ____ , snow, rain,or hail is likely to form.
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| | A) | evaporation point |
| | B) | relative humidity |
| | C) | dew point |
| | D) | saturation point |
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| 4.
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Weather refers to the state of the atmosphere__________.
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| | A) | at a specific temperature |
| | B) | over a long period of time |
| | C) | at a specific time and place |
| | D) | over a short period of time |
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| 5.
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What causes wind?
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| | A) | high pressure |
| | B) | Air moves from regions of high pressure to regions of low pressure. |
| | C) | low pressure |
| | D) | weather patterns |
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| 6.
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Cumulous clouds are associated with __________.
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| | A) | sunny weather |
| | B) | approaching storms |
| | C) | fair weather and rainstorms |
| | D) | fog |
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| 7.
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The prefix cirro added to the suffix cumulus, cirrocumulus refers to __________.
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| | A) | low, puffy, white clouds |
| | B) | high, curly clouds |
| | C) | high, puffy, white clouds |
| | D) | middle-level, flat, even clouds |
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| 8.
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____ is the measure of amounts of moisture in the air compared to the amount needed for saturation at a certain temperature.
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| | A) | Relative humidity |
| | B) | Humidity |
| | C) | Saturation |
| | D) | Air pressure |
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| 9.
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An anemometer measures_____.
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| | A) | temperature |
| | B) | wind speed |
| | C) | atmospheric pressure |
| | D) | humidity |
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| 10.
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What is the cause of the strong winds associated with thunderstorms?
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| | A) | strong updrafts of warm, moist air and sinking, rain-cooled air |
| | B) | weak updrafts of warm, moist air |
| | C) | rain-cooled air |
| | D) | strong updrafts of dry air |
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| 11.
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What causes low-pressure winds to swirl in a counter-clockwise direction?
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| | A) | Earth's revolution around the Sun |
| | B) | the natural tendency of winds to blow from low to high pressure |
| | C) | precipitation |
| | D) | Earth's rotation |
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| 12.
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Of the four main types of precipitation, which refreezes after melting near the ground?
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| | A) | hail |
| | B) | snow |
| | C) | rain |
| | D) | sleet |
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| 13.
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What creates a wind shear?
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| | A) | thunder |
| | B) | a difference in wind direction and speed |
| | C) | increasing rainfall |
| | D) | similar wind speeds and directions |
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| 14.
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What type of clouds form thunderstorms?
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| | A) | nimbostratus |
| | B) | cumulonimbus |
| | C) | cirrostratus |
| | D) | nimbus |
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| 15.
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An occluded front occurs between _______ air masses.
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| | A) | two |
| | B) | an unknown number of |
| | C) | four |
| | D) | three |
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| 16.
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How do isobars help meteorologists predict weather?
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| | A) | They help meteorologists predict dry weather. |
| | B) | They help meteorologists tell how fast wind is blowing by noting how far apart isobars are placed on a weather map. |
| | C) | They help meteorologists tell how fast wind is blowing by noting how closely isobars are placed on a weather map. |
| | D) | They help meteorologists see areas of equal temperature. |
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| 17.
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Stratus clouds form __________.
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| | A) | fog |
| | B) | puffy white clouds |
| | C) | fibrous, or curly, clouds |
| | D) | layers of even sheets in the sky |
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| 18.
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The term stationary front describes a front __________.
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| | A) | that continues forward |
| | B) | that changes |
| | C) | that is present for a brief amount of time |
| | D) | that stops advancing |
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| 19.
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What does water vapor condense around to form clouds?
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| | A) | air molecules |
| | B) | small particles like dust and salt |
| | C) | snow |
| | D) | space |
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| 20.
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What element of air determines its temperature?
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| | A) | the arrangement of air molecules |
| | B) | the direction of air molecules |
| | C) | the composition of air molecules |
| | D) | the average motion of air molecules |
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