Grade 6 Science
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| On a weather map, these join places that have the same air pressure | isobars
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| On a weather map, these join places that have the same temperature | isotherms
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| When Earth's surface is heated, it radiates some of the energy back into the atmosphere as _______. | infrared radiation
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| What are the 3 ways that heat is transferred? | conduction, radiation, and convection
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| When heat is transferred by touching a heat source, that is _____________. | conduction
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| Earth's major wind belts | trade winds, prevailing westerlies, polar easterlies
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| A ____________ forms when cold air moves underneath warm air, forcing the warm air to rise. | cold front
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| A ___________ forms when warm air moves over cold air. | warm front
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| Most of the energy that heats Earth's atmosphere is | ultraviolet radiation
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| Heat from a fire reaches you by______ | radiation
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| A ___________ occurs when a warm air mass and a cold air mass meet and NO movement occurs | stationary front
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| Convection takes place because | cold air is denser than warm air (p. 477 + p. 500)
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| When a warm air mass is caught between two cooler air masses which kind of front occurs? | an occluded front (p. 501)
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| When you feel the sun's warmth on your face, the heat is being transferred by ______. | radiation (p. 469)
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| Most of the heating of the troposphere is caused by ______. | convection (p. 470-471)
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| Winds are caused by differences in ____ | air pressure
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| Winds that blow over short distances | local winds
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| Winds that blow steadily from a specific direction and over long distances | global winds
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| a horizontal movement of air from an area of high pressure to an area of lower pressure | wind
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| All winds are caused by differences in | air pressure
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| Most differences in air pressure are caused by | unequal heating of the atmosphere
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| regions near the equator with little or no wind | doldrums
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| Energy from the sun travels to Earth in the form of | electromagnetic waves
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| What kind of front moves quickly and can cause sudden weather changes, including thunderstorms followed by clear skies? | cold front
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| A moving warm air mass collides with a slowly moving cold air mass. This is called a | warm front
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| What tool is used to measure relative humidity? | a psychrometer
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| A scientist who studies the causes of weather and tries to predict it | a meteorologist
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| a warm water current that occurs every 2 to 7 years in the tropical Pacific Ocean, causing changes in winds, currents, and weather patterns that can lead to dramatic climate changes | El Nino
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| can cause sunburns, skin cancer, and eye damage | the sun's ultraviolet radiation
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| the process by which heat is trapped in the atmosphere by water vapor, carbon dioxide, methane, and other gases that form a "blanket" around the earth | the greenhouse effect
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| increased cooling caused by the wind | wind-chill factor
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| sea and land breezes over a large area that change directions with the SEASONS | monsoons
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| bands of high-speed winds about 10-kilometers above Earth's surface | jet streams
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| an instrument used to measure temperature | a thermometer
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| What occurs at night, a land breeze or a sea breeze? | land breeze
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| What occurs during the day, a land breeze or a sea breeze? | sea breeze
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| When air flows from the land to the water it is called a ________ | land breeze
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| When air flows from the water to the land it is called a _____. | sea breeze
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