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centigrade Centigrade is a measure of temperature that is abbreviated C. Water freezes at 0°C and boils at 100°C. | atmosphere The atmosphere is the gas that surrounds a planet. | acid rain Acid rain is polluted and is harmful to the environment. |
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dust storm A dust storm is a very strong wind that carries dust across the land. Dust storms occur in dry areas, like deserts. | cyclone A cyclone is a storm of rapidly spinning air that is very dangerous. |
cloud Clouds are white or gray object that floats in the air and contains tiny water drops or ice particles. |
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hail Balls of ice that fall from clouds are called hail or hailstones. |
fahrenheit Fahrenheit is a measure of temperature that is abbreviated F. Water freezes at 32°F and boils at 212°F. |
evaporation Evaporation is the process in which a liquid goes into its gaseous form, for example, when liquid water becomes water vapor. |
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Ice Age An Ice Age is a time when the Earth becomes very cold and much of it is covered with ice and glaciers. There have been many Ice Ages on Earth; the last one lasted from about 2 million to 10,000 years ago. |
ice Ice is frozen water. |
hurricane A hurricane is a strong storm with high winds and rain. The very center of the storm, called the eye, is calm. |
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lightning Lightning is a flash of light in the sky caused by an electrical storm. |
icicle Icicles are hanging ice that are formed from dripping water. |
iceberg An iceberg is a huge chunk of ice that floats in the sea. Most of an iceberg is hidden under the water. |
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radar Radar is a device that uses reflected radio waves to located objects at a distance. Radar is short for "radio detection and ranging." | precipitation Precipitation is rain, snow, hail, or sleet. |
meteorologist A meteorologist is a scientist who studies the weather. |
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sky The sky is blue. |
rainbow A rainbow appears when sunlight passes through bits of water in the air. The white light is broken up into many colors. | rain Rain is water that falls from clouds. Rain is measured using a rain gauge. |
| snowflake Snowflakes are made of snow - they are crystals. No two snowflakes look alike, but they all have six sides. | snow Snow is flakes of frozen water that fall from clouds when it is very cold. |
sleet Sleet is freezing rain. |
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thunderstorm A thunderstorm is a an electrical storm with lightning (flashes of bright light), which creates thunder (very loud sounds). |
thermometer A thermometer is used for telling what the temperature is. | storm A storm is very bad weather, like a hurricane or a typhoon. |
| vortex Rapidly spinning gas or liquid is called a vortex. | twister Twister is another name for a tornado, a rapidly spinning air that is very dangerous. |
tornado A tornado is rapidly spinning air that is very dangerous. Tornados are funnel-shaped. If a tornado travels over a body of water, it is called a waterspout. |
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waterspout A waterspout is a tornado that travels over a body of water. |
water cycle The Water Cycle is the journey water takes as it circulates from the Earth to the sky and back again. |
water Water is a liquid that we drink and use to wash. Water covers over two thirds of the surface of the Earth, and much of our body is made of water. |
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weather vane A weather vane is a device that points the way the wind is blowing. | weather balloon A weather balloon is a giant balloon that is sent high in the sky to measure weather information, like temperature, wind speed, and air pressure. | weather Weather is the state that the outdoors is in, like how windy it is, how hot or cold it is, or if it is raining or snowing. |
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windsock A windsock is a device that shows which way the wind is blowing and the wind’s speed. |
Wind The wind is air that blows outside. |
Whirlwind Rapidly spinning air is called a whirlwind. |
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