Why Do We See Lightning Before We Hear Thunder?
Why Do We See Lightning Before We Hear Thunder? Lightning usually reaches our eyes before thunder reaches our ears because light travels faster than sound. Light...
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Where Does Gasoline Come From?
Where Does Gasoline Come From? Most gasoline is obtained from crude oil or petroleum, the oil that comes from oil wells. Crude oil is a fossil fuel. That means it was...
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Where Does Snow Come From?
Snow is a form of precipitation like rain and sleet. Snow forms in clouds when the air temperature up there gets below freezing. Water molecules come out of the air and...
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What Causes Waves in the Ocean?
What Causes Waves in the Ocean? Most waves in the ocean are caused by the wind. Somewhere over the ocean, wind ruffles the surface of the water. Ripples form and grow...
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How Does a Microwave Oven Cook Food?
How Does a Microwave Oven Cook Food? Regular ovens cook food by first heating air, which then heats the food. A microwave oven cooks by creating heat inside the food....
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