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3. Identify three energy transformations that occur to make electric energy.

3. Identify three energy transformations that occur to make electric energy.

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Key Concept Check 3. Identify three energy transformations that occur to make electric energy. work. - in the
Transcribed Image Text:Key Concept Check 3. Identify three energy transformations that occur to make electric energy. work. - in the
Roller Coasters Have you ever thought about the energy transformations that occur on a roller coaster? Most roller coasters first pull your car to the top of a big hill. At this point, the distance between you and Earth increases. Your potential energy also increases. Next, your car races down the hill. You move faster and faster. The gravitational potential energy is transformed to kinetic energy. At the bottom of the hill, your gravitational potential energy is small, but you have a lot of kinetic energy. This kinetic energy is transformed back to gravitational potential energy as your car moves up the next hill. Plants and the Body When a plant, such as broccoli, carries on photosynthesis, it transforms radiant energy from the Sun into chemical energy. The chemical energy is stored in the bonds of the plant's molecules. When you eat the broccoli, your body breaks apart the chemical bonds in the molecules that make up the broccoli. This releases chemical energy. Your body transforms the chemical energy to energy your body needs for movement, temperature control, and other life processes. Electric Energy Power Plants Plants that lived millions of years ago carried on photosynthesis just like the plants that are alive today do. These ancient plants stored radiant energy from the Sun as chemical energy in their molecular bonds. After the plants died, they were buried under sediment. After much time, pressure from the sediments that covered the plant remains turned the plants into fossil fuels. When fossil fuels burn, the chemical energy, which was stored in the molecules of plants that lived millions of years ago, transforms. At electric energy power plants, that chemical energy is transformed to the electric energy that you use in your home and school. As you read in Lesson 1, other forms of energy also can be transformed at electric energy plants. At these facilities, forms of energy-solar, wind, geothermal, and hydroelectric energy–are transformed to electric energy. Energy and Work When you study for a test, it might feel like a lot of work. But science does not define studying as work. Work is the transfer of energy that occurs when a force makes an object move in the direction of the force while the force acts on the object. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies,
Transcribed Image Text:Roller Coasters Have you ever thought about the energy transformations that occur on a roller coaster? Most roller coasters first pull your car to the top of a big hill. At this point, the distance between you and Earth increases. Your potential energy also increases. Next, your car races down the hill. You move faster and faster. The gravitational potential energy is transformed to kinetic energy. At the bottom of the hill, your gravitational potential energy is small, but you have a lot of kinetic energy. This kinetic energy is transformed back to gravitational potential energy as your car moves up the next hill. Plants and the Body When a plant, such as broccoli, carries on photosynthesis, it transforms radiant energy from the Sun into chemical energy. The chemical energy is stored in the bonds of the plant's molecules. When you eat the broccoli, your body breaks apart the chemical bonds in the molecules that make up the broccoli. This releases chemical energy. Your body transforms the chemical energy to energy your body needs for movement, temperature control, and other life processes. Electric Energy Power Plants Plants that lived millions of years ago carried on photosynthesis just like the plants that are alive today do. These ancient plants stored radiant energy from the Sun as chemical energy in their molecular bonds. After the plants died, they were buried under sediment. After much time, pressure from the sediments that covered the plant remains turned the plants into fossil fuels. When fossil fuels burn, the chemical energy, which was stored in the molecules of plants that lived millions of years ago, transforms. At electric energy power plants, that chemical energy is transformed to the electric energy that you use in your home and school. As you read in Lesson 1, other forms of energy also can be transformed at electric energy plants. At these facilities, forms of energy-solar, wind, geothermal, and hydroelectric energy–are transformed to electric energy. Energy and Work When you study for a test, it might feel like a lot of work. But science does not define studying as work. Work is the transfer of energy that occurs when a force makes an object move in the direction of the force while the force acts on the object. Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies,
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