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Review 2 - 1.03 - sem 2
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Energy can change things. True or false?
True
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Name some examples of fuel energy
oil, coal, gas
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Name some examples of heat energy
iron, cooker, microwave, oven, ....
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Name some vehicles we use in the past
horse, wagon
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Name some examples of sound energy
speaker, headphones, drums, guitar
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We don't need energy when we cook food. True or false?
False
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Who invented the light bulb?
Thomas Edison
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Who invented the telephone?
Alexander Graham Bell
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Attract or repel?
Attract
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Attract or repel?
repel
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Name some inventions or machines used for communication:
smart phone, computer, radio, laptop
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How do wheels and pulley help our life?
They help something move easier.
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Name some inventions or machines used for farms:
Tractor, Harvester, Spreader, Seeder, Digger, Sprayer
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Name some inventions or machines used for construction:
Truck, Crane, Conrete Mixer, Backhoe, Excavator, Roller
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Name some kinds of energy
sound, heat, fuel
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