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1) Sun, wind, running water, tides, biomass, and geothermal resources are known as a. renewable b. non renewable c. reversible d. irreversible
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2) Modern wind turbines produce a. heat b. oil c. gas d. electricity
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3) Fossils fuel which stores large amount of energy in a small volume is a. crude oil b. natural gas c. coal d. kerosene
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4) Fossils fuel comes from the remains of organisms which lived a. 100 years ago b. 10 years ago c. 1 year ago d. 5 years ago
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5) The energy in from of heat and light is obtained from a. sun b. tides c. biomass d. wind
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6) 'Photovoltaic' cells are also termed as a. solar cells b. voltar cells c. battery cells d. rechargeable cells
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7) Food waste can be burnt to release a. heat b. gas c. light d. oil
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8) Any substance which is being burnt to release energy is called a. fuel b. fossil c. crude d. unpurified
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9) The 'SI' unit for energy is a. watt b. joule c. newton d. kilogram
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10) Green plants provide food for other a. plants b. living things c. non living things d. trees
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11) Tiny organisms which lived in seas and oceans are called a. mosses b. algae c. plankton d. coral reef
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