1) The land part of the earth. a) lithosphere b) hydrosphere c) atmosphere 2) The water part of the earth. a) atmosphere b) hydrosphere c) lithosphere 3) The gaseous part of the earth. a) hydrosphere b) lithosphere c) atmosphere 4) It means "rock" or "stone" a) lithos b) hydro c) atmos 5) It means "water" a) atmos b) lithos c) hydro 6) It means "water vapor", "steam" a) hydro b) atmos c) lithos 7) The great or vast body of water that covers much of the earth's surface. a) sea b) ocean c) lake 8) Big land areas of the earth's surface. a) hills b) plain c) continent 9) Smallest continent. a) Africa b) Asia c) North America 10) Biggest continent. a) Asia b) South America c) Europe 11) Blanket of air that surrounds the earth. a) atmosphere b) water vapor c) clouds 12) A kind of fertilizer made from partly decayed plant materials. a) biodegradable b) nonbiodegradable c) compost 13) These are materials that come from the earth, some of it are oil, coal, metals, gemstones, stones and sands. a) minerals b) natural resources c) protein 14) These are materials that come from the environment. a) vitamins b) minerals c) natural resources 15) Air that is being breathe out by animals and is taken in by plants. a) oxgyen b) carbon monoxide c) carbon dioxide 16) Resources that can be replaced. a) renewable resources b) nonrenewable resources c) recyclable resources 17) Resources that cannot be replaced. a) renewable resources b) nonrenewable resources c) recyclable resources 18) Resources that can be used, recycled and reused. Metal is an example of it. a) renewable resources b) nonrenewable resources c) recyclable resources 19) Process by which some materials from nonrenewable resources are used again. a) reuse b) recycling c) decomposing 20) A careful use of natural resources. a) cleaning b) conservation c) planting

SCIENCE: EARTH AND SPACE

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