1) Air is made up of _________ a) Gas b) Water c) Soil 2) Nitrogen is an important nutrients for _______. a) human b) plants c) all the above 3) Carbon dioxide is a gas that is useful for plants to do _____________. a) Photo-shop b) Photo-synthesis c) Photo-light 4) 21% of the air is made up of ______________. a) Nitrogen b) Carbondioxide c) Oxygen 5) The ________________ is made up of blanket of gasses that is used to protect the Earth from harmful rays. a) Earth b) Atmosphere c) Globe 6) We use air to fill in the ___________. a) Tires b) Balloon c) All of them are correct. 7) Air is used to _________ things such as; sailboat, windmill and helicopter. a) move b) fill c) stop 8) Air, heat and fuel is needed for _____________ the campfire. a) moving b) burning c) filling 9) Birds can fly with the help of their wings and _________. a) water b) soil c) air 10) Human needs air to _________. a) breathe b) eat c) walk 11) We cannot see, touch and smell clean air. But we can _______ them because of their effects. a) touch b) feel c) smell 12) ________ % of the air is made up of carbon-dioxide and other gases. a) 1 b) 21 c) 78

Science Games - Air

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