1) The outermost hard layer of the Earth a) Humus b) Crust c) Top soil 2) Dry soil does not contain water a) true b) false 3) A force that is caused by two surfaces rubbing together a) Friction b) Force c) Push d) Pull 4) Which among the following shows evaporation? a) Water falls as rain. b) Water changes into water vapour. c) Water vapour changes into water d) Water changes into snow 5) Plants are very important to our environment because they absorb -------------- a) Methane b) Carbon dioxide c) Water vapor d) Oxygen 6) If these boys are pulling with the same amount of force. What will happen? a) The boy in blue will win. b) They will not move at all. c) The boy in red will win. d) Both will fall down 7) What kind of matter fills a balloon? a) solid b) liquid c) gas 8) ____ is matter that has a definite shape and takes up a definite amount of space a) gas b) liquid c) solid 9) What is it called when the state of matter changes from a liquid to a solid? a) Vaporization b) Freezing c) Condensation d) Melting 10) Man-made materias are... a) wood and paper. b) paper and glass. c) stones and minerals. d) plastic and petroleum 11) When the average weather conditions remain more or less the same for a long period of time, then it is called a _____ a) season b) fog c) weather 12) During ______ , the weather becomes dry for most of the days. It is neither hot nor cold and many trees shed their leaves in this season. a) winter b) summer c) autumn d) rainy 13) Rahul requested his mother to make hot soup because of the weather outside. How was the weather outside a) hot b) rainy c) windy 14) What forms after a rock has been weathered over many years? a) valleys b) a stream c) soil d) lakes 15) This is remains of plants and animals that were once alive a) rocks b) water c) air d) humus 16) How does soil help the trees? a) it grows leaves for them b) it gives nutrients to the trees c) it blows in the wind d) it catches dead leaves 17) Frank wants to grow some bean seeds in a flowerpot. Which soil should Frank put in the pot? a) soil with a lot of clay b) soil with a lot of sand c) soil with a lot of rocks d) soil with a lot of humus 18) Push is the force that moves an object a) closer to something b) away from something 19) How many states of matter are there? a) Two b) Five c) Three d) One 20) Glass is an example of a ____ a) Substance b) Gas c) Material

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