1) Which one is harder? a)  iron nail b) wood 2) Which one is harder? a) steel b) copper 3) What's a stiff, smooth material that is used for covering floors? a) Wool b) plastic c) rubber d) linoleum 4) What is made of? a) wood b) metal c) copper 5) What is this? a) linoleum b) plastic c) carpet 6) Metal can scratch the wood. a) True b) false 7) Copper is much stronger than steel. a) True b) False 8) What is this? a) scratching b) denting c) diamond 9) What is amount of matter in an object? a) Mass b) matter c) displaced 10) ………. is everything around you that takes up space. a) Mass b) Matter c) Displaced 11) What is called to move something from its usual place? a) Mass b) Matter c) Displaced 12) Which one is wrong? a) Glass sinks. b) Coin sinks. c) bottle of the water floats d) shuttlecock sinks. 13) Why is the ball floating? a) because the ball has less density. b) because the ball has more density. 14) If objects sink it means that the dense of the water is less…… a) True b) False 15) If objects float it means that the dense of the water is more…… a) True b) False 16) Which one is wrong? a) The picture shows that the ship is floating.………… b) The stone has more density. c) The ship has less density than the water. d) The ship has more density than the water. 17) Magnetic materials are attracted to magnets…… a) true b) false 18) Which of the following is magnetic? Choose two anwers a) b) c) d) e) 19) Which one is true about the magnet? a) A magnet will attract wood and glass. b) All metals are magnetic. c) Pure silver and gold are magnetic. d) A compass always points to the magnetic north pole 20) Which one is false? a) Magnetic materials are always made from metal. b) Metals, such as steel and iron are attracted to magnets… c) Pure silver and gold are magnetic. 21) Which one is True about the paper? a) Paper is a man-made material…… b) Paper is made of plastic……… c) Paper is harder than metal. 22) Which one is false? a) printing b) cleaning c) wrapping present 23) Which one does not float and not magnetic? a) b) c) d) 24) CONDUCTOR&INSULATOR. Which one is true? a) Materials that do not let heat through are called insulators……. b) Wood and some plastics are conductor. c) Metals are good insulator of heat energy………. 25) Which one of these is a conductor? a) wooden spoon b) house key c) piece of paper. 26) Which one of these is an insulator? a) an iron nail b) a fork c) a rubber 27) Which one  is wrong? a) The pan is a conductor. b) The handle of the pan is an insulator. c) The wooden spoon is a conductor.

SCIENCE LESSON 21 TO 27

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