1) What is a force a) A type of energy that can only be created. b) A push or pull on an object. c) The color of an object. d) The sun. 2) What force is applied on the wheelbarrow? a) push b) pull c) magnetism d) gravity 3) Why does the cart move? a) because of the push force. b) because of the pull force. c) because of magnetism. d) because of gravity. 4) Why does the moon orbit the earth? a) Magnetic Force (Magnetism) b) Gravitational Force (Gravity) c) Electrostatic Force (Electrostatic) 5) An apple from the tree falling to the ground is caused by _____. a) Magnetic Force (Magnetism) b) Gravitational Force (Gravity) c) Electrostatic Force (Electrostatic) 6) How do contact forces work? a) These forces only work if the objects touch. b) These forces work without the objects touching. 7) How do non-contact forces work? a) These forces only work if the objects touch. b) These forces work without the objects touching. 8) What is the correct example of a contact force? a) push and pull b) pull and magnetism c) gravity and push d) magnetism, gravity and electrostatic 9) What is the correct example of a non-contact force? a) pull and magnetism b) push and pull c) magnetism, gravity and electrostatic d) gravity and push 10) What is an example of a contact-force? a) playing football b) objects falling to to the ground c) rainfall d) paperclips moving towards a magnet 11) What is an example of a non-contact a) pressing the elevator button b) throwing a dart c) opening a book d) rubbing balloon on your hair and causing electrostaticity 12) Contact forces work only if the objects touch. a) True b) False 13) Which has got the strongest force of gravity? a) the Sun b) the Earth c) the Moon d) the School 14) Gravity makes _______ a) things stay on the ground. b) things float in the air. c) the sun orbit the earth. d) chicken pie. 15) What are magnets? a) Objects that produce sounds. b) Objects that change colours. c) Objects that float on water. d) Objects that attract or repel metals. 16) What happens to opposite poles of magnets? a) They attract. b) They repel. c) They push each other away. d) They run away. 17) What happens to the same poles of magnets? a) They attract. b) They pull each other. c) They repel. d) They don't do anything. 18) Choose an example of magnetism. a) Magnet sticking to a refrigerator door. b) Cristiano Ronaldo scoring a goal! c) Talking a lot in the classroom. d) Not paying attention to the teacher. 19) When magnets attract, it means ________ a) the objects come close towards each other. b) the objects push away from each other. c) they dance. 20) When magnets repel, it means ________ a) the objects push away from each other. b) the objects come close towards each other. c) they sing. 21) Who discovered gravity? a) Albert Einstein b) Isaac Newton c) Mark d) Oppa Gangnam Style

Unit 4 - Forces

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