1) Which of the following words can help you to describe what is happening in Picture ? Circle all the correct answers. a) a) at rest b) b) in motion c) c) pushing force d) d) pulling force e) e) force from the left f) f) force from the right 2) Which of the following statements describe characteristics of the force of friction? Choose all the correct answers a) a) It opposes motion or potential motion. b) b) It speeds up motion. c) c) It occurs when objects are in contact with each other. d) d) It occurs when objects slide against each other. e) e) Its presence can cause motion energy to transform into heat energy. f) f) It makes movement easier 3) Write the word harmful or helpful to tell the outcome of the friction. Walking on ice while in a hurry a) harmful b) helpful 4) Write the word harmful or helpful to tell the outcome of the friction. Starting a campfire by rubbing two sticks together a) harmful b) helpful 5) Write the word harmful or helpful to tell the outcome of the friction. Parts wearing down in an engine a) harmful b) helpful 6) Write the word harmful or helpful to tell the outcome of the friction. Your bike tires having worn smooth a) harmful b) helpful 7) Write the word harmful or helpful to tell the outcome of the friction. Developing a blister on your heel from your shoe a) harmful b) helpful 8) which of the following are never magnetic? Circle all the correct answers. a) Leaf b) t shirt  c) needle  d) ant e) apple f) cup 9) Which forces do maglev trains use to levitate? a) a) push b) b) pull c) c) friction d) d) gravity e) e) magnetism 10) North poles .............. to south poles a) attract b) repel 11) South poles .............. to south poles a) attract b) repel 12) When several forces are acting on an object that is at rest, and the object does not move, then the forces are a) motion  b) balanced c) unbalanced d) pattern e) predict 13) You can ............ what will happen to objects undergoing repeating motion by studying patterns. a) motion  b) balanced c) unbalanced d) pattern e) predict 14) When five forces are acting on an object, and they cause the object to change its motion, then the forces are a) motion  b) balanced c) unbalanced d) pattern e) predict 15) One kind of force that works over a distance without touching is ...... a) motion  b) balanced c) unbalanced d) magnetism   e) predict

Investigating Forces

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