Gravity or Friction
Result
. . . .

Determine whether the force at work in the following situations is gravity, friction, or neither. Click on the correct answer.

1. The oceans and seas change tides several times over the course of a day.
Gravity
Friction
Neither

2. It takes more effort to climb up a flight of stairs than to go down the same flight of stairs.
Gravity
Friction
Neither

3. If a pair of jeans is loose, a belt can be worn to hold it up.
Gravity
Friction
Neither

4. When a body of flowing water reaches a cliff, it forms a waterfall.
Gravity
Friction
Neither

5. A car becomes harder to drive in rainy days because of slippery roads.
Gravity
Friction
Neither

6. Bowling lanes are regularly waxed so that bowling balls will roll faster.
Gravity
Friction
Neither

7. Repeatedly using a pencil eraser to erase pencil marks wears the eraser off.
Gravity
Friction
Neither

8. Rubbing both hands together is a good way to keep them warm in a cold room.
Gravity
Friction
Neither

9. Steam rises out of a boiling pot of water.
Gravity
Friction
Neither

10. Heavy magnets are used to move around huge metallic objects such as cars.
Gravity
Friction
Neither

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