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Ch.9 How Things Move
| Question | Answer |
|---|---|
| If you add _____ to an open door, it moves. | force |
| The location of an object is its ________. | position |
| What is caused by an object rubbing against another object? | friction |
| When an object changes position, it is in ______. | motion |
| The pull of gravity determines the ______ of an object. | weight |
| Scientists measure weight in _______. | newtons |
| The length between two places is called ______. | distance |
| A _____ is a unit of measurement in the English system. | pound |
| What causes things to fall to Earth? | gravity |
| What do we use to measure how fast something moves? | speed |
| A skier changes direction when they change _______. | positions |
| In order to have the shortest time, you have | to run the farthest in shortest time |
| Why is it hard to skate on a gravel road? | gravel increases friction |
| What measurements are needed to measure speed? | time and distance |
| What will slow down an object? | friction |
| If you run 4 miles in an hour, how far can you run in 1-1/2 hours? | 6 miles |
| If you run 12 miles in an hour, how far can you run in 1-1/2 hours? | 18 miles |
| What direction would you travel to go from Illinois to Florida? | South |
| What 2 properties would cause a beach ball to travel a shorter distance than a baseball? | surface area and friction |
| If you pick up a bowling ball, football, and golf ball, how do you know a bowling ball weights the most? | takes more force to pick up bowling ball |
| If you throw a ball in space, how far will it travel? | forever |