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Forces&Motion review

Unit review

QuestionAnswer
Why is it harder to ride your bike on a windy day? The wind pushes against the bike, creating drag and making it harder to pedal.
Why do you need to add lubrication to machine parts? Lubrication reduces friction.
If you apply force in the same direction an object is moving, what will happen? The object will speed up.
When objects are closer together, what is stronger? Magnetism
If neither side of a tug-of-war game is moving, what is this an example of? Balanced forces
An example of friction Car tires wearing down
What is shown on a time-distance graph? How far an object moves over a period of time
What happens when unbalanced forces act on an object? The object will change in speed or direction.
Which force is weakened when water is added? Friction
What units do we use to measure distance? north, south, east, west
Friction causes objects to.... slow down
An object with a greater mass will move slower or faster? slower
What tool do we use to measure mass? a balance scale
What tool do we use to measure distance? a ruler
What does a horizontal line on a time-distance graph show? an object that has stopped moving
What does a steep line on a time-distance graph show? an object that is moving faster
Which force causes objects to fall? gravity
Created by: mrushton