Force
and
Motion
Review
100
A force is a _____ or a ______ in a certain direction.
Push or a pull!
100
What is motion?
When an object moves because of a force.
100
Is static electricity contact or non-contact?
Non-contact.
100
If a surface is slippery does it have a lot of friction or little friction?
A slippery surface will have little friction. This is why it is slippery, like a water slide. It speeds you up!
200
Explain why this happens:
When the balloon is rubbed onto your hair, tiny particles pass from your hair to the balloon which cause a build up of static electricity. The static electricity pulls on the tissue paper lifting it up.
200
Which falls faster?
The crumpled paper. It falls faster because it is smaller, and the friction on the air has less to cover.
The flat paper catches more friction from the air.
200
Which falls faster:
long and slim OR
wide and thick?
Long and slim!
200
Push or Pull
Pull
300
Forces are either _______ or _____-_________.
Contact or non-contact. 
300
Does touching the South Pole to the North Pole attract or repel?
Attract.
300
Name something that is magnetic in this classroom.
Paperclips, window sill, keys, whiteboard, etc.
300
What makes something a contact force?
It has to touch the object to make it move. Example: kicking a ball.
400
Balanced or unbalanced force?
Balanced.
400
Push or Pull
Push
400
Does friction speed up or slow down movement?
Friction slows down movement.
400
If you put a toy car down a ramp, which surface would the car go faster and farther on?
A wooden ramp. OR
A wooden ramp with bubble ramp on it.
The ramp without bubble wrap. This is because the bubble wrap would create friction and slow the car down.
500
Name a non-contact force.
Gravity, static electricity, magnetism.
500
Unbalanced forces make objects ________.
Move
500
If a surface is rough and bumpy, does it have a lot of friction or little friction?
A rough and bumpy surface would have a lot of friction. It would slow you down. Like a ball on grass!
500
Would a magnet attract a piece of paper?
No! It is not metal.