Types of Forces
What is a force?
a push or a pull
When you let go of a balloon filled with air, it flies around the room because of this...?
unbalanced force
This happens when you move an object closer to you with a force
Pull
When two equal forces act on an object in opposite directions, the object stays...?
Still
You can _______________ what will happen to objects undergoing repeating motion by studying patterns.
PREDICT
When you pull a rope in tug-of-war, you are trying to create....?
tension
This is what happens to a soccer ball when it is kicked down a hill
It speeds up
If a seesaw has a heavy person on one side and a light person on the other, it is...
unbalanced
When several forces are acting on an object that is at rest, and the object does not move, then the forces are ___________________.
BALANCED
The force that allows magnets to attract certain metals is called?
Friction
When a ball bounces, gravity pulls it back to the..?
Ground
When two objects collide, like two marbles, they exert this on each other.
Force
The force that will change the motion of a toy car that is not moving.
unbalanced force
When you use the brakes on a bike to come to a quick stop, the force that causes the wheel to stop moving is ______________________.
FRICTION
The force that allows magnets to attract certain metals is called?
Magnetism
If a balloon is rubbed on your hair, it may cause your hair to.....
stick up
This is the force that opposes motion between two surfaces that are in contact
Friction
When playing tug-of-war and both sides pull equally hard, the rope does not move because the forces are...?
You can______________________a friend on a swing, and you can________________on a rope during tug-of-war. Both are types of forces.
PUSH, PULL
The type of force that helps you pick up a paperclip with a magnet.
magnetic force
When a soccer ball is kicked, it changes due to the applied...?
force or direction
This is called a push
Two forces working perfectly against each other so that an object stays still or moves with constant speed. what is this force called?
Balanced Force
You can reduce friction by using a ____________________. Cars can use this for their engines to make them run smoothly.
Lubricant