Show:
Vocabulary
Forces
Changes in Motion
Motion
Mixed
100
What is an increase in motion?
Acceleration
100
Which force pulls you down a playground slide?
Gravity
100
Magnets have a negative and positive pole. What happens if you try to touch the positive ends of two magnets together?
The positive poles will repel each other.
100
Charlene kicked the winning goal in her last soccer game. What force acted between Charlene's foot and the ball to cause the ball to move?
Push
100

The action or process of moving or being moved

Motion

200

Ability to do work

Make something happen

Energy

200
The force that works against movement.
Friction
200

What is a change in position?

Movement

200
Sandley started pushing a bookcase across the room.Then, he removed the books and continued pushing with the same force and direction. How does removing the books affect the motion of the bookcase?
The mass is decreased, making the bookcase move faster.
200

All forces are equal [TRUE or FALSE]

False

300
This pulls objects to its center of the Earth. It keeps you grounded.
Gravity
300
The type of force which results in movement?
An unbalanced force.
300

Carpet has __________friction than a smooth glass surface.

More

300

Motion can be measured by observing the _____________ traveled in a certain amount of

_____________.

distance;time

300
A rolling ball will slow down until it finally stops. What force slows down and stops the ball?
What is friction.
400

property of an object that resists movement by force

if an object is in motion, it stays in motion

if an object is at rest, it stays at rest

Inertia

400
Ms. Starling's class and Ms. Howard's class are playing tug-of-war. After several minutes, the students notice that the rope has not moved at all. What is one possible cause of this?
The two classes have created a balanced force on the rope.
400
A toy car rolling along different surfaces will experience different amounts of friction. A toy car would encounter the most friction when rolling on which surface?
A rough surface (for example: a sandy beach, over grass, over rocks)
400

Friction can slow the motion of an object [TRUE or FALSE]

True

400

Stored energy is what kind of energy?

Potential Energy

500
This is a force between two surfaces rubbing against each other. It works against the motion of an object.
What is friction.
500
What two forces are acting together to keep a cup balanced on a table?
Gravity and the force of the table holding the cup up.
500
A car and a truck travel at the same speed on a road in the same direction. Both vehicles slow down with the same stopping force. Why does the truck need more distance the the car to stop?
The truck has more mass.
500
Which type of force moves an object toward the source of the force?
Pull
500
Some students apply force to a toy car on a ramp to push it down. The students measure how fast the car rolls down the ramp. If students want to increase the speed of the car down the ramp, what should they do?
Increase the force applied to the car.