Show:
Vocabulary
Forces
Changes in Motion
Motion
100

What is the force that opposes motion? 

Friction

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
Alix is playing with a soccer ball at the top of a hill. Alix kicks the ball and it rolls down the hill. What happens as the ball rolls?
The force of gravity pulls the ball downhill.
200

What is a force? 

A push or a pull

200

A toy car was rolling across the floor and eventual stopped. What force cause the car to stop moving? 

Friction

200
Explain why a parachute makes a person falling from a great height fall more slowly?
The parachute causes air resistance, which slows the fall.
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.
300

What is the total combined force acting on an object? 

Net Force 

300
Explain why a person standing on the Moon can jump higher than a person standing on Earth.
The Moon's gravitational pull is less than Earth's.
300
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
400

What is the total amount of matter in an object? (hint: weight) 

Mass

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
Rodrigo and Marcus are moving a dresser. They are arguing about which direction to move it. Rodrigo is pushing the dresser with a force of 5 newtons towards Marcus. Marcus is pushing the dresser towards Rodrigo with a force of 10 newtons. What happens to the dresser?
The dresser moves towards Rodrigo.
500

What is the ability to do work? 

Energy

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