Motion Commotion
Energy Zone
May the Force Be With You
Mass Matters
Crash! Bang! Collision!
Friction Frenzy
100
This word describes an object’s direction and speed.
Motion
100
The energy of motion.
kinetic energy
100
A force is this.
push or pull
100
The amount of matter in an object.
Mass
100
When two objects hit or come into contact, this happens.
A collision
100
This force opposes motion.
friction
200
A skateboarder turns left but keeps the same speed. What part of the skateboarder’s motion changed?
Direction
200
Stored energy because of an object’s position.
potential energy
200
The combination of all the forces acting on an object.
net force
200
Two identical boxes are pushed. One gets a small push and one gets a large push. Which has the greater change in motion?
The box with the larger force
200
During a collision, this can transfer from one object to another.
Energy
200
Which surface would usually have more friction? 
Rough carpet
300
A car goes from 20 mph to 40 mph. What changed?
speed
300
What kind of energy does the moving ball have?
kinetic
300
Are the forces balanced or unbalanced?
balanced
300
The same force is used on each. Which has the greater change in motion?
the tennis ball
300
What evidence shows that energy was transferred?
What evidence shows that energy was transferred? The pins begin moving/change motion.
300
More friction usually causes an object to travel a ______ distance.
shorter
400
Which one shows motion?
The kid riding the bike
400
Which type of energy is greatest because of its position? 
potential
400
Are the forces causing the change in motion balanced or unbalanced?
unbalanced
400
Same mass + greater force = ______ change in motion.
greater
400
A soccer ball hits a wall and bounces backward. What changed about its motion?
Direction
400
A book slides across a desk and eventually stops. What force caused it to slow down?
friction
500
A skateboarder is moving straight at 5 mph. He turns left and speeds up to 8 mph. What two parts of his motion changed?
Direction and speed
500
A toy car is sitting at the top of a ramp. It is released and rolls down. Describe the energy change.
Potential energy changes to kinetic energy.
500
Two teams pull equally hard in opposite directions during tug-of-war and the rope does not move. What is the net force?
0
500
Two wagons get the same push. One is empty and one is filled with books. Which wagon will have the smaller change in motion, and why?
The full wagon because it has more mass.
500
A fast toy car and a slow toy car each hit an identical stationary car. Which collision will probably cause the greater change in motion?
The faster car’s collision
500
Which would probably have more friction with the ground? 
The Hiking boot