Force and Motion Review

A boy helped his neighbors pack their moving van. Which box would be the most difficult for him to carry?

• a box full of books
• a box full of pillows
• a box full of kitchen utensils
• a box full of stuffed animals

All of the following would be changes in motion EXCEPT -

• Going in a different direction
• Starting from a stopped position
• Slowing down
• Moving at a constant speed

A family went grocery shopping and split the shopping list to make the shopping go faster. Each person pushed their item in a shopping cart. Who had to use the least amount of force to push their cart?

• A girl went to get a box of cereal.
• Mom went to get a large bag of dog food.
• Dad went to get a case of bottled water.
• A boy went to get a gallon of milk.

A student was blindfolded and told to pick up a pillow, a brick, a feather, and an empty box. Which item did he most likely choose as having the largest mass?

• A pillow
• A brick
• A feather
• An empty box

According to the graph, which two surfaces have the least friction?

• glass and wood
• wood and tile
• glass and tile
• carpet and glass

A student made a track for a toy sled using 4 different materials. At which section of the track is friction most likely to cause the greatest resistance to the motion of the toy sled?

• Aluminum Foil
• Sandpaper
• Wax Paper
• Plastic Wrap

A boy rubs wax on his snowboard, so it will go down the mountain faster. Which science fact is he proving?

• Smooth, slippery items have more friction
• Smooth, slippery items have less friction
• Water freezes if the temperature is below 32 degrees
• Water freezes if the temperature is above 32 degrees

What changes the movement of an object by slowing it down?

• Inertia
• Motion
• Friction
• Direction

All moving objects have -

• Potential energy
• Kinetic energy
• Frictional force
• Electrical force

What kind of energy does an apple hanging on a tree limb have?

• Potential energy
• Kinetic energy
• Frictional force
• Electrical force