Category #1
Pushing a box across the floor is....
a. magnetism
b. contact force
c. non-contact force
d. gravity
increase
If two LIKE poles of a magnet are pushed together, what will happen?
repel
When a rocket blasts off upward, the force of the fuel pushes downward. Which of Newton's laws explains this?
a. first
b. third
c. second
d. fourth
If four objects are rolling down a hill, would it take more force to stop the lightest object or the heaviest one?
heaviest
Force can...
a. only act when an object is already moving
b. only change an object's mass
c. change an object's motion
d. only make an object stop moving
change an object's motion
A toy car rolls on a tile floor and then stops when it reaches the carpet. What has happened?
friction increased on the carpet
What is the formula to calculate speed?
speed = distance/time
A ramp is a....
a. pulley
b. inclined plane
c. wheel and axle
d. lever
inclined plane
A boy walks for 10 minutes. He noticed that he traveled farther in the first 5 minutes than in the secon 5 minutes. What can we conclude about his walk?
His speed was faster in the first five minutes and then he slowed down.
A non-contact force is...
a. a child pulling a wagon
b. a hand pushing a door
c. a shoe rubbing against the floor
d. a magnet attracting a paper clip
magnet attracting paper clip
If a heavy box and an empty box are both pushed down a hill, which will accelerate faster due to its mass?
heavy box
(like the bowling ball and soccer ball*)
Two dogs walked the same distance. Dog A walked the distance in 6 seconds. Dog B walked the distance in 12 seconds. Which dog's speed was greater?
A doorknob is a...
a. wedge
b. screw
c. wheel and axle
d. inclined plan
wheel and axle
A student uses a rubber band to launch two items:
-eraser that weighs 2 grams
-rubber ball that weighs 10 grams
Due to the weight, which item would likely move the fastest?
eraser, less weight
A soccer player kicks a ball (that was still) to the right. What has happened?
a. gravity disappeared
b. a force caused a change in the ball's motion
c. the mass of the ball decreased
d. the position of the ball stayed the same
a force caused a change in the ball's motion
Which shows an example of friction being the most helpful?
a. friction slowing a rolling ball
b. friction on shoes to keep from slipping
c. friction slowing a sled down as it goes down a hill
d. friction making a bike harder to pedal
shoes to keep from slipping
a. friction
b. mass
c. acceleration
d. gravity
acceleration
What pattern of motion is swinging on a swing?
A book falls off the edge of a desk. What force is pulling the book toward the ground?
gravity
Which force pulls objects toward Earth?
Gravity
If a charged balloon is attracting bits of paper, what force is happening?
a. gravity
b. buoyancy
c. electricity
d. magnetism
A student records the position of a toy truck.
The positions are 4 meters, 8 meters, and 12 meters. Which conclusion is supported by the data?
a. the toy car is not moving
b. the car is changing direction
c. the car's speed is consistent
d. the car is moving backward
speed is consistent
Why would it take cars longer to stop on icy roads than on dry roads?
less friction between tires and road due to ice
A cat rides in a wagon down a hill. Eventually, the wagon comes to a stop.
What force is acting upon the wagon to slow it down?
friction