Grade 4 Unit 4
- 1.What type of force is gravity?
- A.
Twist
- B.
Pull
- C.
Turn
- D.
Push
- 2.When the space shuttle was developed, scientists had to figure out how to launch it into space. They used powerful rocket boosters to push it away from Earth. What forces were scientists trying to work against?
- A.
The push of gravity
- B.
The push of friction
- C.
No forces were involved
- D.
The pull of gravity
- 3.Students want to know what surface would be the easiest to ride their bicycle across. The students tested the following surfaces: sidewalk, sand, grass and gravel. What type of force are the students changing as their variable?
- A.
Friction
- B.
Gravity
- C.
Magnetism
- D.
Wind
- 4.The force that acts opposite of motion and slows things down is-
- A.
Gravity.
- B.
Magnetism.
- C.
Friction.
- D.
Speed.
- 5.
![Students make a model of a balance to test the effect of force on an object. If the white arrow represents a downward force that is greater than the mass of the box, the box will most likely-
- ProProfs]( "Students make a model of a balance to test the effect of force on an object. If the white arrow represents a downward force that is greater than the mass of the box, the box will most likely-")
Students make a model of a balance to test the effect of force on an object. If the white arrow represents a downward force that is greater than the mass of the box, the box will most likely-- A.
Move down.
- B.
Not move.
- C.
Move up.
- D.
Change shape.
- 6.
![The chart below shows the number of paperclips different magnets were able to lift. Which magnet had the greatest magnetic force?
- ProProfs]( "The chart below shows the number of paperclips different magnets were able to lift. Which magnet had the greatest magnetic force?")
The chart below shows the number of paperclips different magnets were able to lift. Which magnet had the greatest magnetic force?- A.
Magnet F
- B.
Magnet G
- C.
Magnet H
- D.
Magnet J
- 7.
![Students were testing on which surface their toy cars will travel the farthest. Why did Car B travel farther than Car A?
- ProProfs]( "Students were testing on which surface their toy cars will travel the farthest. Why did Car B travel farther than Car A?")
Students were testing on which surface their toy cars will travel the farthest. Why did Car B travel farther than Car A?- A.
Because smooth wood has less friction than sandpaper
- B.
Because smooth wood has more friction than sandpaper
- C.
Because sand paper provides no friction
- D.
Because smooth wood provides no friction
- 8.Which two tools below would be most useful in testing how the mass of an object can affect the distance it moves after being pushed?
- A.
Spring scale and hot plate
- B.
Balance and meter stick
- C.
Graduated cylinder and beaker
- D.
Magnet and thermometer
- 9.During an investigation, students repeated a test three times. Why is it a good practice to repeat an investigation?
- A.
To get more reliable information
- B.
To test different variables
- C.
To use different tools
- D.
To be sure the hypothesis is correct
- 10.Which of these is an example of the effect of gravity on an object?
- A.
Pushing a lawn mower
- B.
Attracting nails to a magnet
- C.
A pencil falling to the floor
- D.
Pedaling a bicycle
- 11.Think about your favorite sport. Explain how forces affect how that sport is played. Use your vocabulary words like gravity, friction, push, pull, and mechanical energy. RECORD YOUR ANSWER ON YOUR OWN PAPER.
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