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Forces And Motion
Test Description: 4th Grade Physical Science
Instructions: Answer all questions to get your test result.
1) You are texting your friend about going to see a movie. You are using a force called a _____.
A
gravity
B
friction
C
pull
D
push
2) You pick up your Science folder from the classroom crate. You are using a force called a _____.
A
push
B
gravity
C
friction
D
pull
3) How are a push and a pull alike?
A
You are not allowed to use these forces in school.
B
They are both forces.
C
They both affect gravity.
D
They are not alike.
4) How are a push and a pull different?
A
They are not different.
B
A push moves an object away from you. A pull moves an object toward you.
C
They both affect gravity.
D
A push moves an object toward you. A pull moves an object away from you.
5) What is friction?
A
a force that slows or stops an object moving
B
a force that pulls objects toward Earth
C
a force that makes object hotter
D
a force that makes objects more slippery
6) The brake pads of a bicycle slow and stop it when applied. This is an example of which force?
A
gravity
B
push
C
friction
D
pull
7) Which has the least amount of friction?
A
a skateboard rolling on carpet
B
two ice cubes rubbed together
C
two hands clapping
D
two sheets of sandpaper rubbed together
8) Which of the following is one way to reduce friction?
A
do nothing to the two surfaces which are touching
B
add sand to the two surfaces which are touching
C
add oil to the two surfaces which are touching
D
add salt to the two surfaces which are touching
9) Do only solid objects cause friction?
A
Yes. Only solid objects can cause friction.
B
No. Solids, liquids and air can cause friction.
C
No. Only solids and liquids cause friction.
D
No. Only air causes friction.
10) Only a/an _____ will change an object's motion.
A
force
B
wish
C
experiment
D
observation
11) Gravity is _____.
A
a push
B
unnecessary
C
a friction
D
a pull
12) The moon has _____ gravity compared to Earth.
A
a weaker
B
the same
C
no
D
a stronger
13) What keeps Earth in orbit around the Sun?
A
magic
B
attraction
C
friction
D
gravity
14) Where can the force of Earth's gravity be seen?
A
only in outer space
B
only on Earth's surface
C
only in Earth's atmosphere
D
anywhere on or near Earth
15) You drop an egg from the top of a ladder. Which force affected how the egg fell?
A
gravity
B
friction
C
pull
D
push
16) You push a toy car twice across the floor the exact same distance. The first time it travels in 5 seconds. The second time it travels in 10 seconds. What can you conclude about your first push?
A
You used a weaker force.
B
Someone moved the finish line tape.
C
You used a stronger force.
D
There is no difference in the force you used.
17) At recess you go to the swings. You push your feet against the ground to start moving. Why did you need to push your feet against the ground?
A
You had to overcome the weight of the swing.
B
You had to overcome gravity.
C
You had to overcome air friction.
D
You had to overcome others who wanted the swing.
18) At recess you go to the swings. You push your feet against the ground to start moving. After several minutes, you drag your feet on the ground. How did this change your motion?
A
You drag your feet on the ground to cause more force which makes the swing go higher.
B
You drag your feet on the ground to cause more gravity which makes the swing heavier.
C
You drag your feet on the ground to reduce friction which keeps the swing moving.
D
You drag your feet on the ground to cause friction which stops the swing.
19) Give an example of an activity in which friction is useful.
A
walking
B
skiing
C
ice skating
D
bobsleding
20) Why does an airplane have a sleek shape?
A
to reduce the pull of gravity
B
to reduce the weight of the airplane
C
to reduce the number of people who will travel
D
to reduce friction with air
*select an answer for all questions
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