Forces And Motion: Question Preview (ID: 30662)


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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 stronger force. b) You used a weaker force. c) Someone moved the finish line tape. d) There is no difference in the force you used.
You drop an egg from the top of a ladder. Which force affected how the egg fell?
a) friction b) gravity c) pull d) push
What keeps Earth in orbit around the Sun?
a) friction b) attraction c) gravity d) magic
Where can the force of Earth's gravity be seen?
a) only on Earth's surface b) anywhere on or near Earth c) only in Earth's atmosphere d) only in outer space
Gravity is _____.
a) a friction b) a pull c) a push d) unnecessary
The moon has _____ gravity compared to Earth.
a) no b) the same c) a stronger d) a weaker
Only a/an _____ will change an object's motion.
a) force b) wish c) observation d) experiment
Do only solid objects cause friction?
a) Yes. Only solid objects can cause friction. b) No. Only solids and liquids cause friction. c) No. Only air causes friction. d) No. Solids, liquids and air can cause friction.
Which of the following is one way to reduce friction?
a) add sand to the two surfaces which are touching b) add salt to the two surfaces which are touching c) add oil to the two surfaces which are touching d) do nothing to the two surfaces which are touching
Which has the least amount of friction?
a) two sheets of sandpaper rubbed together b) a skateboard rolling on carpet c) two ice cubes rubbed together d) two hands clapping
The brake pads of a bicycle slow and stop it when applied. This is an example of which force?
a) friction b) gravity c) pull d) push
What is friction?
a) a force that slows or stops an object moving b) a force that makes objects more slippery c) a force that pulls objects toward Earth d) a force that makes object hotter
How are a push and a pull alike?
a) You are not allowed to use these forces in school. b) They are not alike. c) They are both forces. d) They both affect gravity.
How are a push and a pull different?
a) They are not different. b) A push moves an object toward you. A pull moves an object away from you. c) They both affect gravity. d) A push moves an object away from you. A pull moves an object toward you.
You are texting your friend about going to see a movie. You are using a force called a _____.
a) push b) pull c) friction d) gravity
You pick up your Science folder from the classroom crate. You are using a force called a _____.
a) friction b) gravity c) pull d) push
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 air friction. b) You had to overcome the weight of the swing. c) You had to overcome others who wanted the swing. d) You had to overcome gravity.
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 friction which stops the swing. c) You drag your feet on the ground to cause more gravity which makes the swing heavier. d) You drag your feet on the ground to reduce friction which keeps the swing moving.
Give an example of an activity in which friction is useful.
a) skiing b) walking c) ice skating d) bobsleding
Why does an airplane have a sleek shape?
a) to reduce the pull of gravity b) to reduce the number of people who will travel c) to reduce the weight of the airplane d) to reduce friction with air
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