Let’s go through each question one by one and think about what the correct answer should be.
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Question 1: What pulls a ball back to earth?
When you throw a ball up, it comes back down. That’s because something is pulling it toward the ground. That “something” is called
gravity. Friction slows things down when they slide. Molecules are tiny parts of matter. Gas is like air — it doesn’t pull things down. So the right answer is
Gravity.
→ Answer:
B
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Question 2: If these boys are pulling with the same amount of force. What will happen?
This is a tug-of-war picture. If both boys pull equally hard in opposite directions, the rope won’t move. It’s balanced. So neither boy wins, and they don’t fall — they just stay still. The best answer is that
they will not move at all.
→ Answer:
D
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Question 3: The force that causes a ball to fall to the ground is _______________
Again, this is about why things fall. When you drop a ball, gravity pulls it down. Lubricant makes things slippery. Motion is movement itself, not the cause. Friction resists motion. So again, it’s
gravity.
→ Answer:
A
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Question 4: The measure of the force of gravity on your body is your _______________
Your weight is how heavy you feel — that’s actually the force of gravity pulling on you. Length and height are how tall or long you are. Age is how old you are. So the correct word here is
weight.
→ Answer:
A
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Question 5: A _______________ must be exerted on an object at rest to cause it to move.
If something isn’t moving, you need to push or pull it to make it start moving. That push or pull is called a
force. Inertia is the tendency to stay still or keep moving. Gravity pulls down. Weight is the force of gravity on you. So the answer is
force.
→ Answer:
A
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Question 6: A push or pull that causes an object to move, stop, or change direction.
That’s the definition of
force! Motion is the result, not the push/pull. Inertia is resistance to change. Energy is what lets forces do work. So the correct term is
force.
→ Answer:
A
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Final Answer:
1. B
2. D
3. A
4. A
5. A
6. A
Parent Tip: Review the logic above to help your child master the concept of force and motion worksheet for 4th grade.
