Balancing Forces Unit Review

These two men are trying to move this box across the room. Will their strategy work? Why or why not?

• It will work because they are both pushing.

• It will work because two men pushing will make the box light.

• It will not work because they are pushing against each other.

• It will not work because one is pushing and one is pulling.

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Will this man be able to push this car very far alone, or will he need help?

• He will be able to push it very far. It is a small car.

• He is pushing the car.

• He will not be able to push the car very far alone. The car is too heavy. The forces are unbalanced.

• He will not be able to push it very far, because the car is pushing back.

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What will happen to the girl in the pink shirt if the boy in the green shirt pulls harder than her?

• The boy will fall because he pulls too hard.

• The girl will go backwards because of his push.

• The girl will go forward because his force is stronger than hers.

• The girl will fall because she doesn't know how to skate.

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Which kind of force is happening in this picture?

• balanced force

• unbalanced force

• magnetic force

• non touching force

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A _________________ is a push or pull.

• swing

• force

• gravity

• train

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To _____________ is to pull on an object, even without touching.

• repel

• attract

• evidence

• observe

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______________ is a push or pull.

• evidence

• diagram

• force

• gravity

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To cause a force to act on an object is to

• diagram

• investigate

• magnet

• exert

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An ___________________________ happens when multiple forces of unequal strength act on an object.

• touching force

• engineering

• unbalanced force

• analysis

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Which force keeps all objects on the ground?

• gravity

• friction

• pulling

• magnetism

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