Forces

Which of the following is NOT using a force?

• A man pushing a shopping cart

• A dog playing tug-of-war with rope

• A cat sleeping on the couch

• An eagle carrying a fish it caught

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Which object is in motion?

• A video of a car moving

• A ball rolling down the hill

• Bowling pins in a pyramid

• A potato on the table

Why does the moon revolve around Earth and not float away in space?

• Earth's gravitational pull

• The moon does not move

• The sun makes the moon spin around Earth

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(3) Balanced forces have either a push or pull that is __________.

• Equal

• Unequal

• Hard

• Easy

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(5) Using the pictures above, determine which picture represents a balanced force.

• Picture A

• Picture B

• Picture C

• Picture D

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(7) Which scenario is showing gravity as the main force moving an object?

• My pencil fell to the ground when I dropped it.

• A plane taking off.

• A feather floating in the wind.

• A boy threw a ball up in the air.

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(14) Which material, when placed under a book, would best prevent the book from sliding off a table that is raised on an incline?

• Glass plate

• Silver tray

• Poster board

• Rubber mat

(16) A ball has two forces acting on it. One force is pushing it to the left, and a larger force is pushing it to the right. In which direction will the ball move?

• Right

• Left

• Up

• Down

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Friction can be described as a:

• non-contact force
• contact force
• a changing of motion

• rough surface

Melissa and Gabe were testing the flight of leaves as they tossed them in the air.  The leaves would go up and then came to a rest on the ground.  What force made the leaves land on the ground?

• gravity
• friction
• air pressure
• mass

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