Friction makes objects ______.

• speed up or fly

• slow down or break

• slow down or stop

• speed up or overheat

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More friction is caused by rubbing between two objects that are ____.

• hard

• soft

• smooth

• rough

Earth’s gravity pulls objects toward the center of the _____.

• universe

• solar system

• Earth

• moon

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The force of magnetism is ____.

• pushing only

• pulling only

• pushing and pulling

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The ends of a bar magnet are called _____.

• poles

• gears

• pulleys

• forces

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A force is made up of _____.

• a pull

• a push

• a push or a pull

• none of the above

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A force can cause an object to change _____.

• gravity

• direction

• friction

• color

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A boy accidentally knocks items off of his desk. He uses a magnet to pick up some of the items. Which item can he pick up with a magnet?

• a pencil

• a paperclip

• an eraser

• crayons

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The nail is attracted to the magnet, but the penny is not. What does this tell you about the nail and penny?

• The nail weighs less than the penny.

• A flat object is more magnetic than a round object.

• The nail and penny are made of the same material.

• The nail and penny are made of different materials.

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A girl found a box containing 2 magnets. One magnet has the north and south poles labeled. How can she identify the poles on the other magnet?

• stick both magnets together

• stick both magnets to a refrigerator

• check to see if aluminum foil sticks to both magnets

• check to see if paperclips stick to both magnets

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