4G Science 2nd 9wks Review

Which hockey puck has the most friction acting on it?

• A hockey puck that is hit by a stick and is now in the air.

• A hockey puck that is sliding on the ice.

• A hockey puck that is being dropped on the ice.

• A hockey puck that is sliding on a wooden board.

The illustration shows a golf ball rolling from left to right across the grass.

• draw an arrow from the grass to the ball, pointing to the right

• draw an arrow from the grass to the ball, pointing to the left

• draw an arrow from the ball to the grass, pointing down

• draw an arrow from the ball to the air, pointing up

Tags

NGSS.MS-PS2-2

The diagram shows a ball rolling across a table.

• friction between the ball and table

• gravity between the ball and Earth

• the contact force of the ball pushing on the table

• the magnetic force between the ball and table

Tags

NGSS.MS-PS2-2

This is a photo of sandpaper. How can you investigate whether sandpaper applies more or less friction than ice?

• Sandpaper applies less friction than ice.
• Sandpaper and ice apply the same amount of friction.
• Ice applies more friction than sandpaper.
• Sandpaper applies more friction than ice.

Jamal and his friends play soccer every Saturday at the park. It rained last night, so the field is wet, but it is not soggy. Does the ball roll faster or slower than normal?

• slower
• bounces higher
• the same speed
• faster

Tags

NGSS.MS-PS2-2

) Each illustration shows a horseshoe magnet and an iron nail. In which one is the force of magnetism on the nail the strongest?

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Tags

NGSS.MS-PS2-5

A magnet can hold papers onto a refrigerator door. Which statement about the refrigerator door correctly explains what makes this possible?

• The door has magnets inside it.

• The door has a flat, smooth surface.

• The door is made of plastic or glass.

• The door is made of a magnetic metal.

Does a magnet need to touch a metal object to hold it?

• Yes, a magnet must touch a metal object to hold it.
• A magnet can only hold metal objects that are in direct contact.
• Magnets can only attract metal objects when they are heated up.
• No, a magnet does not need to touch a metal object to hold it.

Tags

NGSS.MS-PS2-5

The diagram shows a bar magnet and four points near it. At which point is the magnetic force the strongest?

• Point A

• Point B

• Point C

• Point D

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3

Zoe is investigating the forces between bar magnets. She draws the diagram shown here. This diagram shows bar magnets. She wants to add an arrow between the magnets to show the magnetic force. What is the best choice?

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Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3