Energy and Magnetism

Magnets have a north pole and a south pole. Which of the following is true of magnetic poles?

• north poles attract each other

• north poles repel each other

• north and south poles do not attract or repel each other

• south poles attract each other

Tags

NGSS.MS-PS2-3

Imagine you rub a rubber balloon on your head, and your hair stands up. How is rubber categorized, allowing this to happen?

• Rubber is a conductor and can be charged by contact.

• Rubber is a conductor and cannot be charged by contact

• Rubber is an insulator and can be charged by contact.

• Rubber is an insulator and cannot be charged by contact

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which diagram is a series circuit?

• diagram A is a series circuit

• both diagram A and diagram B are series circuits

• diagram B is a series circuit

• neither diagram A nor diagram B are series circuits

Which two factors will increase the strength of the electric force between two objects?

• The overall charge of both objects and a greater distance between them.

• The overall charge of both objects and a lesser distance between them.

• A lesser difference in charge of both objects and a greater distance between them.

• A lesser difference in charge of both objects and a lesser distance between them.

Tags

NGSS.MS-PS2-3

What will happen if Lamp 1 goes out in diagram A?

• lamp 2 will be unaffected

• lamp 2 will brighten

• lamp 2 will dim

• lamp 2 will go out

What materials do magnets attract?

• all dense materials

• all metals

• all metals that have properties like iron

• only other magnets

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

At which position is the gravitational potential energy of the ice cube the greatest?

• A. I

• B. II

• C. III

• D. IV

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NGSS.MS-PS2-4

NGSS.MS-PS3-2

If the broken wire of the top branch is connected, what will be true of the light-bulbs?

• All of the bulbs would be lit

• None of the bulbs would be lit.

• Only the top bulb would be lit.

• Only the top two bulbs would be lit.

When is the rocket's potential energy decreasing and its kinetic energy increasing?

• when the rocket's motor is burning and when the rocket is free falling

• when the rocket's motor is burning and when the rocket is ascending

• when the rocket is at the peak of flight, only

• when the rocket is free falling, only

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which paper clip has the least chance of moving toward the magnet?

• A. W

• B. X

• C. Y

• D. Z

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5