Forces and Energy Test Review

Students attached both ends of a long wire to the poles of a battery and wrapped the wire around a spoon and the spoon was able to pick up five paper clips. The students wrap more wire around the spoon and want to test if the strength of the magnetic force has increased. Which of the following observations would indicate that wrapping more wire has increased the strength of the electromagnet?

• the spoon picks up 3 paper clips

• the spoon picks up 7 paper clips

• the battery runs out of energy

• the ends of the wire touch the battery's poles

Tags

NGSS.MS-PS2-3

Where would the magnetic force be the strongest?

• At the ends

• In the middle

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Two balloons are given an electrostatic charge by rubbing them with a cloth. Which observation provides evidence that the balloons exert a force on each other even though they are not touching?

• Rubbing the cloth on the balloons more gives them more charge.

• Balloons 1 and 2 are pulled downwards by gravity.

• Moving balloon 1 towards balloon 2 causes balloon 2 to move away.

• The charge on the balloons gets weaker over time.

Tags

NGSS.MS-PS2-5

At which point on the roller coaster does the rider have the most potential energy?

• Point Z

• Point Y

• Point X

• Point W

Tags

NGSS.MS-PS3-2

A student creates a ramp by stacking four blocks and then leaning a meter stick against it. She releases four different balls (identified with mass in the table) from the same position on the ramp and calculates their speed and kinetic energy. Which ball would have the most kinetic energy?

• the golf ball

• the tennis ball

• the baseball

• the softball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A graph showing the kinetic energy and speed of an object is shown below. Which of the following can be concluded from the data provided?

• speed does not affect KE

• as speed increases KE decreases

• as speed increases KE increases

Tags

NGSS.MS-PS3-1

A diver is standing on a platform that is 20 meters above the surface of a pool. What describes the transfer of energy that occurs during the dive.

• The diver has PE on the platform and the PE becomes KE as she hits the pool.

• The diver has KE on the platform and the PE becomes PE as she hits the pool.

• The diver has PE on the platform that turns into KE as she leaves the platform and it becomes PE again when she hits the pool.

• The diver has PE on the platform that turns into KE as she leaves the platform and reaches maximum KE when she hits the pool.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

The North pole of a magnet is facing the South pole of another magnet. Describe the interaction that will happen as the two magnets are moved towards each other.

• The two magnets will pull together.

• The two magnets will push apart.

• The two magnets will do nothing.

Tags

NGSS.MS-PS2-5

Which magnetic poles will repel each other?

• north and south

• north and north

Tags

NGSS.MS-PS2-3

Which of these is an energy of motion?

• kinetic energy

• potential energy

• nuclear energy

• elastic energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5