CFA 2 Review

What design change would increase the magnetic field strength of the electromagnet?

• Remove the nail from within the coil

• Move the battery closer to the nail

• You cannot increase the magnetic field

• Increase the number of loops in the coil

Tags

NGSS.MS-PS2-3

What does the crane operator do to drop the scrap metal into the train car?

• The crane operator turns on a magnetic charge in the scrap metal

• The crane operator turns off an electric current in the electromagnet

• The crane operator sends out a signal that blocks the magnetic properties of the scrap metal

• The crane operator sends out a signal that causes the train car to become an electromagnet

Tags

NGSS.MS-PS2-3

Which conclusion is supported by the data obtained from the electromagnet experiment?

• The number of coils on an electromagnet does not matter and the strength of the magnetic field does not change

• The fewer coils an electromagnet has, the stronger the magnetic field

• The more coils an electromagnet has, the weaker the magnetic field

• The more coils an electromagnet has, the stronger the magnetic field

Tags

NGSS.MS-PS2-3

What is the best conclusion about the charges and forces represented in the image?

• Like charges attract

• Like charges repel and opposite charges attract

• Electric charges cannot create force

• Opposite charges repel

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the interaction between the magnets when the magnet on the right is moved toward the suspended magnet on the left?

• An attractive force between the two magnets causes the suspended magnet to oscillate like a pendulum

• A repulsive force between the two magnets causes the suspended magnet to oscillate like a pendulum

• An attractive force between the two magnets causes the suspended magnet to swing to the right

• A repulsive force between the two magnets causes the suspended magnet to swing to the left

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which picture best represents the charges of the particles on the balloon and the wall that cause the balloon to be attracted to the wall?

• B

• A

• D

• C

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which notes show that Carla’s bicycle is in motion?

• 2, 3, and 4

• 1, 2, and 5

• 1, 2, and 3

• 2, 3, and 5

In which trial will the car move toward the right?

• Trial 4

• Trial 1

• Trial 2

• Trial 3

Tags

NGSS.MS-PS2-2

Which boxes will move under these conditions?

• Blocks 1 and 2

• Blocks 2 and 3

• Blocks 1 and 3

• Blocks 1, 2, and 3

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the motion of the object represented in the diagram?

• The object will have downward motion

• The object will have upward motion

• The object will accelerate to the left

• The object will accelerate to the right

Tags

NGSS.MS-PS2-2