S8S5

What method is this student using to charge the balloon?

• friction

• repulsion

• induction

• conduction

Tags

NGSS.MS-PS2-3

Observe the photo of an electromagnet.

Electric current flows through the wire. What is the name for this coiled wire that is wrapped around the iron core of the electromagnet?

• generator

• solenoid

• transformer

• trapezoid

Tags

NGSS.MS-PS2-3

How does Earth’s magnetic field compare with that of a bar magnet?

• their magnetic fields increase with size

• the attractive force of the magnetic fields is greatest at the poles

• the attractive force of their magnetic fields is greatest at the center

• electric current causes them to lose magnetism

Using the image below, where is the magnetic field of this magnet the strongest?

• Position A

• Position B

• Position C

• Position D

Tags

NGSS.MS-PS2-3

Two neutrally charged balloons are touching. What will happen if a negatively charged rod is brought near one of the balloons without touching it?

• the balloons will move toward each other

• the balloons will move away from each other

• electrons on the balloons will move toward the rod

• electrons on the balloons will move away from the rod

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the diagrams shows the greatest gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A student claims that the magnetic fields are not the same across the magnet. Using the picture, what evidence best supports the claim?

• The magnetic fields of the magnet are strongest at both poles.

• The magnetic fields of the magnet are strongest at the north pole.

• The magnetic fields of the magnet are strongest at the south pole.

• The magnetic fields of the magnet are strongest at the middle

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Cameron and Morgan are each holding a bar magnet with opposite poles facing each other. They walk in opposite directions until they stop feeling their magnet pull towards the other one. What can they conclude about the distance between them when they stop feeling their magnets pull?

• They are outside the magnetic field of their magnets.

• The distance made the magnets' force stronger.

• The magnetic fields are far enough apart to change direction.

• The magnetic field was weaker when they were close.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student claims that Earth has a magnetic field. Which evidence would best support the student's claim?

• The student creates a working circuit that illuminates a bulb using wire and a battery.

• The student turns in all directions with a compass and the needle always points north.

• The student receives a shock after walking across the carpet and touching a doorknob.

• The student rolls a ball down a large hill and the ball comes to a complete stop at the bottom

Ivan has a magnet and four different objects. He places the magnet near each of the objects and records whether each object attracts, repels, or has no reaction. Which question is Ivan's experiment designed to answer?

• Which type of magnet will apply force on an object?

• How can magnetic force affect an object's shape?

• Which objects will respond to a magnetic force?

• How does an object's gravity affect a magnet?

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5