Force - Electric, Magnetic, Gravitational

Isabella makes an electromagnet by wrapping copper wire around an iron bolt and then connecting each end of the wire to a battery. She observes that the more times that she wraps the copper wire around the bolt, the more paper clips her magnet can pick up. What does she conclude in this experiment?

• Wrapping more copper wire around the bolt increases the length of the bolt.

• Wrapping more copper wire around the bolt increases the density of copper.

• Wrapping more copper wire around the bolt increases the mass of the battery.

• Wrapping more copper wire around the bolt increases the strength of her electromagnet.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student creates an electromagnet and holds it near two paper clips. Paper clip Y is not attracted to the magnet. Which step should the student take to attract it?

• The student should use a battery with less energy.

• The student should wrap the coil fewer times around the nail.

• The student should use a smaller core in the magnet.

• The student should move the magnet closer to the paper clip.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?

• Attach wires to the ends of each magnet and measure the currents going through the wires.

• Measure how close each magnet can get to a metal object before picking it up.

• Put each magnet into a beaker of water to see how much water it displaces.

• Record the mass of each magnet by measuring it on a balance scale.

Seamus made an electromagnet from an iron nail, a piece of copper wire with three coils spread out across the nail, and a AAA-sized battery. His magnet attracts only one paper clip, and he wants to boost the power of his magnet to attract at least four paper clips. What two things can Seamus do to accomplish his goal?

• Seamus can add batteries to decrease the voltage, and he can decrease the space between the wire coils.

• Seamus can add batteries to increase the voltage, and he can decrease the space between the wire coils.

• Seamus can add batteries to increase the voltage, and he can increase the space between the wire coils.

• Seamus can add batteries to decrease the voltage, and he can increase the space between the wire coils.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Darwin is given an iron nail, a wooden pencil, a glass rod, a piece of copper wire, a 1.5-volt battery, and a 5-volt battery in order to make an electromagnet. Which combination of materials would allow Darwin to make the strongest electromagnet?

• iron nail, copper wire, 5-volt battery

• wooden pencil, copper wire, 5-volt battery

• iron nail, copper wire, 1.5-volt battery

• wooden pencil, copper wire, 1.5-volt battery

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS3-5

Jackson places a magnet at different distances from a pile of paper clips. He notices that the closer the magnet is, the more the paper clips are attracted to it. What can he conclude about the relationship between distance and the force of attraction between objects?

• The closer a magnet is to an object, the greater the force of attraction.

• The farther a magnet is from an object, the greater the force of repulsion

• The closer a magnet is to an object, the lesser the force of attraction.

• The farther a magnet is from an object, the greater the force of attraction.

Tags

NGSS.MS-PS2-5

In an investigation, what will most likely happen to the magnetic force between two objects if they are brought closer together?

• The magnetic force will increase.

• The magnetic force will stay constant.

• The magnetic force will decrease.

• The magnetic force will be destroyed.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student makes the claim that the space around a charged particle will exert a force on any other charged particle that is placed within this space. If an object is placed between two charged metal plates, one plate that is positively charged and one plate that is negatively charged, which argument BEST supports the student's claim?

• An object with a negative charge will remain stationary between the plates.

• An object with a positive charge will move toward the negative plate.

• A neutrally-charged object will move toward the negative plate.

• A neutrally-charged object will move toward the positive plate.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student holds two positively charged balloons near each other. She claims that magnetic forces exist between the balloons. What will happen that will support the student's claim?

• The balloons will remain steady.

• The balloons will repel each other.

• The balloons will become neutral.

• The balloons will attract each other.

Tags

NGSS.MS-PS2-5

A student claims that the gravitational force between two objects depends upon the mass of the objects and the distance between them. Which argument best supports the student's claim?

• If the distance between two objects increases, the gravitational force between the objects will decrease.

• If the distance between two objects increases, the gravitational force between the objects will increase.

• If the distance between two objects decreases, the gravitational force between the objects will disappear.

• If the distance between two objects decreases, the gravitational force between the objects will not change.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4