Electromagnetic Forces

Electromagnets use electricity to generate a magnetic field. They can be built using an iron nail, copper wire, and a battery.  Hayden tested the force of an electromagnet by measuring its ability to attract metal paper clips. She recorded her data in the table.

Use the data table to determine her independent variable (IV).

• number of coils around nail

• number of paperclips attracted

• type of power source

• size of iron nail

Tags

NGSS.MS-ETS1-1

Electromagnets use electricity to generate a magnetic field. They can be built using an iron nail, copper wire, and a battery.  Hayden tested the force of an electromagnet by measuring its ability to attract metal paper clips. She recorded her data in the table.

Use the data table to determine her dependent variable (DV).

• number of coils around nail

• number of paperclips attracted

• type of power source

• size of iron nail

Electromagnets use electricity to generate a magnetic field. They can be built using an iron nail, copper wire, and a battery.  Hayden tested the force of an electromagnet by measuring its ability to attract metal paper clips. She recorded her data in the table.

Use the data table to determine her two constants.

• number of coils around nail

• number of paperclips attracted

• type of power source

• size of iron nail

Tags

NGSS.MS-ETS1-1

Electromagnets use electricity to generate a magnetic field. They can be built using an iron nail, copper wire, and a battery.  Hayden tested the force of an electromagnet by measuring its ability to attract metal paper clips. She recorded their data in the table. Use the data table to select the research question tested by the student.

• How does the length of a nail affect the strength of an electromagnet?

• How does the number of coils affect battery power?

• How does the number of coils affect the strength of an electromagnet?

• How does the thickness of wire affect the strength of an electromagnet?

Tags

NGSS.MS-ETS1-1

Electromagnets use electricity to generate a magnetic field. They can be built using an iron nail, copper wire, and a battery.  Hayden tested the force of an electromagnet by measuring its ability to attract metal paper clips. She recorded their data in the table. Based on the data table, what conclusion could Hayden draw?

• Wire thickness does not affect electromagnet strength.

• The thinner wire creates a stronger electromagnet.

• The thicker wire creates a stronger electromagnet.

Tags

NGSS.MS-PS2-3

Hayden noticed that the electromagnet could pick up paperclips without touching them first. What best explains her observation?

• Electromagnetic forces can act at a distance.

• Electromagnetic forces are repulsive.

• New electrons were created.

• Paperclips have wings and can fly.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Victoria built a circuit and observed that a nearby compass started to point in a direction other than north. What best explains her observation?

• electrical energy was converted to mechanical energy

• a magnetic field was produced by the electric current

• radiant energy was produced by the light bulb

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Electromagnetism contributes to the operation of a generator in producing electricity, by converting ​ (a)   energy into usable ​ (b)   energy

• mechanical
• electrical
• radiant
• nuclear

Tags

NGSS.HS-PS3-3

All of the devices below function using electromagnets. Match the device name to its description.

• junkyard magnet

• use electricity to create a strong magnetic field, attracting and holding ferrous materials

• speaker

• utilize electromagnetism to convert electrical signals into sound

• MRI machine

• use electromagnets to convert electrical energy into physical movement

• motor

• medical device that uses strong magnetic fields and radio waves to create detailed images

A ​ (a)   produces an electrical current when a turbine is used to rotate an iron core wrapped with a coil of wire near a magnet.

• generator
• motor
• transformer

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS3-5