Electricity and Electromagnets

Which of the following are magnetic poles?

• North and South
• East and West
• Left and Right
• Red and Blue

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What do two unlike poles do when they are brought close together?

• Nothing
• Repel
• Attract
• Decrease

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The arrow on magnetic field lines shows them flowing in which direction?

• Left to Right
• North to South
• South to North
• Right to Left

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What do two unlike poles do when they are brought close together?

• Nothing
• Attract
• Repel
• Decrease

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is one difference between electromagnets and bar magnets?

• Bar magnets can be turned off but electromagnets cannot
• Electromagnets need electricity but bar magnets do not
• Bar magnets have a magnetic field but electromagnets do not
• Bar magnets are bigger than electromagnets

Tags

NGSS.MS-PS2-3

How can you reverse a magnetic field in a circuit?

• Connect the battery the other way around
• Use a different wire
• Increase the current
• Use a different battery

Tags

NGSS.MS-PS2-3

What does the following picture represent?

• An electromagnet
• A permanent magnet
• A generator
• A motor

Tags

NGSS.MS-PS2-3

What type of energy does a drawn bow and arrow have?

• Elastic potential
•  Motion kinetic
• Chemical potential
• Nuclear potential

Tags

NGSS.MS-PS3-2

Which of the following is a complete energy transformation for a flashlight? (Assume kinetic thermal in all transformations)

• Chemical energy > light energy
• Mechanical energy > electrical energy > light energy
• Chemical energy > electrical energy > light energy
• Chemical energy > electrical energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Which of the following represents a complete energy transformation for a ceiling fan? (Assume thermal kinetic occurs in all transformations.)

• Electrical kinetic energy > chemical potential energy
• Electrical kinetic energy > motion kinetic energy
• Mechanical energy > motion kinetic energy
• Chemical potential energy > electrical kinetic energy

Tags

NGSS.MS-PS3-5