EOCT Review Part 3

How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

Tags

NGSS.MS-PS2-3

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Like poles on a magnet

• attract
• repel

Tags

NGSS.3-PS2-3

What is a switch's function in a circuit?

• to make the current hotter or colder
• turn on and off the flow of current
• the pathway that current flows
• to add more power to the circuit

An electric motor changes electrical energy to _________ energy. 

• mechanical 
• chemical
• potential
• free

Tags

NGSS.MS-PS3-5

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

This kind of electricity is formed by the buildup of positive or negative charges on a surface.

• magnetism
• current electricity
• conductors
• static electricity

The fewer the number of coils, the less strength the electromagnet.

• True
• False

Electricity that flows in a closed path is called a

• path
• current
• circuit

The flow of electricity in a circuit-

• current
• flow
• circuit