4.3 Electricity / Magnets Review Homework

The area surrounding magnets where there is an attraction or a repulsion is called the:

• electrical field
• magnetic charge
• magnetic field
• electrical charge

Tags

NGSS.MS-PS2-5

Temporary magnets are called____________________

• Bar magnets because bar magnets can be turned on and off.
• Bar magnets because they cannot be turned on and off and cannot be demagnetized.
• Electromagnets because they cannot be demagnetized.
• Electromagnets because they are powered by electricity and can be demagnetized.

Opposite charges:

• attract
• repel
• create an electrical current
• create a magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Like charges:

• attract
• repel
• create an electrical current
• create a magnetic field

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

______________ electricity is a build up of electrons.

• Static electricity because this type of electricity is not moving electricity.
• Current electricity because this type of electricity is moving electricity.
• Current electricity because the charges are unbalanced.
• Static electricity because the electrons are moving through a conductor.

______________ electricity is the movement of electrons.

• Static electricity because this type of electricity is not moving electricity.
• Current electricity because this type of electricity is moving electricity.
• Current electricity because the charges are unbalanced.
• Static electricity because the electrons are moving through a conductor.

An example of static electricity is:

• power lines
• lightning

An example of current electricity is:

• power lines
• lightning

_________________ are objects that stop electrons from flowing freely through them.

• Insulators
• Conductors

Tags

NGSS.MS-PS2-3

Insulator or Conductor?
RUBBER

• Insulator
• Conductor