8th Unit 2 Electricity Magnetism & Waves

A material that transfers energy freely

• opaque

• conductor

• medium

• electric motor

Answer explanation

A conductor is a material that transfers energy freely, making it the correct choice in this context.

Tags

NGSS.MS-PS3-3

A material that reduces or prevents the transfer of energy

• generator

• insulator

• series circuit

• diverge

Answer explanation

An insulator is a material that reduces or prevents the transfer of energy, making it the correct choice in this context.

Tags

NGSS.MS-PS3-3

How do you calculate current

• Resistance X Voltage
• Voltage X Resistance
• Resistance ÷ Voltage
• Voltage ÷ Resistance

Electric charge at rest ("built up"); generally produced by friction or induction

• electromagnetic wave

• wavelength

• medium

• static electricity

Answer explanation

Electric charge at rest ('built up') is generally produced by friction or induction, which is known as static electricity.

A closed, or complete, path in which an electric current travels is an ___.

• electric circuit

• electric current

• electric charge

• static energy

The area of magnetic force around a magnet

• Magnet

• Repel

• North pole of magnet

• Magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens when you place two North poles next to each other?

• They repel

• They attract

• Nothing happens

• They explode

Tags

NGSS.MS-PS2-3

What happens to magnetic domain when a material is magnetized?

• They disappear

• They move randomly

• They align in the same direction

• They become weaker

Why do compasses point north?

• Earth's rotation

• Earth's magnetic field

• Earth's atmosphere

• Sun's gravitational pull

the interaction between electricity and magnetism

• mechanical wave

• electromagnetism

• ultrasound

• insulator

Answer explanation

The correct answer is electromagnetism because it refers to the interaction between electricity and magnetism.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5