Review on unit 9

Which material allows electricity, heat, or sound to flow through it?

• Rubber

• Silver

• Wood

• Plastic

What do insulators do?

• Absorb heat quickly

• Do not allow current to flow through

• Hinder the flow of electrons

• Allow electricity to pass through

What is the main difference between conductors and insulators?

• Conductors allow current to flow, insulators don't

• Conductors have high resistance, insulators have low

• Conductors have high thermal conductivity, insulators have low

• Conductors store energy in a magnetic field, insulators don't

Which one is a conductor? 

• wood 
• iron 
• plastic spoon 
• paper 

Which of these objects is an insulator?

• Copper Wire
• Paper Clip
• Steel Pole
• Rubber Gloves

wood is a _____?

• conductor
• insulator

water is a______?

• conductor
• insulator

Which of these objects have transparent material?

• 
• 
• 
• 
• 

Which of these objects are opaque objects?

• cardboard box

• metal bar

• clear glass bottle

• clear glass mug

• wood plank

___________ material is a material that allow all light to pass through. ( Translucent / Transparent/ Opaque)