Unit 3 Science

Which part of the lamp system could be removed and the lamp still work?

• The lamp shade
• The electrical cord
• The light bulb
• The wall outlet

A boy went camping and packed his flashlight.  When it got dark, he tried to turn on the flashlight; however, it didn't work.  There are several reasons why it would not work. 
All of the following could be reasons the flashlight failed to work EXCEPT —

• There were no batteries in the flashlight.
• The lens protecting the light bulb.
• He didn't turn the switch from off to on.
• The flashlight batteries were old.

Which object is the best conductor of electricity

• A ceramic mug
• A plastic fork
• A penny
• A wooden craft stick

What form of energy is being used when a person pushes heavy boxes across the floor?

• Electrical energy
• Mechanical energy
• Heat energy
• Sound energy

Which statement is true about the picture above?

• The metal pan causes the water to boil. 
• The metal pan is a poor conductor of heat.
• The wooden handle is a good heat insulator. 
• The wooden handle is a good heat conductor.

Which form of energy makes the room brighter when a lamp is switched on?

• Sound energy 
• Electrical energy
• Chemical energy
• Light energy

Which form of energy makes the room brighter when a lamp is switched on?

• Sound energy 
• Electrical energy
• Chemical energy
• Light energy

Which form of energy is produced when a guitar string vibrates?

• Sound energy
• Electrical Energy
• Chemical Energy
• Light Energy

What best describes the conductors and insulators found in the electrical plug pictured below? 

• The metal posts are used to insulate electricity. 
• The plastic cover is used to conduct electricity. 
• The plastic and metal work together as conductors. 
• The plastic insulates electricity, and the metal conducts it. 

Which object is most likely to conduct electricity?

• Iron Nail
• Plastic Straw
• Wooden Stick
• Glass Lens