Chapters 14 & 15 Review

How is heat transferred from a bonfire to people's hands to warm them up?

• Conduction

• Insulation

• Convection

• Radiation

Which of the following would show convection?

• The sun warms your skin

• You rub your hands together

• A metal spoon in soup becomes warm

• Warm air moving upward in a hot air balloon

What type of energy is formed when heating an object?

• Light energy

• Sound energy

• Thermal energy

• Electrical energy

What type of energy does a kid sitting at the top of a slide have?

• Electrical

• Kinetic

• Thermal

• Potential

Pick the materials that are conductors of electricity. (There will be more than one answer)

• Copper

• Wood

• Plastic

• Gold

A washing machine is an example of transforming

• Electrical into mechanical energy

• Mechanical energy into electrical energy

• Electricity into light

• Heat into motion

Which statement best describes the transformation of energy when you turn on a radio?

• Energy of motion to sound energy

• Electrical energy into sound energy

• Sound energy into electrical energy

• Light energy into electrical energy

When a power source HAS a current, all electrons move _______

• In the same direction

• In opposite directions

• In random directions

• To the right

A resistor ________ the flow of an electric current.

• Moves the current easily

• Charges

• Prevents

• Encourages

A(n) can completely stop MOST electrical currents.

• Conductor

• Resistor

• Insulator

• Current