Chapter 8, Lesson 2 Check: How does electricity transfer energy?

Write the word next to the description it matches.

• filament

• friction

• resistor

a force that acts when two surfaces rub together

• filament

• friction

• resistor

an object that uses the energy in a circuit

• filament

• friction

• resistor

Tell if each statement is true or false. Explain your choice. 4. A violin transforms electrical energy into sound energy. This statement is ________ because ____________________________

• False, because a violin does not use electrical energy; it transforms mechanical energy into sound energy.

• True, because a violin uses electrical energy to produce sound.

• True, because a violin transforms light energy into sound energy.

• False, because a violin transforms chemical energy into sound energy.

Charges exit a circuit with less energy than they had when they entered the circuit. This statement is ________ because ____________________________

• True, because some energy is transformed into other forms such as heat or light as the charges move through the circuit.

• False, because charges gain energy as they move through the circuit.

• True, because energy is not conserved in electrical circuits.

• False, because charges do not lose any energy while moving through the circuit.

Describe how electrical energy is transformed in a clothes dryer.

• It is transformed into heat and mechanical energy.

• It is transformed into light energy only.

• It is transformed into sound energy only.

• It is transformed into chemical energy.