Electrical to Sound Energy Practice Exercise 2

Question 1

A school’s electric bell rings but makes no sound. The striker moves back and forth rapidly. What part of the energy transformation is failing?

Question 2

A school’s electric bell rings but makes no sound. The striker moves back and forth rapidly. What part of the energy transformation is failing? (1mark)

Question 3

At a science fair, James is asked, “What energy transformation happens in a public address (PA) system?”

Question 4

At a science fair, James is asked to explain the energy transformation that occurs in a public address (PA) system. If you were James, how would you describe the energy transformation process that takes place when someone speaks into the microphone and sound is heard through the speakers? (1 mark)

Question 5

At a science fair, James is asked to explain the energy transformation that occurs in a public address (PA) system. If you were James, how would you describe the energy transformation process that takes place when someone speaks into the microphone and sound is heard through the speakers? (1 mark)

Question 6

At a science fair, James is asked to explain the energy transformation that occurs in a public address (PA) system. If you were James, how would you describe the energy transformation process that takes place when someone speaks into the microphone and sound is heard through the speakers? (1 mark)

Question 7

In class, the teacher plays a video on a laptop. Mercy says the laptop speakers change electrical to sound energy. Kevin says they change electrical to mechanical to sound energy. Who is correct?

Question 8

In class, the teacher plays a video on a laptop. Mercy says the laptop speakers change electrical to sound energy. Kevin says they change electrical to mechanical to sound energy. Who is correct? (1 mark)

Question 9

In class, the teacher plays a video on a laptop. Mercy says the laptop speakers change electrical to sound energy. Kevin says they change electrical to mechanical to sound energy. Who is correct? (1 mark)

Question 10

In class, the teacher plays a video on a laptop. Mercy says the laptop speakers change electrical to sound energy. Kevin says they change electrical to mechanical to sound energy. Who is correct? (1 mark)

Question 11

In the diagram (battery → switch → buzzer), what is the role of the switch in the energy transformation?

Question 12

What is the role of the switch in the energy transformation of the set up below? (1 mark)

Question 13

What is the role of the switch in the energy transformation of the set up below? (1 mark)

Question 14

In the diagram, a circuit with a switch and a buzzer is powered by a battery. The buzzer works only when the switch is pressed. What is the main transformation taking place when the buzzer sounds?

Question 15

In the diagram below, a circuit with a switch and a buzzer is powered by a battery. The buzzer works only when the switch is pressed. What is the main transformation taking place when the buzzer sounds? (1 mark)

Question 16

In the diagram below, a circuit with a switch and a buzzer is powered by a battery. The buzzer works only when the switch is pressed. What is the main transformation taking place when the buzzer sounds? (1 mark)

Question 17

In the diagram below, a circuit with a switch and a buzzer is powered by a battery. The buzzer works only when the switch is pressed. What is the main transformation taking place when the buzzer sounds? (1 mark)

Question 18

Two students are debating: Aisha says an electric bell is an example of electrical to sound energy. Brian says it is electrical to mechanical to sound energy. Who is correct, and why?

Question 19

Two students are debating: Aisha says an electric bell is an example of electrical to sound energy. Brian says it is electrical to mechanical to sound energy. Who is correct, and why? (1 mark)

Question 20

Two students are debating: Aisha says an electric bell is an example of electrical to sound energy. Brian says it is electrical to mechanical to sound energy. Who is correct, and why? (1 mark)

Question 21

Two students are debating: Aisha says an electric bell is an example of electrical to sound energy. Brian says it is electrical to mechanical to sound energy. Who is correct, and why? (1 mark)

Question 22

Which component in a radio converts electrical energy into sound waves?

Question 23

Which component in a radio converts electrical energy into sound waves? (1 mark)

Question 24

Which component in a radio converts electrical energy into sound waves? (1 mark)

Question 25

Which component in a radio converts electrical energy into sound waves? (1 mark)

Question 26

Which device directly converts electrical energy into sound energy without mechanical movement?

Question 27

Which device directly converts electrical energy into sound energy without mechanical movement? (1 mark)

Question 28

Which device directly converts electrical energy into sound energy without mechanical movement? (1 mark)

Question 29

Which device directly converts electrical energy into sound energy without mechanical movement? (1 mark)

Question 30

Which step happens first in an electric bell when current flows?

Question 31

Which step happens first in an electric bell when current flows? (1 mark)

Question 32

Which step happens first in an electric bell when current flows? (1 mark)

Question 33

Which step happens first in an electric bell when current flows? (1 mark)

Question 34

Why does a siren get louder when the electrical supply increases?

Question 35

Why does a siren get louder when the electrical supply increases? (1 mark)

Question 36

Why does a siren get louder when the electrical supply increases? (1 mark)

Quiz Questions (36 questions)