The main idea of the passage is D: Electricity can be converted into light or sound energy.
Electricity can be converted into other forms of energy. In the video, we see examples of this. Light is a form of energy. In the first circuits shown in the video, electrical energy is converted into light energy, which lights the bulb. In the sister’s alarm system, electrical energy is converted into sound. She adds a switch to her door so that her brother will be completing a circuit when he comes in. The electricity will power a buzzer so that she can hear when her brother is trying to break in.
What is the main idea of this passage?
A
Light is a form of energy.
B
Electricity is energy.
C
Electricity can power a buzzer in an alarm.
D
Electricity can be converted into light or sound energy.
1 answer