Question

Assignment 02.07 Energy Conversions — Option 1

Read the story below. Look for examples of energy conversions as you read.

Music has the power to energize!

You're having a bad day! You just want a minute to yourself, so you walk to your room. You turn on the light. You see a ball sitting on the floor and give it a swift kick! You find that candy bar that you have been saving for a day like this and eat it. You sit on your bed, pick-up your MP3 player, put on the headphones and turn it on. You hear the first few notes of your new favorite song, and a smile spreads across your face. As the song plays, your foot starts to tap. Then you start to play the "air drums." Before you know it, you are dancing around your room. By the time the chorus starts, you are singing at the top of your lungs. All of this singing and dancing has made you really hot and sweaty, so you turn on the fan. The umbrella in the corner catches your eye and you grab it for the big guitar solo! The song comes to an end and you collapse on your bed. Then you think to yourself, "What was I mad about again?"



There are many examples of energy conversions/transformations in this story. Your task is to find examples of the 5 conversions listed below. An example has been done for you.

Sample Question: Find an example of mechanical energy being converted to thermal energy in the story. Answer: "All of this singing and dancing has made you really hot and sweaty" is an example of mechanical energy (singing and dancing) being converted to thermal energy (getting hot and sweaty).

1. Find an example of electrical energy being converted to light energy.
2. Find an example of potential energy being converted to kinetic/mechanical energy.
3. Find an example of chemical energy being converted to sound energy.
4. Find an example of electrical energy being converted to mechanical energy.
5. Find an example of chemical energy being converted to mechanical energy.

Answer 1

Step-by-step explanation:

Find an example of electrical energy being converted to light energy.

Answer: "You turn on the light" is an example of electrical energy being converted to light energy.

Find an example of potential energy being converted to kinetic/mechanical energy.

Answer: "You give it a swift kick" is an example of potential energy (the ball being at rest) being converted to kinetic/mechanical energy (the ball moving from the force of the kick).

Find an example of chemical energy being converted to sound energy.

Answer: "You put on the headphones and turn it on" is an example of chemical energy (stored energy in the batteries of the MP3 player) being converted to sound energy (the music being played through the headphones).

Find an example of electrical energy being converted to mechanical energy.

Answer: "You turn on the fan" is an example of electrical energy being converted to mechanical energy (the fan moving and circulating air).

Find an example of chemical energy being converted to mechanical energy.

Answer: "You eat it" is an example of chemical energy (stored energy in the candy bar) being converted to mechanical energy (the energy used to chew and swallow the candy bar).