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Please draw a mind map about the lesson today, give one example for each kind of energy, and answer the below questions:
- Explain the following sentence. “The total amount of all the energy in the universe is constant.”
- Jim plugs in a toaster and it toasts his piece of bread. What happens to the energy in this example?

Sagot :

mickymike92

The statement means that energy is neither created nor destroyed but can change from one form to another.

When Jim plugs a toaster and it toasts his piece of bread, electrical energy is converted to heat energy in the toaster.

What is energy?

Energy is the ability to do work.

There are several kinds of energy, and they include:

  • Mechanical energy - such as moving vehicle
  • Sound energy - such a sound from a flute
  • Nuclear energy - such as in nuclear power plants
  • Heat energy - such as in a toaster
  • Electric energy - which is seen in electrical power plants

The statement that the total amount of all the energy in the universe is constant means that energy is neither created nor destroyed but can change from one form to another.

When Jim plugs a toaster and it toasts his piece of bread, electrical energy is converted to heat energy in the toaster which the toasts his bread. The energy has changed form but remains constant.

In conclusion, energy remains constant as it neither can be created nor destroyed though it may change form.

Learn more about energy at: https://brainly.com/question/19666326

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