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Energy Efficeny

Froggy Jumps

Energy efficency quiz

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Froggy Jumps

Energy EfficenyOnline version

Energy efficency quiz

by Luke Chaser
1

What is energy efficiency?

2

Which of the following is the correct formula for efficiency?

3

A machine receives 1000 J of energy and produces 400 J of useful energy. What is its efficiency?

4

What is the main reason energy is lost in machines?

5

5. Which form of energy is most commonly wasted in machines?

6

6. Why does a ball not bounce back to its original height?

7

Which of the following is the MOST energy-efficient transport?