Practice Transformation Of Energy (4.5) - Work, Energy and Power

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What do you understand by energy transformation?
Show hintHide hint
Think about different devices you use.
Question 2.
Give an example of energy transforming from one form to another.
Show hintHide hint
Consider how sunlight can power your home.
3Question 3.
What does energy transformation mean?
Show hintHide hint
Consider how your electronic devices function.
4Question 4.
True or False: The Law of Conservation of Energy states energy can be created.
- True
- False
Show hintHide hint
Think about natural and mechanical systems.
Question 5.
Design an energy-efficient home. Detail how various energy transformations occur throughout the house.
Show hintHide hint
Consider energy flows from production to consumption.
Question 6.
Calculate the efficiency of a device that transforms energy with a 70% energy transfer rate. If it starts with 100 Joules, how much usable energy is produced?
Show hintHide hint
Use the efficiency formula provided!

5 more questions in this section. Enroll free to practise them all.