Explore
Quiz: Efficiency Calculations and Improving Efficiency
AQA GCSE Combined Science specification.
Ready to start this lesson?
Sign in to track your progress. 11 steps including 9 interactive questions.
Sign In to Start Learning
Students also studied
Browse allSteps in this lesson (11)
You've already learned about energy stores, transfers, and power. Now let's test your understanding of efficiency calculations and how efficiency can be improved!
What is the formula for calculating efficiency?
Start the lesson to answer this multiple choice question
Which of the following are ways to improve efficiency? (Select all that apply)
Start the lesson to answer this multi-select question
Efficiency is expressed as a {{blank0}} because it compares useful energy output to total energy input.
Start the lesson to answer this fill in the blank question
Match the items on the left with their correct pairs on the right
Start the lesson to answer this matching question
If a light bulb has an efficiency of 80%, what happens to the other 20% of the energy?
Start the lesson to answer this multiple choice question
Match the items on the left with their correct pairs on the right
Start the lesson to answer this math equation question
Which of the following are examples of wasted energy? (Select all that apply)
Start the lesson to answer this multi-select question
A Sankey diagram shows {{blank0}} and wasted energy using arrows of different {{blank1}}.
Start the lesson to answer this fill in the blank question
Match the items on the left with their correct pairs on the right
Which of the following devices is designed to be highly efficient?
Start the lesson to answer this multiple choice question
Want to Learn More?
Get personalised lessons, quizzes, and instant feedback from your AI tutor.
Explore More Topics