Quick answer: Energy is the ability to make things change, and it is measured in joules (J). This grade 6 science test on forms of energy has 8 questions worth 20 marks, to do in 45 minutes: naming forms, solar street lamp and conservation. The mark scheme is on a separate page; free printable PDF.
This test lasts 45 minutes and is worth 20 points. Show your working for calculations and give units. Write energy chains with arrows and name the forms of energy carefully. A calculator is allowed.
Level: Grade 6 science (Year 7 · Class 6) · Curriculum: MS-PS3
Question 1 Naming forms (2 marks)
Name the main form of energy stored in a gas cylinder, and the main form of energy of a cup of hot milk.Question 2 Solar street lamp (3 marks)
A solar street lamp stores energy during the day and shines at night. Write the energy chain for the day and the energy chain for the night.Question 3 Conservation (2 marks)
A football rolls to a stop on grass. State the law of conservation of energy and use it to explain where the kinetic energy went.Question 4 Diesel generator (4 marks)
The diagram shows the energy flow in a diesel generator.- Calculate the thermal energy output. (1 mark)
- Calculate the useful percentage. (1 mark)
- State what happens to the thermal energy. (1 mark)
- Suggest one way to reduce the wasted energy. (1 mark)
Question 5 LED torch (2 marks)
An LED torch takes in 12 J of electrical energy and gives out 9 J of light. Calculate its useful percentage.Question 6 Energy sources (3 marks)
Give two examples of renewable sources and two examples of non-renewable sources, and explain the difference between them.Question 7 Cooking choices (2 marks)
A family in rural Kenya can cook with charcoal or with a solar cooker. Give one advantage of each.Question 8 Campfire (2 marks)
Name the two main forms of energy given out by a burning log.
