Starter quiz
- Which picture shows a bar chart?
- In an experiment, anything that could change (vary) between tests is called a ...
- 'variable' ✓
- Which option correctly describes what an experiment conclusion should contain?
- A conclusion should contain the practical steps needed to do an experiment.
- A conclusion should contain all the data collected in an experiment.
- A conclusion should contain what you found out and explain how you know.. ✓
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- Which kind of force does a lubricant reduce?
- gravitational forces
- drag forces
- friction forces ✓
- magnetic forces
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- Which one of these variables comes in different categories?
- length of fish
- mass of fish
- type of fish (species) ✓
- number of fish (population size)
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- Identify the possible benefits of lubricating moving parts of a system, to reduce the friction.
- Lubricated moving parts would be smoother and quieter. ✓
- Lubricated moving parts would be greasy to touch.
- Lubricated moving parts would wear down less over time. ✓
- Lubricated moving parts would need less force to keep moving. ✓
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