KS3 Unit 7c - Environment 1© NTScience.co.uk 2005

Pressure and Moments

KS3 Unit 7c - Environment 2© NTScience.co.uk 2005

Q1. What is the gaseous layer on a planet called?

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A1. Atmosphere

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Q2. What is the total force applied divided by the area on which it acts

called?

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A2. Pressure

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Q3. What is the gaseous mixture surrounding the

planet Earth called?

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A3. Air

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Q4. What are the Earth's oceans principally made

of?

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A4. Water

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Q5. What is the height of liquid in a container

called?

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A5. Depth

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Q6. What do you call something that prevents

the natural flow of a river?

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A6. Dam

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Q7. What is the SI unit of pressure - one newton

per square metre?

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A7. Pascal

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Q8. What is the opposite of an operation or action

called?

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A8. Inverse

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Q9. What do you call something that causes

an object to change speed or direction?

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A9. Force

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Q10. What is another word that means to

squash?

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A10. Compress

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Q11. Which word means totally resistant to being

squashed?

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A11. Incompressible

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Q12. What are tiny pieces of matter called?

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A12. Particles

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Q13. What is transmission of

compressive forces by a liquid called?

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A13. Hydraulics

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Q14. Which state of matter has particles

close together but can move easily past

eachother?

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A14. Liquid

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Q15. Which state of matter has particles far

apart and moving quickly

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A15. Gas

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Q16. Gases and liquids are both what?

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A16. Fluid

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Q17. What is the state of matter where particles are close together and

cannot move past eachother easily?

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A17. Solid

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Q18. What is the product of the applied force and

the perpendicular distance to the axis

called?

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A18. The moment

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Q19. What do you call a point about which

something turns - a lever for example?

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A19. Pivot

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Q20. What do you call a point about which

something turns - a seesaw for example?

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A20. Fulcrum

KS3 Unit 7c - Environment 42© NTScience.co.uk 2005

Well Done!Now check your score