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6. what can travel through a vacuum?

  • conduction
  • radiation
  • convection

7. transverse waves oscillate..

  • perpendicular to direction of travel
  • parallel to direction of travel

8. How can you represent energy transformations?

  • Line graph
  • sankey diagrams
  • bar charts

9. longitudinal waves oscillate..

  • parallel to direction of travel
  • perpendicular to direction of travel

10. which matter has the most amount of energy?

  • liquid
  • gas
  • solid

11. what causes evaporation to happen quicker?

  • big temp, big surface area, draught
  • big temp, small surface area, draught
  • big temp, big surface area, no draught

12. where does convection occur?

  • gases
  • liquids and gases
  • liquids and solids
  • solids

13. the angle of incidence..

  • is smaller than angle of reflection
  • is equal to angle of reflection
  • is greater than angle of reflection

14. what u-value is best?

  • lower u-value
  • higher u-value

15. do electromagnetic waves all travel at different speeds in a vacuum?

  • no
  • yes

16. what happens when water gets hotter?

  • particles rise
  • area expands and rises
  • particles expand and rise

17. what do step up transformers do?

  • increase voltage and current
  • increase voltage
  • increase current
  • increase energy

18. a perspex block is..

  • same density
  • denser
  • less dense

19. what are images formed in a mirror?

  • virtual, upright
  • real, upright
  • virtual, diminished
  • real, diminished

20. Can energy be created or destroyed?

  • no
  • yes