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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?
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?
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?