Year 9 Physics

3. The name of the scientist whose law is named after him. He studied the relationship between force and extension of springs.
7. The term for when two magnets of opposite poles move together
10. Also referred to as potential difference.
14. Energy sources that do not run out
15. This term describes a quantity that has a magnitude and a direction
17. The term for when two magnets push away from each other
19. Elastic materials store this kind of energy
20. The term to describe when an object has been stretched and it returns to its original length after any forces have been removed.
21. This is the unit of the quantity of electrical charge.
22. The end of a magnet is called this
23. Charge flow = current x ....
24. These flow around a circuit and is the electrical charge.
25. Speed = ........ divided by time
26. A gas that traps heat energy in the atmosphere, it is a greenhouse gas
28. A component of a circuit that slows down the flow of electricity
29. Two or more cells together is called this.
30. The word to describe how heavy an object is for its size
31. This type of non-renewable energy produces radioactive waste

1. The proper term for the size of a quantity
2. Density = mass divided by .......
4. The unit for this term is g or kg. It describes how much 'matter' (stuff) is in an object.
5. Objects have this type of energy when they are at a height
6. The term used for a quantity that only has a size and no direction
8. When force is x distance moved, this is calculated.
9. The apparatus that measures current
11. This type of energy source uses heat energy found naturally underground to heat water
12. The proper term for the energy an object has when it is moving
13. These are the three non-renewable energy sources that give off carbon dioxide when burnt.
16. An energy source that can be transferred into electricity without a turbine being needed
18. The spring constant of a spring can be worked out from the ........of a graph
27. Force = spring constant x .........