Across
- 6. the unit used to measure electric current
- 8. a push or pull that tries to change the position or shape of an object
- 9. to put things in groups according their type
- 13. the amount of opposition to the flow of current
- 15. diagram drawing that shows the direction and size of forces acting on an object
- 18. the amount of force that pulls objects towards the Earth
- 20. when two forces acting on an object are equal and opposite
- 22. a force which tries to stop things sliding past one another
- 23. to divide or split something into different parts
- 24. a method to separate mixtures made of a solid and liquid using filter
- 26. the liquid in which a solute dissolves
- 28. measure of mass equal to 1000g
- 30. a cloudy mixture of insoluble solid particles in a liquid
- 32. a wetland is a place that is covered in shallow water most of the time
- 34. a sieve which lets through liquids and dissolved substances but nit insoluble substances
- 36. a material or piece of equipment with holes in it that will only allow substances of a certain size to go through the holes
- 37. can dissolve
- 41. a device to connect two wires together
- 45. cannot be changed back to what it was before
- 46. the unit used to measure weight
- 48. how fast something happens
- 49. to decide something is true after looking at all the evidence you have collected
Down
- 1. water that has been boiled and the steam has condensed to give pure water
- 2. to push or pull to create a force
- 3. the amount of matter in an object, measured in kilograms
- 4. forms by when two or more different substances mixed together but are not chemically joined
- 5. the material that is dissolved
- 7. water that contains no impurities such as salts
- 10. area the size of the outside part of an object
- 11. when a substance, often a solid, mixes with a liquid and becomes part of the liquid
- 12. a source of electrical energy that consists of more than one cell
- 14. the force that is put on something
- 16. the amount of energy transferred when a force makes an object move
- 17. diagram a picture of a circuit that uses symbols to represent components
- 19. when something has energy, it can make things move and cause things to change; all living things need energy to exist
- 21. a material that does not allow electricity to pass through it
- 25. to put a substance, such as oil, on a surface in order to reduce friction
- 27. circuit a circuit where the electricity only has one only path to flow along
- 29. a piece of equipment for measuring current, voltage and resistance
- 31. the overall force when two or more opposite forces are not in balance
- 33. Another name for air resistance
- 35. a mixture of one substance in another, where the dissolved substance can no longer be seen
- 38. electricity) a material that allows electricity to pass through it
- 39. resistance the force caused by air pushing against moving objects
- 40. the same throughout
- 42. the forces that pulls objects towards the Earth
- 43. a device for connecting an electric wire or cable to an electricity supply
- 44. when substances are mixed together and change chemically to form a new substance
- 45. cannot dissolve
- 47. forces when two or more forces acting in opposite directions on an object are not the same size