Across
- 3. to stay on or near the surface of water or another liquid
- 6. a material that is usually shiny and conducts heat and electricity well
- 7. Tools that make difficult tasks easier by changing the direction of the force or the amount of force needed to do something.
- 8. a particular kind of matter
- 10. to combine together
- 12. a scientific rule that matter is neither created nor destroyed during a change
- 15. A simple machine that has a gently sloped surface so it can be used to move objects upwards with less force. Ramps are examples of this.
- 17. a force between surfaces
- 20. all components are not distributed evenly in the mixture
- 21. to mix completely into a liquid
- 23. a condition that must be met
- 25. a measure of how hot or cold something is
- 26. to push away
- 27. the ability to attract certain metals
- 31. a force between two objects that aren't touching
- 34. a complete and circular path around which electrical energy can flow
- 36. the ability to do work or change something
- 39. a noncontact force that pulls objects toward the center of Earth
- 40. a force between two touching objects
- 41. a movement up and down or back and forth
- 43. the boundary of a model
- 44. a device that produces electrical energy by chemical changes in the materials inside it
- 51. a material that slows or stops the flow of energy, such as electricity, heat, or sound
- 52. the flow of electrical energy
- 53. a characteristic of matter that can be observed and or measured
- 58. a form of energy that lets you see
- 59. procedures scientists and engineers follow to answer a question and make a claim
Down
- 1. a complete circuit in which electrical energy can flow
- 2. forms in which matter exists
- 4. form of energy that gives some things the power to work
- 5. a fact or situation that can be observed
- 9. a mixture of substances that are blended so completely that the mixture looks the same throughout
- 11. a material through which energy flows quickly
- 13. an object that can attract objects made of iron, cobalt, steel, and nickel
- 14. to break apart into pieces
- 16. anything that has mass and takes up space
- 18. A simple machine that gets thinner at one end that is used to split material such as wood. A knife is an example of this.
- 19. an incomplete circuit in which electrical energy cannot flow
- 22. a strong effect on something
- 24. to pull toward
- 27. the amount of material in an object
- 28. the area around a magnet where its force can attract or repel
- 29. a change in an object’s position
- 30. a wave that transfers energy through vibrating air or other matter
- 32. the movement of energy from one object to another
- 33. observing something for the first time
- 35. a new product, process, or idea
- 37. the ability to sink or float in water
- 38. a state of matter that does not have its own shape or definite volume
- 42. a characteristic of a model that is useful or helpful
- 45. a physical combination of two or more substances that are blended together without forming new substances
- 46. a state of matter that has a definite shape and volume
- 47. energy that is produced from heat
- 48. a push or pull
- 49. A plank that rests on something underneath and moves up and down. A seesaw is an example of this.
- 50. A wheel and rope that can change the direction of a force. A flagpole uses this to raise the flag.
- 54. all components are distributed evenly in the mixture
- 55. to go down below the surface of a liquid
- 56. a material that takes the shape of the container it is in
- 57. one of two ends of a magnet where the magnetic force is strongest