Across
- 2. water that falls to Earth from clouds
- 5. the stuff that every physical thing is made of
- 6. a material through which heat or electricity does not easily flow
- 12. the breakdown of rocks into very small particles by gravity, water, wind, and ice
- 13. a form of energy caused by the movement of electrons
- 17. the pathway through which electricity flows
- 18. the action of force by one object against another object
- 20. a material that allows heat or an electric current to flow through easily
- 22. a hill formed by wind blowing and depositing sand
- 24. whether something sinks or floats
- 25. materials that light cannot pass through
- 28. a triangular landform where a river empties into another body of water
- 29. the type of weather in an area averaged over a long period of time
- 30. a measure of how much matter an object or substance is made of
- 35. a force that resists the rubbing of two surfaces across one another
- 36. the remains of plants and animals
- 37. the weight of the air
- 40. energy that can be felt as heat
- 42. the process by which a liquid changes into a gas
- 45. the flow of electrical energy through a circuit
- 47. materials that transmit light
- 49. substance into which a solute is dissolved
- 50. the bending or redirection of light as it passes from one substance to another
- 51. a low area between higher areas or elevation
- 52. when sediments are packed tightly together
- 53. a form of energy that can travel from one place to another
- 54. the bouncing of light off the surface of an object
Down
- 1. the energy of position
- 3. the remains of creatures that lived long ago
- 4. the daily conditions in the atmosphere of a local area
- 7. energy that travels through matter
- 8. to predict
- 9. the buildup of land by the settlement of sediment and soil in a new location
- 10. the force that pulls objects toward the center of the Earth
- 11. the ability to do work
- 14. the energy that an object has because of its motion and position
- 15. a measure of how much water vapor is in the air
- 16. materials that light can pass through
- 19. a push or pull that causes an object to change speed or direction
- 21. how hot or cold the air is
- 23. bits of broken rock
- 26. substance dissolved into another substance
- 27. when light enters an object but does not pass through
- 31. solid, liquid, or gas
- 32. mild, moderate, not extreme
- 33. the energy of motion
- 34. a combination of two or more substances in which each keeps its own properties and both can be easily separated
- 38. a deep ravine between cliffs that is most often carved from the landscape by a river
- 39. the ability of a solid to dissolve in a liquid
- 41. the removal and movement of sediment from one place to another by gravity, water, wind, or ice
- 43. a liquid in which one substance is mixed evenly throughout another substance
- 44. energy that remains in plants and animals that die and become coal, oil, or natural gas
- 46. a source of energy
- 48. factories that convert certain forms of energy into electrical energy