1. Science The study of the natural world and its processes.

2. Safety Prevention against hurt, injury, or loss.

3. Safety Equipment Tools used to prevent against injury or loss.

4. Scientific Method A method of research where scientists test a problem and document their results.

5. Investigation A formal examination or research

6. Prediction A statement about something which may occur.

7. Matter Anything that has mass and takes up space.

8. Magnetism Attracted to a magnet because it contains iron.

9. Mass Amount of matter in an object.

10. Physical State The classification of matter as a solid, liquid, or gas.

11. Thermal Energy Energy that causes a change in temperature between substances.

12. Inference An explanation based on what you already know or what you have seen.

13. Relative Density Objects that are more dense sink in water, less dense objects float in water.

14. Solubility Measurement of the ability for some types of matter to dissolve in a liquid.

15. Dissolve To break down and spread out evenly in a liquid.

16. Mixture A combination of two or more substances where each keeps its own properties and can be easily separated.

17. Electrical Energy Energy produced by the movement of electrons.

18. Conductor Material that allows electric current or heat energy to flow through easily.

19. Insulator Material that slows down or stops electric current or heat from flowing.

20. Energy

21. Mechanical Energy

22. Light Energy

23. Sound Energy

24. Alternative Energy Resource Energy generated by natural processes that is renewable.

25. Wind Energy Energy from moving air that turns the blades of a turbine to generate electricity.

26. Solar Energy Energy that comes from the Sun.

27. Bio Fuel / Biomass Fuel made from plants, animal wastes, and decomposing plant and animal tissue.

28. Renewable Resource Materials from the Earth that can be replaced by nature in a short period of time; for example trees.

29. Nonrenewable Resource Materials from the Earth that cannot be replaced within a reasonable amount of time; for example, coal, oil, and natural gas.

30. Fossil Fuel A flammable material made from the waste and remains of plants and animals in the Earth’s crust that is used to produce heat and power.

31. Hydroelectricity Electricity made from the energy of moving or falling water.

32. Geothermal Energy that comes from the natural heat inside the earth.

33. Electric Circuit The pathway through which electrical current flows.

34. Electromagnetism Magnetism created by an electric current; examples are MRI and Electric motors.

35. Force A push or pull that causes an object to move, stop, or change directions.

36. Gravity A force that pulls objects toward the center of Earth.

37. Friction A force that slows or stops motion when objects rub together.

38. Inertia The property of an object that resists movement by a force.

39. Kinetic Energy Energy in motion

40. Potential Energy Energy that is stored

41. Illuminate To light up

42. Reflection Energy waves bouncing off the surface of an object. (mirrors or echoes return energy back to their source)

43. Refraction Energy waves that bend (change direction and speed) as they pass from one type of object to another type.

44. Organic Matter The waste and remains of plants and animals

45. Pressure The action of force by one object against another (in a geyser, hot water escapes the pressure from under layers of the earth’s crust)

46. Sedimentary Rock Rock made of layers of compressed organic and inorganic sediments.

47. Oil A flammable liquid produced from organic matter (remains of marine organisms) buried under layers of sediments for millions of years.

48. Natural Gas A flammable material with a definite form, produced from organic material (remains of marine organisms) buried under layers of sediments found near oil deposits.