3. * Which particles actually move to cause a buildup of charges? * a. protons * b. neutrons * c. electrons * d. atoms *Monday 1

4. * Why do water droplets form on the surface of a cold drinking glass? * Glass chemically changes into water. * Water vapor leaks through the glass. * Water droplets leak through the glass. * Water vapor condenses from the air.

5. * 3. A balloon and a cloth could help you investigate * a. static electricity * b. electric circuits * c. magnetism * d. electromagnets

6. What causes matter to change from one state to another? * increase or decrease in temperature * mixing it * changing it from one container to another * moving it from one place to another

7. * The state of matter in which the molecules vibrate very close together is * gas * plasma * solid * liquid

8. * Why is it important to have several trials for an investigation? * You can vary the procedure. * You can use different variables. * You can check to be sure your data are accurate. * You can estimate your data.

9. 1. How does heating affect particles of matter? * molecules move faster and farther apart * molecules get larger * molecules do not move at all * nothing changes Wednesday 1

10. * Which of the following describes the space taken up by an object? * A. volume * B. matter * C. mass D. length * Wednesday 2 *Wednesday 2

11. * 3. Which particle is negatively charged? Proton Neutron Electron Atom Wednesday 3

12. * Objects that stop the flow of electricity are good insulators. Which of the following materials would be the best insulator for an electrical wire? * a. copper wire * b. Water * c. plastic tubing

13. * Which of the following is a good conductor of electricity? * a. rubber * b. wood * c. cooper * d. Glass Thursday 2

14. * 3.Which item would conduct electricity? * a. plastic straw * b. a metal fork * c. a glass cup * d. a chicken feather Thursday 3