QUESTION 1. Freezing water bursts pipes because a. Cold weakens pipes b. Water expands when it freezes c. Ice stops circulation of water d. Pipes rust QUESTION 2. Ohms measure a. Electricity b. Water power c. Rainfall d. Wind velocity QUESTION 3. Boiling water: Rising bubbles contain a. Water b. Oxygen c. Hydrogen d. Carbon dioxide QUESTION 4. a. b. c. d. QUESTION 5. a. b. c. d. QUESTION 6. a. b. c. d. QUESTION 7. a. b. c. d. QUESTION 8. a. b. c. d. QUESTION 9. a. b. c. d. QUESTION 10. a. b. c. d. QUESTION 11. a. b. c. d. QUESTION 12. a. b. c. d.