Name:_________________Hr:_______ Date:____________Ver B. Safety, Scientific Method, Density and Metric Measurement 1. 2. a. b. c. d. How to you calculate density? Density divided by mass Volume divided by mass Volume divided density Mass divided by volume a. b. c. d. Calculate: Mass = 6.23 g 1.98 mL 6.90 mL 19.62 mL .51 mL Density = 3.15 g/mL 3. Calculate: Volume = 6 mL Density = 3.5 g/mL a. 1.71 g b. .58 g c. 9.5 g d. 21 g 4. a. b. c. d. Tells you what the graph is about. What am I? Data Scale Intervals Title a. b. c. d. This is found on the y-axis Independent variable Key Dependent variable Intervals 5. Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. Sponge Bob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better. 6. a. b. c. d. What is the independent variable? Dr.Kelp Seaweed Dr. Kelp and Seaweed Slimotosis a. b. c. d. What is the dependent variable? Slime and Odor Slime Odor Dr. Kelp 7. a. b. c. d. 9 cm3 27 cm3 3 cm3 24 cm3 9. If this box is 3 meters wide, 2 meters, tall, and 3 meters long what is the volume? a. b. c. d. 12. 9 m3 18 m3 8 m3 8 meters An object should float in a liquid if… a. It’s denser than the liquid b. It’s the same density as the liquid c. It’s less dense than the liquid a. b. c. d. a. b. c. d. 74.7 174.7 .7 70.7 180. 7 184.7 186.7 184.0 a. b. c. d. 16. . 524.4 525.1 552.5 525.4 13. 14. 15. Convert 10 cm to mm a. 1mm b. 1000mm c. 100mm d. 10mm 17. a. b. c. d. Convert 41 cm to mm 41 mm 0.41 mm 410 mm 4.1 mm 18. a. b. c. d. Convert 127 cm to m 12.7 m 1.27 m 127 m 0.127 m 19. a. b. c. d. Convert 625 m to km 0.625 km 6.25 km 6250 km 62.5 km 20. a. b. c. d. Convert 8.5m to mm 8500 mm 850 mm 85 mm 85000 mm 21. Convert 25000 m to km 250 25 2.5 .25 a. b. c. d. 22. Convert 2500 m to cm a. 25000 b. 250000 c. 2500000 d. 25000000 23. The group that does not get the independent variable and is used for comparing the results to is called the __________________ group. a. b. c. d. Control Independent Dependent Hypothesis 24. Why do scientists repeat experiments several times? a. b. c. d. 25. a. b. c. d. To To To To make sure their results are accurate change the variable each time use up all their materials memorize the procedures The variable that is measured in an experiment is known as .. Control Independent Dependent Hypothesis