1. Density & Graphing Review Sheet Answers

2. Density
1. What is the formula used to calculate density? D = m V

3. Density
2. Give the unit used to measure the following: mass grams

4. Density
2. Give the unit used to measure the following: solid volume cm3

5. Density
2. Give the unit used to measure the following: liquid volume mL

6. Density
2. Give the unit used to measure the following: solid density g/cm3

7. Density
2. Give the unit used to measure the following: liquid density g/mL

8. Density
3. What is the density of a substance that has a volume of 12mL and a mass of 36g? D = m/V D = 36g / 12mL D = 3g/mL

9. Density
4. A cube is 3cm on each side and has a mass of 54 grams. a. What is the volume of the cube? V = L x W x H V = 3cm x 3cm x 3cm V = 27cm3

10. Density
4. A cube is 3cm on each side and has a mass of 54 grams. a. What is the density of the cube? D = m / V D = 54g / 27cm3 D = 2 g/cm3

11. Density
5. A marble is lowered into a graduated cylinder holding 10mL of water. After the marble is added, the water level line rises to 12 mL. The marble has a mass of 6g. a. What is the volume of the marble? V= 12mL – 10mL V = 2mL 1cm3 = 1mL So… V = 2cm3

12. Density
5. A marble is lowered into a graduated cylinder holding 10mL of water. After the marble is added, the water level line rises to 12 mL. The marble has a mass of 6g. a. What is the density of the marble? D = m / V D = 6g / 2cm3 D = 3 g/cm3

13. Density 6. Use the following chart to answer questions a-d.
Which substance is the least dense?
Rubbing Alcohol
SUBSTANCE
DENSITY
Ice
0.98 g/cm3
Water
1.00 g/mL
Rubbing Alcohol
0.85 g/mL

14. Density
6. Use the following chart to answer questions a-d. b. Which substance is the most dense? Water
SUBSTANCE
DENSITY
Ice
0.98 g/cm3
Water
1.00 g/mL
Rubbing Alcohol
0.85 g/mL

15. Density
6. Use the following chart to answer questions a-d. c. Would ice sink or float in water? Float because ice is less dense
SUBSTANCE
DENSITY
Ice
0.98 g/cm3
Water
1.00 g/mL
Rubbing Alcohol
0.85 g/mL

16. Density
6. Use the following chart to answer questions a-d. d. Would ice sink or float in rubbing alcohol? Sink because ice is more dense
SUBSTANCE
DENSITY
Ice
0.98 g/cm3
Water
1.00 g/mL
Rubbing Alcohol
0.85 g/mL

17. Graphing
1. Explain what type of information each of the following graphs would be used to represent: a. line graph Shows trends in how data changes over time

18. Graphing
1. Explain what type of information each of the following graphs would be used to represent: b. bar graph Compares information by counting

19. Graphing
1. Explain what type of information each of the following graphs would be used to represent: c. circle graph (pie chart) Shows the parts of a whole

20. Graphing
2. The ______________ variable is located on the X-axis. Independent

21. Graphing
3. The ______________ variable is located on the Y-axis. Dependent

22. Graphing
4. What 3 things are required on all graphs? Title, variables with units, data points

23. Graphing
5. Graph the following data and answer the questions below. Graph time on the X-axis and distance traveled on the Y-axis.
DISTANCE (m)
TIME (s)
4 m
2 s
6 m
3 s
9 m
4.5 s
12 m
6 s
15 m
7.5 s
18 m
9 s

25. Graphing
5. a. What type of graph did you make? Line Graph

26. Graphing
5. b. What variable is the independent variable? Time (s)

27. Graphing
5. c. What variable is the dependent variable? Distance (m)

28. Graphing
5. d. What is the distance traveled at 4s?

30. Graphing
5. d. What is the distance traveled at 4s? 8m

31. Graphing
5. e. How long do you predict it would take to go 20 meters?

33. Graphing
5. e. How long do you predict it would take to go 20 meters? 10s