Name: __________________ Graphing and Analyzing Data Date: _______________

Base your answers to questions 1 and 2 on the graph below, which shows the water levels of oceantides measured in Boston, Massachusetts, for a 2-day period.

A) 3.5 hours B) 6.0 hours C) 12.5 hours D) 16.0 hours

1. The graph shows that high tides at Boston occur approximately every

A) It will occur about 3 a.m. with a 0.4-meter water level.B) It will occur about 6 a.m. with a 0.6-meter water level.C) It will occur about 9 p.m. with a 2.6-meter water level.D) It will occur about 10 p.m. with a 2.8-meter water level.

2. If the trends shown by the graph continue, which statement best describes the next low tide atBoston that is expected to occur on Wednesday?

Base your answers to questions 3 and 4 on the graph below, which shows the changes in relativehumidity and air temperature during a spring day in Washington, D.C.

A) 47% and 32°F B) 65% and 32°FC) 47% and 48°F D) 65% and 48°F

3. What were the relative humidity and air temperature at noon on this day?

A) Relative humidity decreases as air temperature decreases.B) Relative humidity decreases as air temperature increases.C) Relative humidity increases as air temperature increases.D) Relative humidity remains the same as air temperature decreases.

4. Which statement best describes the relationship between relative humidity and air temperature asshown by the graph?

A) 8 days B) 18 daysC) 24 days D) 32 days

5. The graph below shows the average number of dayseach year that thunderstorms occur at differentlatitudes on Earth.

According to the graph, what is the approximatenumber of days each year that thunderstorms occurat 40°N latitude?

A) 9° B) 5° C) 11° D) 18°

6. The graph below shows the temperature during aday in April.

The temperature change between 10 a.m. and 2 p.mwas approximately

A) 25°F B) 30°F C) 70°F D) 80°F

7. The graph below shows the average monthlytemperatures at one location on Earth over a threeyear period.

What was the highest recorded temperature?

A) B)

C) D)

8. A single protist was placed in a large test tube containing nutrient broth. The tube was then kept atroom temperature for 24 hours. Samples from the tube were observed periodically during the 24hours, using the low power of a compound light microscope. The data are summarized in the tablebelow.

Which graph best represents the data?

Base your answers to questions 9 and 10 on heinformation and data table below. The number of meadow mice in a certain grassyfield was determined each year from 1977 to 1989.The results are represented in the data table below.

A) 1977–1978 B) 1978–1979C) 1984–1985 D) 1986–1987

9. During which time period did the greatest change inthe size of the population of meadow mice takeplace?

A) 1977–1980 B) 1980–1983C) 1983–1986 D) 1986–1989

10. During which time period was the meadow mousepopulation most stable?

A) In 1939 a greater percentage of energy wasobtained from hydroelectric dams than in1989.

B) Fossil fuels made up a greater percentageof total energy use in 1939 than in 1989.

C) Coal represented a larger percentage of thetotal energy use in 1989 than in 1939.

D) The percentage of natural gas used hasdecreased over time.

11. According to the pie charts above, which of thefollowing statements is true?

12. Base your answer to the following question on the graph below. The graph shows the recordedchange in water level (ocean tides) at a coastal city in the northeastern United States during 1 day.

A) 12:30 a.m. B) 2:00 a.m. C) 3:15 a.m. D) 4:00 a.m.

According to the pattern shown on the graph, the next high tide will occur on the following day atapproximately

A) B) C) D)

13. The table below shows the number of algae thatexist after hours of living in an aquaticenvironment.

At this rate, how many algae will there be after 6hours?

14. Base your answer to the following question on the information and data table below.

One milliliter of a solution containing an even distribution of a species of bacterium was spreadon the surface of a nutrient medium in each of five culture dishes. The nutrient medium in eachdish was the same, except for pH. The dishes were then incubated at 37ºC for 24 hours. Thenumber of bacterial colonies in each dish was then counted, and the results are represented inthe data table below.

a) Give the graph an appropriate title

b) Label the X and Y axes

c) Create an appropriate numbered scale on each labeled axis

d) Plot the data on the grid. Surround each point with a small circle and connect the points

e) What is the independent variable in this experiment?___________________________________

f) What is the dependent variable in this experiment?_____________________________________

g) State a conclusion that relates the number of bacterial colonies to the pH of the nutrient onmedium.

15. Base your answer to the following question on the data table and information below and on yourknowledge of biology. The data table shows water temperatures at various depths in an ocean.

a) Give the graph an appropriate title

b) Label the X and Y axes

c) Create an appropriate numbered scale on each labeled axis

d) Plot the data on the grid. Surround each point with a small circle and connect the points

e) What is the independent variable in this experiment?____________________________________

f) What is the dependent variable in this experiment?______________________________________

g) The approximate water temperature at a depth of 125 meters would be approximately__________ degrees Celsius

h) State the general relationship between temperature and water depth

16. Base your answer to the following question on the table provided below.

a) On the grid provided, construct a bar graph of the average monthly temperatures provided abovefor climate region 5. January has been completed for you.

b) During which month(s) was the temperature the highest?________________________________

c) During which month(s) was the temperature the lowest?_________________________________

17. Base your answer to the following question on the information below and your knowledge ofbiology.

A science class was studying various human physical characteristics in an investigation for areport on human genetics. As part of the investigation, the students measured the arm span ofthe class members. The data table below summarizes the class results.

a) Mark an appropriate scale on the axis labeled "Number of Students."

b) Construct vertical bars to represent the data. Shade in each bar.

c) What should be done to provide additional support for the generalization that human arm span isa characteristic that falls within a range of lengths, with most lengths falling in the middle ranges?

Answer KeyScience 7: Graphing

1. C2. A3. C4. B5. B6. C7. D8. D9. B10. B11. B12. B13. D14.

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