Consortium for Research and Evaluation of Advanced Technologies in Education

(CREATE)

New York University

Simulation Efficacy Study Fall 2008–NYC

PART B

  • Test of Graphing in Science
  • Chemistry Pre-Test

Print Student Name: ______
Teacher Name: ______

TEST OF GRAPHING IN SCIENCE

  1. Tom wanted to know how much fertilizer he should give his tomato plants. He gave different amounts of fertilizer to his plants. He then counted the number of tomatoes grown on each plant. His results are in the data table below.

Amount of FertilizerNumber of Tomatoes Produced

03

100 4

1506

2508

4508

Which set of axes below is the best to use for graphing his results?

Use the information below to answer questions 2-5.

Rose owns a flower shop. She gave different amounts of water to several plants each day. She measured the height of the plants after three weeks. The graph below shows the results.

  1. One plant was given 140ml of water daily for three weeks. What would be the expected height of this plant at that time?
  1. 11 cm
  2. 16 cm
  3. 20 cm
  4. 23 cm
  1. How much water was given each day to the plant that grew 10 cm tall?
  1. 120 ml
  2. 140 ml
  3. 160 ml
  4. 180 ml
  1. The following statements describe the relationship between the amount of water given and the height of the plant. What is the best description?
  1. As the amount of water increased to 120 ml, the height of the plants decreased. With amounts greater than 120 ml the height of the plants increased.
  2. Both the amount of water and the height of the plants increased up to 120 ml. Then they both decreased.
  3. As the amount of water increased to 120 ml the plant growth quickly increased. After 120 ml of water the plant growth increased more slowly.
  4. As the amount of water increased to 120 ml, the height of the plants increased. With amounts greater than 120 ml the height of the plants decreased.
  1. How tall would you expect plants to grow if given 250 ml of water each day?
  1. less than 5 cm
  2. 8 cm
  3. 10 cm
  4. more than 20 cm

Use the graph below to answer questions 6 & 7.

  1. What are the proper coordinates for point a?
  1. (9,12)
  2. (20, 12)
  3. (20, 8)
  4. (12,20)
  1. Which point is identified by the coordinates (15,8)?
  1. a
  2. b
  3. c.
  4. d.

Use the following information to answer questions 8 & 9.

Dick plans to study how well sunflowers grow in different size pots. The graphs below show four possible outcomes of his experiment.

Which graph is best described by the following statements?

  1. As the pot size increases, the plant height decreases.
  1. As the pot size increases, the plant height increases up to a certain pot size. With larger pots, plant height remains the same.
  1. Liz jogs 2 miles everyday. One day after running, she measures her pulse every two minutes. There are the results. Her pulse rate was 140 beats per minute 2 minutes after running. It was 115 beats per minute after 4 minutes. It was 105 beats per minute after 6 minutes. It was 90 beats per minute after 8 minutes. It was 75 beats per minute after 10 minutes.

Which of these graphs best shows her results?

  1. Eddie grew pumpkins. He found the average weight of ten pumpkins at different times after planting. His results are listed below.

Time After PlantingAverage Weight of Pumpkins

(weeks)(Kg)

------
2 0

7 0

9 1

12 9

19 22

Which of these graphs best describes his results?


Questions 12 – 15 refer to the following investigation.

Lynn measured the amount of gas needed to drive one km at different speeds. Her results are plotted below.

  1. How much gas (liters) was used to drive one km at 60 km per hour?
  1. .05
  2. .06
  3. .07
  4. .08
  1. Which of the following is the best description of the relationship shown on the graph?
  1. As the speed of the car increases, the amount of gas used also increases.
  2. As the speed of the car decreases, the amount of gas used increases.
  3. The amount of gas used increases as the speed of the car decreases.
  4. The amount of gas used decreases as the speed of the car increases.
  1. At 55 km per hour, how much gas (liters) would the car use?
  1. .04
  2. .05
  3. .06
  4. .07
  1. At 80 km per hour, how much gas (liters) would the car use?
  1. .06
  2. .07
  3. .08
  4. .09

CHEMISTRY PRE-TEST

This is a test of what you know about chemistry. Most of the following questions are taken from past versions of state-wide exams. Please answer all questions as best you can. Some of these questions may not yet have been covered in class, so it is fine if you don’t know an answer.

Please circle the correct answer and also tell us how confident you are about your answer.

1. The kinetic molecular theory assumes that the particles of an ideal gas

(1) are in random, constant, straight-line motion

(2) are arranged in a regular geometric pattern

(3) have strong attractive forces between them

(4) have collisions that result in the system losing energy

2.A sample of a gas is contained in a closed rigid cylinder. According to kinetic molecular theory, what occurs when the gas inside the cylinder is heated?

(1) The number of gas molecules increases.

(2) The number of collisions between gas molecules per unit time decreases.

(3) The average velocity of the gas molecules increases.

(4) The volume of the gas decreases.

3. Which term is defined as a measure of the average kinetic energy of the particles in a sample?

(1) temperature

(2) pressure

(3) thermal energy

(4) chemical energy

4. Which diagram best represents a gas in a closed container?

Continued on the following page

5. The balloon and the gas container below have the same volume and contain the same particles, and are at the same temperature, but they have different shapes.

a.How do the internal pressure of the balloon and the gas container compare?

(1) The pressure in the balloon and the gas container are the same.

(2) The pressure in the balloon is greater than the pressure in the gas
container.

(3) The pressure in the balloon is less than pressure in the gas container.

(4) The pressure at the top of the balloon is less than the pressure
at the top of the container.

b. Explain your answer. [2]

6. The diagram below shows the relative concentration of molecules inside and outside of a cell.

Which statement best describes the general direction of diffusion across the membrane of this cell?

(1) Glucose would diffuse into the cell.

(2) Protein would diffuse out of the cell.

(3) Carbon dioxide would diffuse out of the cell.

(4) Oxygen would diffuse into the cell.

Continued on the following page
7. Ammonia with a mass equal to 17 amu (atomic mass units) and hydrogen chloride with a mass of 36.5 amu diffuse in the tube shown. When the gases meet they produce a white cloud of ammonium chloride.

  1. Where in the tube (A, B, C or D) do you predict the white cloud will first appear?

ABCD

  1. Using the information provided, explain why you made that prediction. [2]

8. Which graph shows the temperature-pressure relationship expected for an ideal gas?

(1)(2)

(3)(4)

Continued on the following page
9.A gas sample is held at constant temperature in a closed system. The volume of the gas is changed, which causes the pressure of the gas to change. Volume and pressure data are shown in the table below.

Volume (mL) / Pressure (atm)
1200 / 0.5
600 / 1.0
300 / 2.0
150 / 4.0
100 / 6.0
  1. On the grid below:

-mark an appropriate scale on the axis labeled “Volume (mL)”

- label and mark an appropriate scale on the other axis. [1]

Volume (mL)

b. On the same grid, plot the data from the table. Circle and connect the points. [1]

c. Based on your graph, what is the pressure of the gas when the volume of the gas is 200 milliliters? [1]

Continued on the following page
10.A gas occupies a volume of 40.0 milliliters at 20°C. If the temperature is increased to 40ºC at constant pressure, the resulting volume will be equal to:

(1) 40.0 mL 40ºC(3) 40.0 mL 20ºC

20ºC40ºC

(2) 40.0 mL 293 K(4) 40.0 mL 313 K

313 K293 K

11.When a person goes scuba diving, air bubbles are released from the diver's tank.

a. Predict how the air bubbles of scuba divers change in size as they travel from deep water to the surface.

(1) The bubbles will get bigger.

(2) The bubbles will get smaller.

(3) The bubbles will stay the same size.

(4) Some bubbles will get bigger and some will get smaller.

b. Explain your prediction using terms such as pressure and volume. [2]

Continued on the following page
12.The graph below represents the uniform cooling of a sample of lauric acid starting as a liquid above the freezing point.

a.Which line segment (A-B, B-C, or C-D) represents a phase change? [1] ______

b.What is the melting point of lauric acid? [1] ______

c.At which point do the particles of lauric acid have the highest average kinetic energy? [1]

______

d.Name the phase change that takes place during this 10-minute cooling time. [1] ______

END

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