Scientific Concepts

Name: ______Worksheet #

Class: ______Date: ______

Scientific Concepts

Matching: Match the description in the first column with the term in the second column by writing the correct letter in the space provided.

____1. Standard used to compare with the outcome of the test.
____2. Making sense of observations is known as:
____3. This type of graph is used for descriptive (types of things) data.
____4. A graph must have this so the scientist knows what data is being compared.
____5. Making prediction between two known points on a graph.
____6. Organized problem-solving procedures in science.
____7. An explanation of things or events based on many observations.
____8. The factor being tested in an experiment.
____9. A series of steps that is followed to test a hypothesis.
____10. Making a prediction beyond the known data on a graph. / A. Interpolation
B. Bar Graph
C. Variable
D. Scientific Method
E. Control
F. Extrapolation
G. Data Interpretation
H. Experiment
I. Theory
J. Title

Conversions: Complete the following metric conversions and tell what each unit measures.

1. 30.4 g =______cg / measures: ______
2. 480 l = ______hl / measures: ______
3. 5,200 mm = ______m / measures: ______
4. 7.89 g = ______mg / measures: ______
5. 0.0065 dkl = ______l / measures: ______
6. 0.89 km = ______cm / measures: ______

Graphing and Interpretation: You will be interpreting some historical data collected over the years about the size of mule deer population on the Kaibab Plateau in Arizona. You will do a complete interpretation, including making a graph, drawing conclusions, and making inferences.

Kaibab Plateau Deer Population, 1907 – 1938

1907 – 6,000 deer, 1910 – 10,000 deer, 1915 – 25,000 deer, 1920- 56,000 deer,

1923 – 100,000 deer, 1925 – 85,000 deer, 1930 – 30,000 deer,

1935 – 14,000 deer, 1938 – 9,000deer

A. Make a data table:

B. Graph the information:

C. Use the data to write the best possible conclusion in complete sentences. Make some inferences about your conclusion. Remember: An inference is an estimate about what you think happened base on your knowledge.

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D. You are probably curious about what happened to the Kaibab deer. Between 1907 and 1923, 300 coyotes and 600 mountain lions were killed by hunters on the Kaibab Plateau. Based on this additional information, what possible inferences can be made from the data available for the 1907 to 1923?

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Listing: List the 8 steps of the scientific method.

1. ______

2. ______6. ______

3. ______7. ______

4. ______8. ______

5. ______

Experimenting: Given below are details of an experiment. Read the experiment and look at the diagrams. Then answer the questions that follow.

Four jars were filled with pond water. Five drops of bromthymol blue were added to each jar. Bromthymol blue turns green in the presence of carbon dioxide. A snail was placed in jar 2. A piece of Elodea, a plant, was placed in jar 3. Both a snail and a piece of Elodea were placed in jar 4. All four jars were sealed with paraffin wax and placed in the light for two days. At the end of the two days, the water in jar 2 was green. The water in jar 3 was blue. The water in jar 4 was blue at the top and green at the bottom.

1. Give the experiment a title in the form of a question.

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2. What is a possible hypothesis for this experiment?

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3. Underline the sentences in the paragraph that describe the procedure.

4. Draw a box around the sentences that contain observations.

5. What purpose does jar 1 have in the experiment?

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6. What conclusion can you draw from the observations?

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