Period Date

Unit One: The Nature of Science Pre-TestShort Ansn'er

l. Sugardissolves in, ormixes completely with, water. The solubil i ty of a substance in waterisdetermined by measuring the maximum amount of the substance that dissolves in a given amount ofwater at a given temperature. Hypothesis: The solubil i ty of sugar in n'aler increases as thelemperature of the water decreases. Identify the independent variable and the dependent variable that

would use lo test this hypothesis

dependent variable

independent variable

2. Which laboratory tools would you need to carry out the experiment in question l?

3.

4.

A scientist performs a series of experiments to confirm an idea regarding cellular metabolism. Theresults of her experiment, support her initial idea, and after conferring with colleagues, shc discoversthat evidence frorn many experiments has supported the same idea. This idea now can be considereda(n)

To simplify the results of an experiment, many researchers hold al l variables constant except for one.They then compare t}re results with respect to that one variable. This g.pe of experiment is known asa(n)

5. List the four basic units of the International S)'stem of Measurement (SI) used in science.

a .

6. Describe the difference between uantitative data arrd itative data.

c .

d.

quantitat ive data

quali tat ive data

Uni t One: The Nature of Sc ience Pre- fest : Cont inued

Short Ansrver

7. Briefly describe several linritations of traditional scierltific rrrethodology'

8. What are rnodels?

9. How can models be used in science?

10. List four gepcral categories/cr i ter ia t |at l lake up t |c Nlt lure of Scicnce'

a.__

b .

c .

d .

I l. Explain the difference betq,cen an obsen'ation arrd :m irtference'