Question

foundations of biology - scientific method & graphing
do not write on test!!!

1. a scientist hypothesizes the temperature at which an alligators egg is incubated will determine whether the alligator will be male or female. the dependent variable is

a. the size of the baby alligators
b. the temperature
c. the incubator
d. the gender of the baby alligators

1. a scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. in this experiment the independent variable is

a. the temperature of the water
b. the amount of salt in the water
c. the water
d. the number of plants in the water

1. a scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. in this experiment the dependent variable is

a. the water
b. the amount of salt in the water
c. the temperature of the water
d. the number of plants in the water

1. all the things in an experiment that must be the same to make it valid are called

a. dependent variables
b. controlled experiments
c. controlled variables
d. independent variables

1. in science, a testable statement is called a/an

a. observation
b. hypothesis
c. question
d. conclusion

1. when you decide whether or not the data supports the original hypothesis, you are

a. forming a hypothesis
b. asking questions
c. drawing conclusions
d. making observations

1. in which step of the scientific method do we want to use graphs

a. making a hypothesis
b. retesting
c. asking questions
d. analyze data

1. the final part, a summary of results is the/a

a. conclusion
b. controlled experiment
c. question
d. analyze data

1. which of the following is important when creating a graph in science?

a. neatness
b. labels
c. all of these
d. titles

Explanation:

1. The dependent variable is what is measured/affected; here, gender depends on temperature.
2. The independent variable is the factor changed; salt amount is manipulated to test plant count.
3. The dependent variable is what is measured; plant count depends on salt amount.
4. Controlled variables are kept constant to ensure valid results.
5. A hypothesis is a testable statement in science.
6. Drawing conclusions involves judging if data supports the hypothesis.
7. Graphs are used to visualize and analyze collected data.
8. The conclusion is the final summary of an experiment's results.
9. Neatness, labels, and titles are all critical for clear scientific graphs.

Answer:

1. d. The gender of the baby alligators
2. b. The amount of salt in the water
3. d. The number of plants in the water
4. c. Controlled variables
5. b. Hypothesis
6. c. Drawing conclusions
7. d. Analyze data
8. a. Conclusion
9. c. All of these