Question

can you match these key science terms with their definitions? drag the terms on the left to the appropriate blanks on the right to complete the sentences.

1. the type of test that changes only one variable at a time in order to isolate the results is known as a experiment.
2. the one variable that is manipulated by a scientist as a potential cause in an experiment is the variable.
3. the variable is the factor a scientist observes to see the effect of the change made.
4. a establishes a base line for an experiment.
5. a is a group in which no response is expected.
6. a is a group in which a known response is expected.
7. in a experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.
8. in a experiment, neither the participants nor the researchers know who receives the treatment and who does not.

terms: positive control, controlled, double - blind, negative control, control group, dependent, independent, single - blind

Explanation:

1. A controlled experiment changes one variable at a time to isolate results. So match "controlled" with this.
2. The independent variable is manipulated by the scientist as a potential cause. So match "independent" here.
3. The dependent variable is what the scientist observes (effect of the change). So match "dependent" here.
4. A control group establishes a baseline for comparison in an experiment. So match "control group" here.
5. A negative control group is where no response is expected. So match "negative control" here.
6. A positive control group is where a known response is expected. So match "positive control" here.
7. In a single - blind experiment, researchers (but not participants) know who gets treatment to reduce bias. So match "single - blind" here.
8. In a double - blind experiment, neither participants nor researchers know who gets treatment to eliminate bias. So match "double - blind" here.

Answer:

1. controlled
2. independent
3. dependent
4. control group
5. negative control
6. positive control
7. single - blind
8. double - blind