24-25 1st Semester Exam-7th

Front

What should you do immediately if a laboratory fire erupts?

Back

Notify your instructor.

Front

When should approved eye protection devices be worn in the laboratory?

Back

Any time chemicals, heat, or glassware are used.

Front

In an experiment, what is the independent variable?

Back

The factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

In an experiment testing caffeine's effect on heart rate, what is the dependent variable?

Back

The heart rate of Daphnia.

Front

What is the experimental group in an experiment?

Back

The group that is exposed to the variable being tested.

Front

What is the control group in an experiment?

Back

The group that does not receive the experimental treatment and is used for comparison.

Front

What is the purpose of using a control group in an experiment?

Back

To provide a baseline to compare the results of the experimental group.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between two or more variables.

Front

What is the importance of safety goggles in a laboratory?

Back

To protect the eyes from harmful chemicals, heat, or glassware.