Scientific Method: Parts of a Sci. Experiment

A possible explanation to a problem that has not yet been tested.

• fact

• data

• hypothesis

• theory

This variable in an experiment is the one that is being deliberately changed by the scientist.

• independent variable

• dependent variable

• control group

• data

What step does every scientific experiment start with?

• conclusion

• question/problem

• experiment procedure

• hypothesis

This part of the experiment serves as a basis of comparison; the one variable being tested is not in this group.

• experimental group

• control group

• data

• variables

The summary at the end of an experiment that explains the results.

• conclusion

• materials

• procedure

• dependent variable

A student wants to test the effects of exercise on heart rate. What is the dependent variable?

• amount of exercise

• time of day exercise occurs

• type of exercise

• heart rate

An experiment is performed on plants to see how different liquids affect plant growth. Each plant is given a different liquid: water, juice or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this experiment the independent variable is...

• the type of liquid

• the type of plant

• the amount of sunlight

• the type of music

Observations made during an experiment are called?

• conclusions

• data

• problems

• questions

An experiment is performed on plants to see how different liquids affect plant growth. Each plant is given a different liquid: water, juice or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this experiment what is the dependent variable?

• time of day

• plant growth

• water, milk and juice

• type of plant, soil, amount of sunlight and music

An experiment is performed on plants to see how different liquids affect plant growth. Each plant is given a different liquid: water, juice or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this experiment, what are the constants?

• plant growth

• time of day

• water, milk and juice

• type of plant, amount of soil/sunlight and same music