Science 7-REVIEW

Which of the following is not a step in the scientific investigation?

• Identifying a problem

• Formulating a hypothesis

• Conducting an experiment

• Removing the independent variable

It is an activity performed by scientists to verify the hypothesis.

• Variable

• Experiment

• Observation

• Data collection

It is the appropriate use of the sense organs when doing investigations.

• Conclusion

• Control

• Hypothesis

• Observation

Before you conduct an experiment, which of the following steps should you do?

• Make observations.

• Write your conclusion.

• Collect and interpret data.

• Present results using tables and graphs.

Which of the following is not a quantitative data?

• The wavelength of the wave increased by 2 nm.

• The solids that formed in the containers are all yellow.

• The average height of the plants in the experiment is 0.45 m.

• Three milligrams of silver was collected from the sample.

It is a way of judging the value of a variable or a result of an experiment.

• Analyzing

• Applying

• Evaluating

• Inferring

An experiment is being done to determine how light affects the growth of small plants. One plant is placed in full sunlight, the second in a shaded area, and the third in an unlit closet. What is the independent variable in the experiment?

• type of plant

• growth of plant

• amount of sunlight

• length of experiment

Which of the following steps should be done in the experiment?

• Three varieties of zinnia plant must be used.

• Three different types of plants should be used.

• The plants must be planted in the same type of soil.

• Plants of different sizes should be planted in pots of the same size.

Which of the following could be a possible hypothesis?

• Plants grow differently in different conditions.

• The type of soil and amount of sunlight affect the growth of a plant.

• The size of a plant is directly influenced by the type of soil where it is planted.

• If a plant is in direct sunlight, it will grow taller than those plants given little or no sunlight.

Which of the following is held constant in the experiment?

• type of plant

• growth of plant

• weather condition

• amount of sunlight