Quiz -Planning and Carrying out Investigations

What is the primary objective of a controlled experiment in scientific investigations?

• To observe natural phenomena without interference

• To introduce variables randomly and observe the outcomes

• To test specific hypotheses under controlled conditions

• To discuss scientific theories without empirical evidence

Tags

NGSS.MS-PS2-2

When participating in science, what should you do besides stating the goal of the investigation?

• Prepare a presentation

• Predict outcomes and make a plan for data collection

• Write a conclusion

• Summarize previous research

Tags

NGSS.MS-LS1-1

What is a variable in the context of laboratory experiments?

• A type of experiment

• A factor that remains unchanged throughout the experiment

• A factor that can be changed or controlled and measured

• The outcome of an experiment

Tags

NGSS.MS-PS2-2

What is the purpose of a controlled experiment?

• To test all variables at once

• To test one variable at a time to determine its effect

• To demonstrate known effects without testing

• To change the environment randomly

In a controlled experiment, if you wanted to find the best fertilizer for growing vegetables, what would you vary?

• The type of vegetables

• The amount of sunlight

• The type of fertilizer

• The watering schedule

What is the role of an independent variable in an experiment?

• It is the outcome that is measured at the end of an experiment.

• It is the variable that is kept constant throughout the experiment.

• It is the variable that is manipulated or changed by the person running the experiment.

• It is a variable that is not important to the experiment.

Tags

NGSS.MS-PS2-2

When conducting an experiment to test the effectiveness of different fertilizers, what would be an example of an independent variable?

• The type of plant being grown.

• The color of the plant's leaves.

• The height of the plant at the start of the experiment.

• The type of fertilizer used.

If you wanted to test which fertilizer leads to the best growth in your garden, how many types of fertilizers should you ideally test according to the lesson?

• One type

• Two or three types

• Four or five types

• More than five types

Tags

NGSS.MS-ETS1-1

NGSS.MS-LS1-5

What is the dependent variable in an experiment that tests which fertilizer works best for plant growth?

• The type of soil used

• The amount of water given

• The type of fertilizer used

• How much the plants grow

In a controlled experiment, what must remain the same to ensure accurate results?

• The dependent variables

• The controlled variables

• The experimental variables

• The hypothesis

Tags

NGSS.MS-PS2-2