Big Idea 1 and 2 Assessment REVIEW (TEST)

Front

Conclusion about the effect of sunlight on plant growth based on an investigation with controlled variables (same species, soil, water).

Back

Plants receiving more hours of sunlight grow more.

Front

What is the student testing in this investigation?   1. Place 2 grams (g) of salt in 500 milliliters (mL) of water at room temperature. 2. Stir the salt and water together until the salt can no longer be seen. 3. Record the amount of time needed for the salt to dissolve completely. 4. Repeat steps 1-3 using hot water. 5. Repeat steps 1-3 using cold water.

Back

how temperature affects the time it takes for salt to dissolve in water

Front

What is Maria doing when she looks at objects using her telescope?

Back

making observations

Front

Which action describes a scientific experiment?

Back

Testing three different fertilizers on plants to see which one makes the plants grow the fastest

Front

Why is it important to have more than one trial in an experiment?

Back

It increases the reliability of the results.

Front

Which group in an experiment is used to compare with all other groups in the experiment?

Back

the control group

Front

Which statement is always true about all scientific investigations?

Back

All scientific investigations begin with a question.

Front

Which observation about stars is a personal opinion?

Back

Stars appear prettier in the winter.

Front

What is the difference between observations 2 and 4?

Back

Observation 2 is based on personal opinion, and 4 is based on testable evidence.

Front

What must be true for scientific results to be valid?

Back

The results must be based on evidence.