Science Research 7 Q2-Review Quiz

What is an independent variable in an experiment?

• The variable that changes or is manipulated by the researcher

• The variable being measured or observed

• The variable that remains constant

• The variable that acts as a baseline

What is the dependent variable in an experiment?

• The variable being measured or observed

• The variable that changes because of the independent variable

• The variable kept constant throughout the experiment

• Both A and B

Which of the following best describes a constant variable?

• A variable that is kept the same for all groups in an experiment

• The variable that changes during the experiment

• The variable that is measured for results

• The variable that is unrelated to the hypothesis

A researcher is testing the effect of different amounts of sunlight on plant growth. What is the independent variable?

• The type of plant

• The amount of sunlight

• The growth of the plant

• The amount of water

A researcher is testing the effect of different amounts of sunlight on plant growth, what is the dependent variable?

• The type of soil used

• The type of plant used

• The growth of the plant

• The amount of water

Which of these variables must remain constant in this experiment? "researcher is testing the effect of different amounts of sunlight on plant growth"

• The amount of sunlight

• The type of plant and soil used

• The growth of the plant

• The time of day

What is a negative linear relationship?

• Both variables decrease together

• As one variable increases, the other decreases

• One variable increases while the other stays constant

• The variables are unrelated

In a graph showing a positive relationship, the line will:

• Slope downward

• Slope upward

• Be horizontal

• Be vertical

Which of these is an example of a positive relationship?

• The more you study, the better your grades

• The more you exercise, the less you weigh

• The less sunlight a plant gets, the slower it grows

• The more you work, the less free time you have

Which of these is an example of a negative relationship?

• The more you practice, the better you play

• The faster you drive, the less time it takes to reach your destination

• The more books you read, the more knowledge you gain

• The longer you stay in the sun, the darker your skin gets