Experimental Design

Front

Your teacher has asked you to perform an experiment to see if the shape of objects, alone, affects the motion of objects. Which of the following would be the best experiment to perform?

• Apply the same amount of force to a ball, cylinder, cube, and pyramid, each of the same mass.
• Apply the same amount of force to balls of different mass
• Apply the same amount of force to a ball, cylinder, cube, and pyramid, each of a different mass.
• Apply different amounts of force to the same ball.

Back

Apply the same amount of force to a ball, cylinder, cube, and pyramid, each of the same mass.

Front

In a controlled scientific experiment, a scientist...

Back

alters the test variable (independent variable) and observes the effects on the outcome variable (dependent variable).

Front

What is wrong with the steps of Corey's science experiment?

Back

He didn't measure the weight of the log before it was burned.

Front

Nick's experiment: Which group is the control group? Options: the green room, the music, flowerpot 2, flowerpot 1

Back

flowerpot 2

Front

What happens when more than one variable in an experiment is changed at a time?

Back

Cannot tell which change produced the results.

Front

What is the independent variable in Alex's flower growth experiment?

Back

The type of flowers

Front

What is the dependent variable in Alex's flower growth experiment?

Back

The growth of the flowers

Front

What is a testable question that Haley could be asking?

Back

Do radishes grown under bright light grow larger than radishes grown under dim light?

Front

What is a testable question that Lila could be asking?

Back

Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?