Question

which of the statements below accurately describes an experiment? select all that apply a carrying out an experiment is the only way to perform a scientific investigation. b an experiment is performed under controlled conditions. c carrying out an experiment generally tests the way in which one variable affects another. d an experiment can contribute important evidence that helps scientists better understand the natural world.

Explanation:

• Option a is incorrect as scientific investigations can also be done through observations, surveys etc.
• Option b is correct as experiments are typically carried out under controlled conditions to isolate variables.
• Option c is correct as experiments are designed to study the relationship between variables.
• Option d is correct as experimental evidence helps scientists understand the natural world.

Answer:

B. An experiment is performed under controlled conditions.
C. Carrying out an experiment generally tests the way in which one variable affects another.
D. An experiment can contribute important evidence that helps scientists better understand the natural world.