Question

practice it! select the statement(s) that are accurate examples of descriptive investigation. writing down the recipe for cookies as your friend makes and bakes them. testing the speed of different sized marbles as they roll down a ramp and records their time and average speed. a doctor monitoring his patient for 15 minutes after the patient takes a medication. recording the shapes of clouds as they pass the stoplight on your street. watching a squirrel in your front yard and recording its behavior for 5 minutes.

Explanation:

• Descriptive investigation involves observing and describing a phenomenon without manipulating variables or testing hypotheses.
• "Writing down the recipe for cookies as your friend makes and bakes them" is descriptive (observing the process).
• "A doctor monitoring his patient for 15 minutes after the patient takes a medication" is descriptive (observing patient's state).
• "Recording the shapes of clouds as they pass the stoplight on your street" is descriptive (observing cloud shapes).
• "Watching a squirrel in your front yard and recording its behavior for 5 minutes" is descriptive (observing squirrel behavior).
• "Testing the speed of different sized marbles..." involves testing (not just describing), so it's not descriptive.

Answer:

• Writing down the recipe for cookies as your friend makes and bakes them.
• A doctor monitoring his patient for 15 minutes after the patient takes a medication.
• Recording the shapes of clouds as they pass the stoplight on your street.
• Watching a squirrel in your front yard and recording its behavior for 5 minutes.