Question

which sentence is an example of how a scientist might use a model?

○ a stopwatch is used to time the rate of a chemical reaction.

○ a microscope is used to magnify a group of cells on a slide.

○ a wrench is used to tighten a nut onto a piece of wood.

○ the end of a slinky is moved vertically up and down to simulate a wave.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: A stopwatch is a tool for measuring time, not using a model.
• Option B: A microscope is a tool for magnification, not a model.
• Option C: A wrench is a tool for tightening, not a model.
• Option D: A slinky is used to simulate (model) a wave, which is how a scientist might use a model to represent a phenomenon.

Answer:

D. The end of a slinky is moved vertically up and down to simulate a wave.