Question

. Which of the following is an example of how a scientist might use a model?

Marbles placed inside a hollow sphere are used to describe protons in a nucleus.

Microscopes are used to magnify a group of cells on sets of slides.

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

Stopwatches measure the amount of time it takes for runners to complete a mile

Answer 1

its A

Step-by-step explanation:

Answer 2

Answer: Marbles placed inside a hollow sphere are used to describe protons in a nucleus.

Models are artificial representations used to show some phenomena or features of the real world.

In this case, it has been used a sphere and marbles, to represent the fact that nuclei of atoms contain inside some smaller partilces which are the protons.