Question

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

Question 5 options:

Stopwatches measure the amount of time it takes for a swimmer to go one lap in the pool.


A saw is used to cut a board in half.


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


A telescope is used to see the moons orbiting Jupiter.

Answer 1

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

the marbles are not the protons nor is the hollow sphere the nucleus. Therefore, when the scientist does this, he is using a model. However the rest of the 3 options are the real things you use.