Which of the following is an example of how a scientist might use a model? Question 2 options: Stopwatches measure the amount of time it takes for a swimmer to go one lap in the pool. Marbles placed inside a hollow sphere are used to describe protons in a nucleus. A telescope is used to see the moons orbiting Jupiter. A saw is used to cut a board in half.

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16-08-2017
Biology

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Which of the following is an example of how a scientist might use a model? Question 2 options: Stopwatches measure the amount of time it takes for a swimmer to go one lap in the pool. Marbles placed inside a hollow sphere are used to describe protons in a nucleus. A telescope is used to see the moons orbiting Jupiter. A saw is used to cut a board in half.

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WorldCitizen WorldCitizen · Answer 1 · 2017-08-23T14:24:11+02:00

Three of the options have something in common: the scientists are using an instrument to measure or manipulate something:

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

A telescope is used to see the moons orbiting Jupiter.

A saw is used to cut a board in half.

here the stopwatch, telescope and a saw are uses as instruments.

in the remaining options, the marbles represent something, and a model is exactly that: a representation of an idea, so the correct answer is Marbles inside a hollow sphere - they are a model of a nucleus.