1. Which of the following objects would require the use of a large-scale model?

A.An atom
B.A car engine
C.A frog's heart
D.The Mississippi River
2. Scott stated the following series of observations. Which represents a theory?

A.I observed three stars in the sky.
B.The stars give off light.
C.Light travels at 300,000 kilometers per second.
D.Stars are balls of hot gases.

1. An atom is an object that needs a large-scale model. A large-scale model must be bigger than the object itself.
2. The correct answer among the choices provided is option C. It is a theory that light travels at 300,000 kilometers per second.

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spreadershop spreadershop · Answer 2 · 2019-06-18T04:52:46+02:00

Answer to Question 1: Option A. An atom.

An atom is an element that requires a large-scale modeled in order to be contemplated by the human-eye, given its invisibly small size. A large-scale model must be larger than the real object it represents, and in this case, that requirement is met.

Answer to Question 2: Option C. Light travels at 300,000 kilometers per second.

By observing the stars in the sky, one can make themselves a description of their visual appearance, but when it comes to the behavior of these objects in a numerical fashion (the velocity at which the stars move, it is necessary to prove this statement in order to be considered a fact -- and that's the basis of theory-making.