Question 1 of 5 The gravitational pull of the Moon is much less than the
gravitational pull of Earth. Consider an object with a mass
of 10 kilograms that weighs 22 pounds pn
Earth.
Which statement describes the object on the Moon?
O A. Its mass would be much greater.
B. Its weight would be much greater.
C. Its weight would be the same.
D. Its mass would be the same.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error