WGU C165
Integrated Physical Sciences
Earth & Sky OA
Exam Readiness
Practice Test & Study Guide
Use this Document to pass
I Was able to score exemplary on the
Exam with this.
Constitute over 80% of the Objective
Assessment (OA).
,According to Newton's law of universal gravitation, which types of
objects does gravity act to produce a force on?
Between every pair of objects
Between small objects and Earth only
Between planets only
Between a star and a planet
Answer
Between every pair of objects
Newton's law of universal gravitation states that gravity acts between every
pair of objects.
What happens to the force of gravity when two objects are closer to
one another?
It is smaller.
It remains the same.
It is greater.
Answer
It is greater.
Rationale: Newton’s law of universal gravitation says that the force of
gravity between objects is proportional to the product of their masses.
What happens to the force of gravity if the mass of either object is
greater?
,The force of gravity is smaller.
The force of gravity is greater.
The force of gravity remains the same.
Answer
The force of gravity is greater.
Newton's law of universal gravitation says that the force of gravity between
objects is inversely proportional to the square of the distance between the
masses.
What describes the force of gravity?
It is always repulsive.
It is always attractive.
It can be either attractive or repulsive.
Answer
It is always attractive.
Suppose some region of space happened to have a greater density of
matter than another. Which of these describes the expected effect of
gravity acting on matter in the early universe?
Gravity would cause matter to attract and tend to be pulled toward
regions where there is already more matter.
Gravity would have no effect on how matter is distributed in the early
universe.
Gravity would cause matter to repel and spread out faster.
Answer
, Gravity would cause matter to attract and tend to be pulled toward regions
where there is already more matter.
Gravity pulls objects toward each other.
What would happen to the density?
It would decrease.
It would increase.
It would be unaffected.
Answer
It would increase.
The gas particles being closer, with more of them in each cubic meter of
space, would mean greater density.
What would happen to the pressure?
It would increase.
It would be unaffected.
It would decrease.
Answer
It would increase.
If particles are closer together, the volume they take up decreases, and the
pressure therefore increases.
What would happen to the kinetic energy of the particles of matter?
It would increase.
Integrated Physical Sciences
Earth & Sky OA
Exam Readiness
Practice Test & Study Guide
Use this Document to pass
I Was able to score exemplary on the
Exam with this.
Constitute over 80% of the Objective
Assessment (OA).
,According to Newton's law of universal gravitation, which types of
objects does gravity act to produce a force on?
Between every pair of objects
Between small objects and Earth only
Between planets only
Between a star and a planet
Answer
Between every pair of objects
Newton's law of universal gravitation states that gravity acts between every
pair of objects.
What happens to the force of gravity when two objects are closer to
one another?
It is smaller.
It remains the same.
It is greater.
Answer
It is greater.
Rationale: Newton’s law of universal gravitation says that the force of
gravity between objects is proportional to the product of their masses.
What happens to the force of gravity if the mass of either object is
greater?
,The force of gravity is smaller.
The force of gravity is greater.
The force of gravity remains the same.
Answer
The force of gravity is greater.
Newton's law of universal gravitation says that the force of gravity between
objects is inversely proportional to the square of the distance between the
masses.
What describes the force of gravity?
It is always repulsive.
It is always attractive.
It can be either attractive or repulsive.
Answer
It is always attractive.
Suppose some region of space happened to have a greater density of
matter than another. Which of these describes the expected effect of
gravity acting on matter in the early universe?
Gravity would cause matter to attract and tend to be pulled toward
regions where there is already more matter.
Gravity would have no effect on how matter is distributed in the early
universe.
Gravity would cause matter to repel and spread out faster.
Answer
, Gravity would cause matter to attract and tend to be pulled toward regions
where there is already more matter.
Gravity pulls objects toward each other.
What would happen to the density?
It would decrease.
It would increase.
It would be unaffected.
Answer
It would increase.
The gas particles being closer, with more of them in each cubic meter of
space, would mean greater density.
What would happen to the pressure?
It would increase.
It would be unaffected.
It would decrease.
Answer
It would increase.
If particles are closer together, the volume they take up decreases, and the
pressure therefore increases.
What would happen to the kinetic energy of the particles of matter?
It would increase.
