AnswersRMA FL-2001310-EarthSpace Science Semester 1Cumulative Exam

Cumulative Exam — Cumulative exam Answers

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Which best compares the gravitational force and the strong force?

A
Both are attractive and repulsive.
B
Both are attractive only.
C
Both are weaker than the electromagnetic force.
D
Both are stronger than the electromagnetic force.
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What do scientists know about the future of the universe?

A
what dark matter is made of
B
why the expansion of the universe is accelerating
C
that stars will eventually burn out causing the universe to become cold and dark
D
that galaxies spin much slower than they should based on visible matter
44

Which electromagnetic wave transfers the least amount of energy?

A
gamma
B
X-ray
C
ultraviolet
D
microwave
45

Which best explains why infrared waves are ineffective for treating cancer?

A
They have frequencies that are too high to kill cancer cells.
B
They have short wavelengths, which can be harmful to healthy cells.
C
They do not transfer enough energy to destroy cancer cells.
D
They have long wavelengths, which can be harmful to healthy cells.
46

The diagram illustrates the water cycle.

Question illustration
A
Water cycles from a nonliving to a living part of the environment.
B
Water changes from a liquid to a gas.
C
Water changes from a gas to a liquid.
D
Water cycles from a living to a nonliving part of the environment.
47

Which two forces act directly on objects that are unable to be viewed by the unaided eye?

A
electromagnetic and strong
B
gravitational and electromagnetic
C
strong and weak
D
weak and gravitational
48

Sophie says dolphins and sharks look very similar, so they must be related. Jake disagrees, saying DNA evidence has shown that dolphins and other aquatic mammals are actually more closely related to the ancestors of modern hippos. Who is correct using the modern system of classification?

A
Sophie is correct because dolphins look more like sharks than like hippos.
B
Jake is correct because classification is based on evolutionary relationships.
C
Both are correct because traditional and modern classifications can overlap.
D
Neither is correct because neither is taking into account both the traditional and modern systems
49

Which of the following is an example of adaptive radiation?

A
One population of squirrels becomes two separate species over a long time.
B
One population of lizards forms 15 separate species over a short time.
C
One species of birds becomes better suited to its environment over time.
D
One species of fish forms when two species of fish begin to breed with each other.
50

Which list correctly names the three types of galaxies?

A
binary, open, globular
B
elliptical, open, binary
C
irregular, spiral, elliptical
D
open, irregular, spiral

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