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Factors Influencing Flexibility Answers

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Which characteristics can be used to differentiate star systems? Select three options.the number of stars in the systemthe level of dust and gasthe age of the stars in the systemthe way stars are organized in the systemthe color of stars in the system

A
the number of stars in the system
B
the level of dust and gas
C
the age of the stars in the system
D
the way stars are organized in the system
E
the color of stars in the system
22
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Which graph shows the solution to the equation log2(3x – 1) = 2?

A
Option
B
Option
C
Option
D
Option
23

A/An [___] star system is made of two stars.

A
binary
B
globular cluster
C
open cluster
24

Which statement does Lola need to correct, and why?

A
Statement 1 because spiral galaxies do not have arms.
B
Statement 2 because the bulges contain mostly young red stars.
C
Statement 3 because the arms are made of mostly young blue and blue-white stars.
D
Statement 4 because spirals galaxies contain little to no dust.
26

[___]

A
globular cluster
B
open cluster
C
binary
27

What are the approximate solutions of the equation? Check all that apply.

A
Option
B
Option
C
Option
D
Option
29

Based on the information in the article, which title would be most appropriate?

A
New Planet Found in Open Cluster System
B
New Planet Discovered in Binary Star System
C
Discovery: New Globular Cluster and Planet
D
Discovery: Star System Orbiting New Planet
30

Which characteristic is used to classify galaxies?

A
the size of the galaxy
B
the shape of the galaxy
C
the presence of dust and gas between stars
D
the presence of active star formation sites
32

How are NGC 1427A and U different? How are they the same?

Answer:

NGC 1427A is larger and has an irregular shape, while U is smaller and shaped like a pinwheel. Both are made of dust, gas, and stars.

34

Use the drop-down menus to identify each type of galaxy pictured.

Answers:
Galaxy A::elliptical galaxy
Galaxy B::irregular galaxy
Galaxy C::spiral galaxy
35

Which ideas did you include in your answer? Check all that apply.

A
NGC 1427A is an irregular galaxy.
B
U is a spiral galaxy.
C
Both galaxies contain plenty of dust and gas.
D
Both galaxies have active star-forming sites.
36

Which statement describes the image?

A
This is an image of an elliptical galaxy.
B
This is an image of an irregular galaxy.
C
This is an image of a normal spiral galaxy.
D
This is an image of a barred spiral galaxy.
37

Elsa tries to solve the following equation, and determines there is no solution. Is she correct? Explain. log2x = log2(3x + 5) + 4

Answer:

Using the change-of-base formula, graph y = ln(x)/ln(2) and y = ln(3x + 5)/ln(2) + 4. The graphs do not intersect. Algebraically, the equation gives x = -80/47, which is outside the domain x > 0. Therefore, the equation has no solution, and Elsa is correct.

38

Which phrase best defines a galaxy?

A
tightly packed group of older stars
B
large grouping of more than two stars
C
loose, disorganized star cluster held together by gravity
D
large collection of stars, gas, and dust held together by gravity
39

Which is equivalent to ?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
40

Poor flexibility may be caused by __________.

A
muscle tightness
B
muscle looseness
C
youth
D
high levels of fitness

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