Answers2627 EARTH SPACE SCIENCE AStar Systems and Galaxies

Star Systems and Galaxies Answers

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Which characteristics can be used to differentiate star systems? Select three options.

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
3

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4

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14

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A
globular cluster
B
open cluster
C
binary
15

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
18

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
20

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.

21

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.
22

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.

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