Question

color by number life cycle of a star
name:
date:
per:
directions: answer each question by circling the correct choice. after you have finished all questions, color the picture on the back using the corresponding color choice. you may choose any color you want for any parts of the picture that are not assigned a color.

1. stars are born in clouds of gas and dust called...

galaxies red
black holes orange
nebulas yellow

1. this property determines the life cycle of a star...

distance from sun orange
volume sky blue
mass red

1. within a stars core, hydrogen becomes helium in a process called...

nuclear fission blue
nuclear fusion orange
decomposition red

1. what type of star is the sun?

main sequence yellow
red giant black
white dwarf blue

1. a star with an average mass will become a ______ after it is a main sequence star.

red super giant black
neutron star purple
red giant sky blue

1. this occurs when a massive star explodes at the end of its life...

supernova red
black hole red orange
pulsar green

1. when a massive star collapses it can become so dense that its gravitational pull keeps light from escaping. this is known as a...

supergiant blue
black hole red orange
supernova sky blue

1. this is a star with a small radius and high density. it will form if a star is not massive enough to produce a black hole...

white dwarf purple
red dwarf black
neutron star yellow

1. it will take about 5 billion years for our sun to run out of hydrogen to fuse into helium. at the end of its life cycle our sun will become a...

neutron star sky blue
white dwarf red orange
supernova red

1. which of the following correctly lists the color of stars from lowest temperature to highest temperature?

blue, white, yellow, orange, red green
red, orange, yellow, white, blue yellow
white, blue, yellow, orange, red purple

1. which of the following is false?

large mass stars have a longer lifespan. orange
elements heavier than iron will form during a supernova. red
the color of a star tells us the temperature. blue

1. which of the following statements is true?

the less mass a main sequence star has, the higher the temperature. black
the more mass a main sequence star has, the higher the temperature. blue
there is no relationship between mass and the temperature of stars. purple

Explanation:

1. Stars form in nebulas (clouds of gas and dust).
2. Mass determines a star's life cycle.
3. Hydrogen becomes helium via nuclear fusion in a star's core.
4. The Sun is a main - sequence star.
5. An average - mass star becomes a red giant after the main - sequence phase.
6. A massive star exploding at the end of its life is a supernova.
7. A black hole is formed when a massive star collapses so densely that light can't escape.
8. A white dwarf has a small radius and high density (for non - massive enough stars to form black holes).
9. The Sun will become a white dwarf at the end of its life cycle.
10. Stars' colors from lowest to highest temperature: red (lowest), orange, yellow, white, blue (highest).
11. Large - mass stars have shorter lifespans (so the statement “Large mass stars have a longer lifespan” is false).
12. The more mass a main - sequence star has, the higher the temperature.

Answer:

1. C. nebulas
2. C. mass
3. B. nuclear fusion
4. A. main sequence
5. C. red giant
6. A. supernova
7. B. black hole
8. A. white dwarf
9. B. white dwarf
10. B. red, orange, yellow, white, blue
11. A. Large mass stars have a longer lifespan
12. B. The more mass a main sequence star has, the higher the temperature