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Chapter 24: Stars

Total questions: 42

Worksheet time: 23mins

Name
Class
Date
1.
This is the inner-most layer of the sun, where nuclear fusion happens. 
a)
core
b)
corona
c)
photosphere
d)
chromosphere
2.
This is a stream of charged particles that streams out into space through the corona.
a)
solar flare
b)
sun spots
c)
solar prominence
d)
solar wind
3.
This layer contains currents of rising and sinking gas that carry energy to the surface.
a)
radiative zone
b)
corona
c)
chromosphere
d)
convective zone
4.
Innermost layer of the sun's atmosphere, produces the sun's light.
a)
chromosphere
b)
corona
c)
photosphere
d)
radiative zone
5.
What color are the hottest stars?
a)
red
b)
yellow
c)
orange
d)
blue
6.
At 10,000 degrees Celsius, hydrogen begins to change into helium and energy is released in a process called
a)
supernova
b)
pulsar
c)
nuclear fusion
d)
nuclear fission
7.
What color of star is the hottest?
a)
Blue
b)
Red
c)
Yellow
d)
Orange
8.
What is the name of the gas/dust clouds that form stars?
a)
Nebulas
b)
Protostars 
c)
Supernova
d)
Neutron Star
9.
What layer can be seen here?
a)
chromosphere
b)
corona
c)
photosphere
d)
core
10.
What is the sun mostly made up of
a)
Helium
b)
Core
c)
Carbon
d)
Hydrogen
11.
What protects life on Earth from gamma rays, X rays, and particles emitted by the Sun?
a)
The ozone layer in the stratosphere
b)
The ionosphere
c)
The magnetosphere (Earth's magnetic field)
d)
Clouds
12.

How old is the sun?

a)

1 million years old

b)

4.5 million years old

c)

4.5 billion years old

d)

we do not know

13.

Nuclear fusion produces the sun's energy. It fuses hydrogen into ___ atoms.

a)

carbon

b)

nitrogen

c)

lithium

d)

helium

14.
Most of the sun’s energy is a result of
a)
nuclear fusion  
b)
nuclear fission
c)
atomic reactions
d)
coronal mass ejection
15.

Hertzsprung-Russell Diagrams show

a)

The electromagnetic spectrum with wave frequencies.

b)

The average surface temperature of stars and their absolute magnitude.

c)

The total amount of valence electrons an element from the periodic table has.

d)

A diagram of the temperatures of layers of the earth.

16.

The temperature of a star is best determined by its color. What is the Coolest Star?

a)

Red

b)

Blue

c)

White

d)

Yellow

17.

Which set of stars would burn at  higher 

        surface temperatures?

a)

White Dwarfs

b)

Super giants

c)

Giants

d)

None of the above

18.

Which of the following stars are in correct order from least to most absolute magnitude:

a)

Giants, Super Giants, White Dwarfs

b)

Super Giants, White Dwarfs, Giants

c)

White Dwarfs, Giants, Super Giants

d)

White Dwarfs, Super Giants, Giants

19.

Which characteristics best describe white dwarfs as compared to giants?

a)

White dwarfs are cooler and dimmer than giants

b)

White dwarfs are cooler and brighter than giants

c)

White dwarfs are warmer and dimmer than giants

d)

White dwarfs are warmer and brighter than giants

20.

Which star is the hottest?

a)

Betelguese

b)

Rigel

c)

The Sun

d)

Aldebaran

21.

Which star is dimmer?

a)

Rigel

b)

Sirius

c)

Sun

d)

Barnard's Star

22.

Is the following sentence true or false? The final stages of a star's life depend on it's mass.

a)

True

b)

False

23.

Elements heavier than hydrogen and helium are formed through the process of nucleosynthesis which takes place-

a)

Around the edges of a black hole.

b)

During a supernova explosion.

c)

Every time a new star s formed.

d)

When a larger star becomes a white dwarf.

24.

Balanced outward pressure and inward gravity of a star's life is called.

a)

Supernova

b)

Nucleosynthesis

c)

Black hole

d)

Main sequence stage

25.

A high mass star's core temperatures are high enough to fuse to which element before it dies?

a)

Carbon

b)

Helium

c)

Oxygen

d)

Iron

26.

The more massive star will rebound so hard that the core collapses and becomes ?

a)

Supernova

b)

Black hole

c)

Red giant

d)

White dwarf

27.

contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun

a)

supervona

b)

black hole

c)

protostar

d)

gravity

28.

stars that are fusing hydrogen atoms to form helium atoms in their cores.

a)

super redgiant

b)

red giant

c)

Nebula

d)

main sequence star

29.

very large star of high luminosity and low surface temperature, thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.

a)

nuclear fusion

b)

main sequence star

c)

core collapse

d)

red giant

30.

a small very dense star that is typically the size of a planet, formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.

a)

black dwarf

b)

white dwarf

c)

super redgiant

d)

mass

31.

a celestial object of very small radius and very high density, composed predominantly of closely packed neutrons, thought to form by the gravitational collapse of the remnant of a massive star after a supernova explosion

a)

neutron star

b)

black hole

c)

gravity

d)

nuclear fusion

32.

the intrinsic brightness of a celestial object

a)

mass

b)

gravity

c)

luminosity

d)

stars

33.

is the force by which a planet or other body draws objects toward its center

a)

nebula

b)

black hole

c)

neutron star

d)

gravity

34.

What is a Star?

a)

a large celestial body that is made of plasma and held together by gravity.

b)

a large ball of fire held together by gravity.

35.

Nuclear fusion produces the sun's energy. It fuses hydrogen into ___ atoms.

a)

carbon

b)

nitrogen

c)

lithium

d)

helium

36.
Most of the sun’s energy is a result of
a)
nuclear fusion  
b)
nuclear fission
c)
atomic reactions
d)
coronal mass ejection
37.

When a young, developing star becomes hot enough and dense enough, the process of _______ begins.

a)

H --> He fusion

b)

He --> C fusion

c)

He --> C --> O fusion

d)

fission

38.

The sun is considered stable on the main sequence stage. Which statement below represents the MAJORITY of atoms combining together during the sun's fusion process?

a)

Helium and Hydrogen atoms

b)

Hydrogen atoms

c)

Hydrogen and Lithium atoms

d)

Hydrogen and Carbon atoms

39.

very large star of high luminosity and low surface temperature, thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.

a)

nuclear fusion

b)

main sequence star

c)

core collapse

d)

red giant

40.

stars that are fusing hydrogen atoms to form helium atoms in their cores.

a)

super redgiant

b)

red giant

c)

Nebula

d)

main sequence star

41.

contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun

a)

supervona

b)

black hole

c)

protostar

d)

gravity

42.

a celestial object of very small radius and very high density, composed predominantly of closely packed neutrons, thought to form by the gravitational collapse of the remnant of a massive star after a supernova explosion

a)

neutron star

b)

black hole

c)

gravity

d)

nuclear fusion

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