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The Greatest Star: Our Sun

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

The sun is a glowing ball of _______.

a)

Water

b)

Liquids

c)

Plasma (and gases)

d)

Rocks

2.

What is the sun mostly made up of?

a)

Helium

b)

Core

c)

Carbon

d)

Hydrogen

3.

The sun is the biggest STAR in the universe.

a)

Yes

b)

NO

4.

About how many Earths would fit inside the Sun?

a)

billion

b)

gazillion

c)

thousand

d)

million

5.

How long does it take for the Sun's energy to reach the Earth?

a)

2 days

b)

24 hours

c)

24 minutes

d)

8 minutes

6.

Which statement is true about the sun?

a)

It is a star

b)

It is the largest star in our galaxy

c)

It is a planet close to Earth

d)

Its color is red

7.

Why does the sun appear so bright and large to us?

a)

because it is so far away

b)

because it is so close

c)

because it is a super giant

d)

because it is a white dwarf

8.

Our Sun is a _______ sized star.

a)

Small

b)

Medium

c)

Large

d)

Extra Large

9.

What two gases make up most of the Sun?

a)

Hydrogen and Helium

b)

Helium and Oxygen

c)

Hydrogen and Oxygen

d)

Sodium and Oxygen

10.

The Sun is our main source of heat energy on earth.

a)

True

b)

False

11.

Which of the following statements best describes our Sun?

a)

The sun is a small-sized star.

b)

The sun is a medium-sized star.

c)

The sun is a large-sized star.

d)

Our sun's energy creates heat for the entire universe.

12.
 Light years are most helpful to scientists when they are measuring what?
a)
The speed of light
b)
The distances between objects in space
c)
The life cycle of our Sun
d)
The speed of a planet's orbit around the Sun
13.
Which of the following is true about nuclear fusion?
a)
Occurs at the center of stars & produces energy
b)
Occurs in the process of chemical reactions
c)
Results in the creation of black holes
d)
Occurs when 2 stars collide 
14.
Our universe is constantly __________________ because galaxies are moving ______________ each other.
a)
shrinking, towards
b)
rotating, around
c)
growing, away from
15.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
16.
What is at the center of the Solar System?
a)
Earth
b)
Moon
c)
Sun
d)
Jupiter
17.
Are stars out during the day?
a)
Yes, we just can't see them
b)
No, they are not
18.

Why do the stars look so small from Earth?

a)

they are small (size)

b)

they aren't as bright

c)

they are far away (distance)

d)

they are really just black holes

19.
What happens during nuclear fusion
a)
Hydrogen reacts with Oxygen to create fire.
b)
Hydrogen atoms are forced together to create Helium
c)
Uranium and Plutonium split apart and release radiation.
d)
Helium atoms break down to make hydrogen
20.
Where does nuclear fusion occur?
a)
Space
b)
Radiation Zone
c)
Photosphere
d)
The Core
21.
These are the pretty lights that occur at the north and south poles.
a)
Photosphere
b)
Aurora
c)
Magnetic field
d)
Solar wind
22.
These can disrupt electronics on Earth.
a)
Sunspots
b)
Solar flares
c)
Comets
d)
Mars
23.
Without the Earth's magnetic field
a)
We would not have seasons
b)
Ailens would invade
c)
Plants would grow bigger
d)
We would all die a horrible death
24.
What is an explosion on the sun that gives out huge amounts of energy?
a)
Sun Spot
b)
Solar Flare
c)
Sun Ray
d)
Sun Gases
25.
Which layer of the sun is the hottest?
a)
Photosphere
b)
Chromosphere
c)
Corona
d)
Core
26.

What is the sun made out of?

a)

fire and lava

b)

plasma and gases

c)

magma

d)

flames

27.
How does the sun keep all of the planets in orbit?
a)
The pull of its gravity
b)
the flames give it power
c)
the sun spots
d)
The solar flares guide them
28.
The Sun spins on its axis
a)
TRUE
b)
FALSE
29.
The SUN is an average sized star. 
a)
True
b)
False
30.
How long does it take energy to pass through the radiation zone?
a)
12 minutes
b)
100 year
c)
10,000 years
d)
100,000 years
31.
The sun makes up about _________ percent of the solar system's total mass.
a)
98
b)
95
c)
99.8
d)
98.9
32.
When hydrogen nuclei fuse into helium nuclei
a)
the nuclei die.
b)
energy is released.
c)
particles collide
d)
particles neutralize.
33.
Auroras are frequently seen
a)
near the equator.
b)
before a sunspot cycle.
c)
every 11 years.
d)
after solar flares.
34.
Sunspots vary in a cycle that lasts about
a)
110 yrs
b)
11,000 yrs
c)
11 yrs
d)
110,000 yrs
35.
What are northern lights?
a)
Auroras
b)
solar flares
c)
prominences
d)
coronas
36.

What is a light year?

a)

the speed that light travels in a year

b)

the speed that light travels from the sun to earth

c)

the distance light travels in a year

d)

the distance light travels in a second

37.
What type of galaxy is the Milky Way?
a)
Spiral galaxy
b)
Elliptical galaxy
c)
Nebula
d)
Globular cluster
38.
Where is the energy for the Sun get created?
a)
in the radiation zone
b)
in the convection zone
c)
in the core
d)
in the Sun's atmosphere
39.

How many miles away is the sun?

a)

93 million

b)

12 million

c)

50 million

d)

12 billion

40.
The sun appears to move across the sky each day.  What causes this?
a)
the spinning of the Earth's axis
b)
The path of the sun around the Earth
c)
the production the nuclear energy around the sun
d)
the tilt of the Earth on its axis

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