WorksheetsThe Sun
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
The sun converts matter into energy in the
a)
corona.
b)
radiative zone
c)
convection zone
d)
core
2.
Most of the sun’s energy is a result of
a)
nuclear fusion
b)
nuclear fission
c)
atomic reactions
d)
coronal mass ejection
3.
When hydrogen nuclei fuse into helium nuclei
a)
the nuclei die.
b)
energy is released.
c)
particles collide
d)
particles neutralize.
4.
Auroras are frequently seen
a)
near the equator.
b)
before a sunspot cycle.
c)
every 11 years.
d)
after solar flares.
5.
Which of the following is NOT a solar ejection?
a)
solar flare
b)
prominence
c)
sunspot
d)
coronal mass ejection
6.
Sunspots vary in a cycle that lasts about
a)
110 yrs
b)
11,000 yrs
c)
11 yrs
d)
110,000 yrs
7.
Strong magnetic fields on regions of the sun lead to sunspots because
a)
convection slows and energy decreases.
b)
convection increases and energy increases.
c)
radiation slows and energy decreases.
d)
radiation increases and energy increases.
8.
In the equation E=mc2, the letter E represents
a)
the energy that is produced.
b)
the mass that is converted.
c)
the speed of light.
d)
the distance to Earth from the sun.
9.
What is the hottest layer of the sun’s atmosphere called?
a)
convective zone
b)
corona
c)
radiative zone
d)
photosphere
10.
What elements make up most of the sun’s mass?
a)
carbon and oxygen
b)
carbon and hydrogen
c)
helium and nitrogen
d)
hydrogen and helium
11.
Particles thrown off the sun’s corona that can affect Earth’s magnetic field are called
a)
a coronal mass ejection.
b)
a coronal mass reflection
c)
nuclear fusion
d)
sunspots
12.
During nuclear fusion in the sun, which of the following occurs?
a)
Atomic nuclei split apart.
b)
The aurora australis appears.
c)
hydrogen nuclei combine to produce a helium nucleus.
d)
A solar eclipse results
13.
Scientists break up the sun’s light into a spectrum using a device called a
a)
corona
b)
spectrograph
c)
positron
d)
chromograph
14.
What is a prominence on the sun?
a)
a part of the sun’s corona, a cloud of colored gas
b)
a disturbance in the sun’s atmosphere; an arched, glowing cloud of gas
c)
a part of the convective zone, a cool area with powerful magnetic fields
d)
a magnetic disruption in the sun’s photosphere
15.
What are northern lights?
a)
Auroras
b)
solar flares
c)
prominences
d)
coronas
16.
Magnetic fields on the sun are produced by the sun’s uneven rotation and
a)
the movement of sunspots on the sun’s surface.
b)
the movement of gases in the corona.
c)
gases in the convective zone.
d)
gases in the radiation zone.
17.
Astronomers observing spectral lines can observe red or blue shifts kn wavelengths, which can be used to determine
a)
the direction of a star's motion
b)
the composition of a star
c)
the temperature of a star
d)
the classification of a star
18.
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
19.
What type of galaxy is the Milky Way?
a)
Spiral galaxy
b)
Elliptical galaxy
c)
Nebula
d)
Globular cluster
20.
How many stars are there in the Milky Way?
a)
Hundreds
b)
Hundreds of thousands
c)
Hundreds of millions
d)
Hundreds of billions
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