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Worksheets8.8 Components of the Universe
Total questions: 23
Worksheet time: 15mins
Name
Class
Date
1.
Which star is considered a Main Sequence Star?
a)
A
b)
B
c)
C
d)
D
2.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
3.
Stars are formed in a large cloud of gas and dust called a
a)
cumulonimbus cloud
b)
nebula
c)
neutron star
d)
black hole
4.
Compared to the rest of the stars, our sun is considered...
a)
Extremely Large and Cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
5.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
d)
Giants
6.
Stars are made mostly of which two elements?
a)
Selenium and sodium
b)
Astatine and arsenic
c)
Chlorine and cesium
d)
Hydrogen and helium
7.
A large celestial body made of gases that emits light due to nuclear reactions is called -
a)
a galaxy
b)
a nebula
c)
a comet
d)
a star
8.
An interstellar cloud of dust and gases that serves as a location for the formation of new stars is -
a)
a meteor
b)
a planet
c)
a galaxy
d)
a nebula
9.
Composed of millions of stars as well as interstellar gas and dust
a)
Galaxies
b)
Star
c)
Nebulae
d)
Black holes
10.
The illustration provided shows four locations in or near the Milky Way Galaxy. Which of the labeled locations shows the approximate position of the Sun?
a)
W
b)
X
c)
Y
d)
Z
11.
Astronomers can heat elements here on Earth and observe the wavelengths of light, which the elements emit. By then analyzing the light from distant stars, the astronomers can determine what property of these stars?
a)
Average diameter
b)
Distance from Earth
c)
Overall shape
d)
Chemical composition
12.
The spectrum for visible wavelengths emitted by Star X is compared here to the emission spectra of four different elements. According to the spectral analysis data, which element is present in Star X?
a)
Carbon
b)
Helium
c)
Magnesium
d)
Neon
13.
Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?
a)
1 year
b)
4.3 years
c)
43 years
d)
10 trillion years
14.
Which star has the lowest luminosity?
a)
A
b)
B
c)
C
d)
D
15.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
16.
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!
a)
noble gases
b)
transition
c)
halogens
d)
borons
17.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
18.
An element with five valence electrons is
a)
phosphorus
b)
oxygen
c)
beryllium
d)
rubidium
19.
Why does group number 18 have the least reactive elements?
a)
They all have an odd number of protons.
b)
They all have an even number of protons.
c)
They have the largest masses.
d)
Their electron shells are the most filled and do not need to be very reactive.
20.
The elements in a column of the periodic table...
a)
have similar atomic numbers
b)
start with the same letter
c)
have similar properties
d)
are not related in any way
21.
The part of the atom that determines the identity of the atom
a)
proton
b)
nucleus
c)
electron
d)
neutron
22.
An atom has 10 protons and a mass of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
23.
The following is a:
a)
Compound
b)
Element
c)
Mixture of elements
d)
Diatomic molecule
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