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WorksheetsNaked Eye Observations
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
At any given time, how many stars can be seen by people with normal vision?
a)
a few dozen
b)
a few hundred
c)
a few thousand
d)
a few million
2.
Of the objects you can see in the night sky, which are the most abundant?
a)
the planets
b)
the brightest stars
c)
the medium brightness stars
d)
the faintest stars
3.
Hipparchus' system of magnitudes had the brightest stars classified as _____
a)
1st magnitude
b)
2nd magnitude
c)
4th magnitude
d)
6th magnitude
4.
What is the brightest star in the night sky?
a)
Vega
b)
Sirius
c)
Betelgeuse
d)
Arcturus
5.
Which stars seem to have color?
a)
the brightest stars
b)
the hottest stars
c)
the coolest stars
d)
the faintest stars
6.
How many constellations are recognized officially by the International Astronomical Union?
a)
12
b)
45
c)
60
d)
88
7.
Which prominent constellation was seen as a hunter with arms raised?
a)
Delphinus
b)
Pisces
c)
Leo
d)
Orion
8.
Which pattern of stars makes up the haunches and tail of Ursa Major, the Big Bear?
a)
The Big Dipper
b)
The Little Dipper
c)
Ursa Minor
d)
Pisces
9.
What language was used to name the brightest stars, with names still used today?
a)
Roman
b)
Greek
c)
Arabic
d)
Latin
10.
The stars in any constellation are given Greek letters in order of their _____
a)
brightness
b)
color
c)
right ascension
d)
declination
11.
Observatories tend to be built in remote areas, in order to avoid _____
a)
light pollution
b)
noise pollution
c)
air pollution
d)
thermal pollution
12.
What is the faint glowing streak across the sky, which is impossible to see in a big city?
a)
the Milky Way
b)
Orion
c)
Alpha Orionis
d)
the Big Dipper
13.
How can outside light fixtures be easily modified to decrease light pollution?
a)
direct them down to the ground
b)
change the type of lightbulbs
c)
decrease the number of lights
d)
change to LED bulbs
14.
How can you easily identify the planets among the stars in the night sky?
a)
they are coloured
b)
they appear much larger
c)
they are much brighter
d)
they don’t twinkle
15.
Not counting Earth, how many planets are visible to the naked eye?
a)
three
b)
four
c)
five
d)
six
16.
What is the third brightest natural object in the sky?
a)
the Sun
b)
the Moon
c)
Venus
d)
Mercury
17.
How long does it take for the celestial sphere to spin in one complete cycle?
a)
one hour
b)
one day
c)
one month
d)
one year
18.
Polaris sits very close to _____
a)
the south celestial pole
b)
the north celestial pole
c)
the zenith
d)
the equator
19.
If you were standing on the north pole of the Earth, where would you see Polaris?
a)
at the celestial equator
b)
at the sky’s zenith
c)
on the horizon
d)
at the southern pole
20.
Where could you stand, on the Earth, so that every star in the sky is eventually visible?
a)
on the equator
b)
on the celestial equator
c)
on the north pole
d)
on the south pole
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