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WorksheetsStar Systems and Galaxies
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Star systems that have two stars are called double stars or
a)
binary stars
b)
single stars
c)
triple stars
d)
double binary
2.
A system in which one star blocks the light from another
a)
binary stars
b)
solar eclipse
c)
eclipsing binary
d)
lunar eclipse
3.
Have a loose disorganized appearance and contain up to a few thousand stars
a)
closed cluster
b)
globular cluster
c)
star cluster
d)
open cluster
4.
A large grouping of older stars that are round, packed, and filled with millions of stars
a)
open cluster
b)
globular cluster
c)
other stars
d)
galaxy
5.
a galaxy is...
a)
a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity
b)
the remains of high-mass stars
c)
far far away
d)
a large cloud of gas and dust spread out in an immense volume
6.
appear to have a bulge in the middle and arms that spin outward
a)
galaxy
b)
quasar
c)
spiral galaxy
d)
binary stars
7.
Elliptical galaxies look like
a)
unusual shapes
b)
slightly mishapen rectangles
c)
a golf ball
d)
round flattened balls
8.
Irregular Galaxies do not have regular shapes
a)
True
b)
False
9.
Quasars galaxies are
a)
Are very small with binary stars in the center
b)
Are very big
c)
Young active galaxies with huge black holes in the center
d)
Looks like round flattend balls with billions of stars
10.
What is a star system
a)
A system with only two stars
b)
A star system that has very old stars
c)
A system with very few stars
d)
Groups of two or more stars
11.
How can Astronomers detect if a star is binary from Earth?
a)
The bright star appears to have a slight wobble
b)
They can see that the other star is very dim but visible
c)
They use optical telescopes
d)
If the star suddenly turns invisible
12.
Astronomers detect binary stars by looking at the wobble and whenever the bright star looks dimmer periodically
a)
True
b)
False
13.
An eclipsing Binary star is a loose disorganisd groupe of stars
a)
False
b)
True
14.
Most stars are members of only groups of one
a)
True
b)
False
15.
Globular clusters are groups of young and bright stars
a)
True
b)
False
16.
Which is not a type of galaxy
a)
Elliptical
b)
Irregular
c)
Spiral
d)
Optical
17.
What is at the center of Quasars
a)
A black hole
b)
A supergiant
c)
A star
d)
The sun
18.
Astronomers have discovered about how many planets around other stars
a)
100
b)
1,000+
c)
300+
d)
500+
19.
The largest galaxies have more than how many stars?
a)
million+
b)
trillion+
c)
billion+
d)
quantillion+
20.
Most stars belong to large groupings called star clusters
a)
True
b)
False
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