WorksheetsGlow On
Total questions: 10
Worksheet time: 15mins
Name
Class
Date
1.
All stars create energy in their core through a process called _____
a)
nuclear fission
b)
nuclear fusion
c)
thermal decomposition
d)
chemical combustion
2.
Most stars are made up of mostly two kinds of gases - _____
a)
hydrogen and helium
b)
hydrogen and neon
c)
oxygen and helium
d)
oxygen and carbon dioxide
3.
Astronomers sometimes refer to a star's true brightness as its _____
a)
brilliance
b)
luminosity
c)
shine factor
d)
glossiness
4.
This term means "how bright the star is, as if you were hovering right in front of it"
a)
true brightness
b)
apparent brightness
c)
accurate brightness
d)
direct brightness
5.
Which term refers to how bright a star appears to us, when observed from Earth?
a)
true brightness
b)
apparent brightness
c)
supposed brightness
d)
likely brightness
6.
How many Earths could fit inside the Sun?
a)
200
b)
400
c)
400 thousand
d)
more than a million
7.
Which star is about 400 times bigger than the Sun, and 100,000 times more luminous?
a)
Polaris
b)
Vega
c)
Betelgeuse
d)
Sirius
8.
The Sun appears so big and bright to us on Earth because ______
a)
it's the biggest star
b)
it's the hottest star
c)
it's so close to us
d)
it's the most luminous star
9.
Which two factors influence a stars apparent brightness?
a)
luminosity and its distance from us
b)
size and luminosity
c)
mass and its distance from us
d)
its mass and size
10.
A star is a huge ball of hot gas that makes _____
a)
sound and light
b)
heat and sound
c)
heat and light
d)
heat and colour
100 %
