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WorksheetsBirth of Stars
Total questions: 16
Worksheet time: 4hrs 0mins
Stars form from huge clouds of gas and dust in space called :
supernova
nebula
the Kuiper Belt
the Oort Cloud
A cloud of gas and dust that is in front of a star blocking out it's light will appear :
dark
bright
flourescent
An example of a "bright nebula" would be :
the Coal Sack Nebula
the Horse Head Nebula
Spiral or Whirlpool Nebula
the Black Widow Nebula
A contracting cloud of gas and dust that may eventually become a star is called a (an) :
protostar
white dwarf
red giant
black hole
What force causes a cloud of dust and gas to come together and form a star ?
friction
magnetism
electromotive
gravity
If a star is large enough, nuclear _____________ will occur and a star will be born
fission
fusion
In a star's core, how is energy being produced ?
gold turns into silver
oxygen turns into carbon dioxide
hydrogen turns into helium
aluminum turns into carbon
What factor determines how long a star will last ?
it's mass
it's composition
neighboring stars
What color will the largest stars (O type) be during normal life ?
red
yellow
green
blue
Our sun is a medium sized yellow star which is classified with the letter :
A
G
M
O
The smallest stars that can exist (classified as M) will be the color
red
yellow
green
blue
How long will a large "O" type star last ?
10 thousand years
10 million years
10 billion years
10 trillion years
Which stars will last the longest ?
A
G
M
O
What is the predicted age of our sun ?
10 thousand years
10 million years
10 billion years
10 trillion years
The most abundant stars in the universe (73%) are classified with the letter :
A
G
M
O
What two factors keep a star together (maintain a certain size) during it's lifetime
mass and volume
speed and distance
gravity and heat
magnetism and electricity
