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Lifecycle of stars

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.
A giant cloud of gas and dust, it is made mostly of Hydrogen and Helium.
a)
Supernova 
b)
Nebula 
c)
Planetary Nebula 
d)
Gravity 
2.

A huge ball of gas held together by gravity. The central core is extremely hot and produces energy from Nuclear fusion.

a)

Star

b)

Nebula 

c)

Mass

d)

Gravity 

3.
A process in stars where two Hydrogen atoms combine to form Helium and release energy.
a)
Nebula 
b)
Nuclear Fusion 
c)
Supernova 
d)
Gravity 
4.
All low/medium mass stars will eventually 
a)
explode into a supernova
b)
become a black hole
c)
change into a white dwarf 
d)
become a neutron star
5.
The quantity of matter determined from its weight.
a)
Star
b)
Nebula 
c)
Mass
d)
Gravity 
6.
A high mass star is different from a low/medium mass star because,
a)
it does not begin as a nebula
b)
it does not end
c)
it does not have a white dwarf stage
d)
it does not use nuclear fusion
7.
Eventually, our Sun will run out of ____ and become a ____.
a)
hydrogen, red dwarf
b)
hydrogen, red giant
c)
hydrogen, blue giant
d)
helium, white dwarf
8.
What stage do stars, no matter their size, spend most of their time?
a)
stellar nebula 
b)
main sequence
c)
red giant
d)
white dwarf
9.
A ________ is an object so dense with so much gravity that even light cannot escape.
a)
neutron star
b)
white dwarf
c)
blackhole
d)
black dwarf
10.

Which object is known for its intense pull of gravity?

a)

nebula

b)

Black hole

c)

Super Giant

d)

A Galaxy

11.
Which sequence below is correct?
a)

Red Giant, Nebula, Main Sequence

b)

Nebula, Main Sequence, Red Giant

c)

Nebula, Main Sequence, Red Giant

d)

Red Giant, Nebula, Main Sequence

12.
At which stage does a star swell up many times larger than its normal size?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
13.

What determines the size of the star?

a)

It's temperature

b)

The type of nuclear reaction

c)

The balance between gravity and energy released

d)

It is random

14.

Red Giants are larger than main sequence because:

a)

The mass (amount of H and He) has increased

b)

A new Nuclear reaction is releasing more energy

c)

Gravity has become less

d)

Two main sequence stars have collided

15.

A black hole doesn't let any light escape because

a)

The wavelength of light is shifted so it cannot be seen

b)

The speed of light is reduced to zero

c)

It is unknown why this occurs

d)

Gravity is so strong it pulls light back

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