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Astro 4 GCSE Stars

Total questions: 27

Worksheet time: 12mins

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 high mass star that eventually explodes.
a)
Nebula 
b)
Planetary Nebula 
c)
Supernova 
d)
Star 
3.
A huge ball of gas held together by gravity. The central core is extremely hot and produces energy.
a)
Star
b)
Nebula 
c)
Mass
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.
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
6.
Low/medium stars, like our Sun, are likely formed directly from a 
a)
nebula
b)
supernova
c)
red giant
d)
black dwarf
7.

Only high mass stars have this in their life cycle.

a)

A red giant

b)

A nebula

c)

A white dwarf

d)

A supernova

8.

How might a high mass star's life cycle end? (check all that apply)

a)

white dwarf

b)

neutron star

c)

black hole

d)

red giant

9.

A low mass star life cycle will end as ___.

a)

a supernova

b)

a white dwarf

c)

a neutron star

d)

a black hole

10.

a SUPERNOVA is

a)

a baby star

b)

an old star

c)

an explosion at the end of a star's life

11.

a BLACK HOLE is:

a)

a light in space

b)

a baby planet

c)

a space where GRAVITY IS SO STRONG that light cannot go out.

12.

CONSTELLATIONS are:

a)

a group of stars that forms a pattern

b)

a group of planets

c)

a group of nebulaes

13.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
14.

A _________ star is a remanent of a massive star after it has exploded as a super nova

a)

Red Super Giant

b)

Black hole

c)

Neutron

d)

Planetary Nebula

15.

A _______________ looks like a star but its core is not yet hot enough for fusion to take place. The luminosity comes exclusively from the heating of the contracting elements

a)

White Dwarf

b)

Nebula

c)

Neutron Star

d)

Protostar

16.

In order for a planetary object to be classified as a sun, ________ must occur in the center of the core.

a)

Binary Fission

b)

Nuclear Fusion

c)

Nucleus Condensation

d)

Nuclear Fission

17.

True or False: All stars will die in a massive explosion

a)

True

b)

False

18.

True or False: All stars begin as a nebula

a)

True

b)

False

19.
True or False
The Sun is the biggest star in the sky.
a)
True
b)
False
20.
The color of a star tells us its
a)
magnitude
b)
temperature
c)
size
d)
age
21.
Most stars are made of which gases?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
22.
What color of star is the hottest?
a)
Blue
b)
Red
c)
Yellow
d)
Orange
23.
What color of star is the coolest?
a)
Red
b)
Yellow
c)
Blue
d)
White
24.
Put the stars in order from hottest to coolest.
a)
Blue, Red, White, Yellow, Orange, 
b)
Red, White, Yellow, Orange, Blue
c)
Blue, White, Yellow, Red, Orange
d)
Blue, White, Yellow, Orange, Red
25.

What are the spectral classes in order?

a)

OABMFGK

b)

ABFGKMO

c)

OBAFGKM

d)

MAFOBKG

26.

What class is the Sun?

a)

F

b)

G

c)

K

d)

M

27.

Which color stars on the HR Diagram are the hottest stars?

a)

Red (M class)

b)

Orange (K Class)

c)

Blue (O Class)

d)

White (A Class)