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Astrophysics

Total questions: 61

Worksheet time: 37mins

Name
Class
Date
1.

Which of the following is the largest?

a)

Planet

b)

Galaxy

c)

Satellite

d)

Comet

e)

Star

2.

What is the reason a Main sequence star is so stable?

a)

The number of atoms remain the same

b)

The radiation pressure balances the pressure of weight

c)

Magnetic forces within it hold it together

d)

It has plenty of emotional support from it's friends

3.

What is a comet?

a)

Large rocky ball of ice that orbits the sun

b)

Cluster of billions of stars

c)

Lumps of rock or iron that orbit the sun

d)

Minor planets

4.

Which of the following are evidence for the big bang?

a)

Cosmic microwave background radiation

b)

Doppler effect

c)

Static electricity

d)

Isotropic

5.

The force of gravity ____ as the mass of an object increases.

a)

decreases

b)

increases

c)

remains constant

d)

disappears

6.

Which of the following planets has the greatest orbital speed?

a)

Mercury

b)

Earth

c)

Saturn

d)

Venus

7.

Evidence supporting the Big Bang Theory.

a)

background radiation

b)

dark matter

c)

escape velocity

d)

gravitational waves

8.

Any object that orbits another object.

a)

Earth

b)

elipse

c)

star

d)

satellite

9.

Which planet would have the greatest period?

a)

Jupiter

b)

Mars

c)

Neptune

d)

Saturn

10.

Which planet would have the greatest orbital velocity?

a)

Earth

b)

Uranus

c)

Neptune

d)

Pluto

11.

Which planet would have the greatest gravitational force?

a)

Jupiter

b)

Pluto

c)

Earth

d)

Mars

12.

Which planet would experience the greatest gravitational force from the Sun?

a)

Saturn

b)

Earth

c)

Mars

d)

Neptune

13.

The time required for the Earth to rotate once on its axis?

a)

day

b)

month

c)

week

d)

year

14.

The time required for the Earth to orbit once around the Sun.

a)

day

b)

week

c)

month

d)

year

15.

_____ should have enough gravitational force to pull in light.

a)

stars

b)

black holes

c)

red giants

d)

supernovae

16.
Which term describes a bright streak of light that results when a meteoroid burns up in the Earth's atmosphere?
a)
Asteroid
b)
Meteoroid
c)
Meteorite
d)
Meteor
17.
the star at the center of the Solar System that supplies heat and light to earth; its enormous gravity keep the Solar System in orbit.
a)
satellite
b)
sun
c)
craters
d)
moon
18.
A small icy space object orbiting the sun that makes a tail of gas and dust is?
a)
Meteor
b)
Comet
19.
The __________ has planets, moons, comets, and asteroids.
a)
solar system
b)
earth
c)
rotation
d)
United States
20.
A small rocky object orbiting the sun.
a)
Asteroid
b)
Comet
c)
Moon
d)
Meteor
21.
What holds the planets in their orbits around the sun?
a)
gravity
b)
speed
c)
string
d)
air currents
22.
A small, hot star near the end of its life is a star called a
a)
white dwarf
b)
red dwarf
c)
supergiant
d)
protostar
23.
As gravity pulls gas and dust into a sphere that becomes denser and hotter, and a sunlike star begins to form, it is called a(n)
a)
white dwarf
b)
red dwarf
c)
supergiant
d)
protostar
24.

a star in which the electrons and protons have become bound is called a

a)

supernova

b)

neutron star

c)

black hole

d)

pulsar

25.
The color of a star depends on its
a)
size
b)
temperature
c)
shape
d)
magnitude
26.
a massive and dense object from which not even light can escape
a)
black hole
b)
supernova
c)
pulsar
d)
red giant
27.
What color are the hottest stars?
a)
red
b)
yellow
c)
orange
d)
blue
28.
All stars begin their life in a
a)
Main Sequence
b)
Nebula
c)
Protostar
d)
Black Dwarf
29.
What are the final two stages of a medium mass star?
a)
white dwarf - black dwarf
b)
neutron star - black hole
c)
supernova - neutron star
d)
pulsar - neutron star
30.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
31.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
32.
A gigantic explosion that causes the death of a large star is called
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
33.
Which of the following list the correct order of the life cycle of massive stars?
a)
Nebula --> protostar --> main sequence --> red supergiant --> supernova --> blackhole
b)
Nebula --> protostar --> main sequence --> red giant --> planetary nebula --> white dwarf --> black dwarf
c)
Nebula --> protostar --> main sequence --> supernova --> red giant --> blackhole
d)
Nebula --> protostar --> blackhole --> red supergiant --> supernova --> main sequence
34.
What characteristics of stars are plotted on an HR Diagram?
a)
Temperature and brightness
b)
Temperature and color
c)
Brightness and age
35.
What are the 4 colors stars can be?
a)
Blue, white, Purple, Green
b)
Yellow, Red, Orange, Blue
c)
Yellow, Blue, Pink, Red
36.
What color stars have the coolest temperature?
a)
Yellow
b)
Red
c)
Blue
37.
What color star is most common in the universe?
a)
Red
b)
Yellow
c)
Blue
38.
Large stars are usually:
a)
very hot and very bright
b)
not very hot and not very bright
39.
Small stars are usually:
a)
very hot and very bright
b)
not very hot and not very bright
40.
Stars have different life cycles based on their:
a)
Size (mass)
b)
Temperature
c)
Color
41.
After main sequence, what stage do low mass stars go through?
a)
Red Giant
b)
Red Supergiant
c)
Supernova
42.
After main sequence, what stage do high mass stars go through?
a)
Red Giant
b)
Red Supergiant
c)
Supernova
43.
What determines the color of a star? 
a)
It's size
b)
It's temperature
c)
It's composition
d)
They are all the same color 
44.
Larger stars (stars with more mass) have a longer life cycle. 
a)
True
b)
False
45.
A large cloud of gas and dust in outer space ejected by an aging star near the end of its life cycle.
What stage in the life cycle is this describing? 
a)
Main Sequence
b)
Planetary Nebula
c)
Black Hole
d)
Neutron Star
46.
What stage of the life cycle of a star is this? 
a)
Main Sequence
b)
Red Giant
c)
Black Hole
d)
Neutron star
47.
The HR Diagram shows a relationship of a star's surface temperature and its
a)
color
b)
size
c)
apparent magnitude
d)
absolute magnitude
48.
At 10,000 degrees Celsius, hydrogen begins to change into helium and energy is released in a process called
a)
supernova
b)
pulsar
c)
nuclear fusion
d)
nuclear fission
49.
Which of the following terms should be listed first chronologically? 
a)
Main-Sequence
b)
Protostar
c)
White Dwarf
d)
Red Giant
50.
Baby stars are born where?
a)
In nebulae
b)
In the vastness of space
c)
Inside larger stars
d)
None of these are correct
51.
Which star has the lowest luminosity?
a)
A
b)
B
c)
C
d)
D
52.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
53.
Which star is considered a Main Sequence Star?
a)
A
b)
B
c)
C
d)
D
54.
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
55.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
56.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
57.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
58.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
59.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
60.

What small, hot, faint objects are found at B?

a)

neutron stars

b)

black holes

c)

white dwarfs

d)

brown dwarfs

61.

What objects are found at C?

a)

Blue giants

b)

Red giants

c)

White dwarfs

d)

Main sequence stars

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