WorksheetsAstronomy Unit Review
Total questions: 20
Worksheet time: 7mins
According to scientists, approximately how many billion years ago did the Big Bang occur?
3-6
11-15
17-20
20-25
According to scientists, what does the universe continue to do because of the initial Big Bang explosion?
contract
shrink
expand
stay the same
What process condensed the large cloud of gas and dust?
fission
fusion
gravity
inertia
During the process of fusion, hydrogen atoms are combined to make...
Helium
Oxygen
Nitrogen
Argon
Red shift of light from distant galaxies tells us...
Pluto is no longer a planet
The universe's expansion is reversing
The universe's expansion is ongoing
A black hole is at the center of our galaxy
Matter in the early universe was...
Evenly distributed
Unevenly distributed
Scarce
Nonexistent
According to scientists, what did the universe originally consist of?
A large, hot star that exploded
A dense, cool star that exploded
A small, hot, dense singularity
A small, cool, dense singularity
Stars begin their lives as a...
White dwarf
Supergiant
Nebula
Supernova
A massive star will become a __________________ when it begins to die.
Supergiant
Nebula
Protostar
Supernova
The hottest stars are what color?
Red
Yellow
White
Blue
A galaxy is...
The Big Bang
A group of stars, gas, and dust held together by gravity
A cloud of gas and dust
A singe star and the planets that orbit it
Which galaxy has a bulge of stars at the center, with arms extending outward like a pinwheel?
Spiral
Elliptical
Irregular
Quasar
Which galaxy has a disorganized appearance and is smaller than other galaxies?
Spiral
Elliptical
Irregular
Quasar
What are quasars?
Groups of stars
Groups of galaxies
An enormously bright center of a distant, young galaxy
An enormously bright center of a close, older galaxy
Identify the first 2 elements to form after the Big Bang.
Hydrogen & Helium
Hydrogen & Oxygen
Helium & Oxygen
Oxygen & Argon
Which type of stars are the element factories in our universe?
Blue Giants
Red Supergiants
White Dwarfs
Neutron Star
The formation of heavier elements is due to an extremely high level of ____________ which allows for further nuclear _________ reactions to occur.
fusion, energy
energy, fission
fission, energy
energy, fusion
A large cloud of gas and dust is know as a...
Planet
Star
Black Hole
Nebula
What process causes atoms to ignite and stars to be born?
Fusion
Fission
Gravity
Inertia
Which type of galaxy has only old stars and very little gas?
Spiral
Elliptical
Irregular
Quasar
