Which event marks the beginning of a supernova?

When Iron begins fusing in the core of a star .

What is the nebular theory?

theory suggesting that stars, solar systems form from nebulas

Why do the outer planets have cores of liquid rock and large amounts of ice?

They formed too far from the sun to have liquid water

Why has our understanding of the Universe changed over time?

Better technology and understanding of scientific processes

accreting dust, clumps, planetesimals, and protoplanets

nuclear fusion begins at its core

How does redshifting confirm the Big Bang Theory?

It explains why the universe is expanding.

radiation left over from the early universe.

How does technology help us make new discoveries today?

new technology helps us collect new data, quicker

What makes Earth livable?

our planet is unique and "just right" for life

the growth or increase of size by gradual accumulation

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Astronomy Unit Review

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Earth Science Astronomy Unit Review #science #astronomy

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Questions 30

Answers

1
Where do heavy elements in our universe come from?
Nebulas and Supernovas
Supernovas and the Big Bang
The Big Bang and Stars
Nuclear Fusion and Supernovas
2
If something is redshifting, what is it doing?
Getting closer.
Getting hotter.
Moving away.
Getting colder.
3
Low energy raditation that pervades the entire universe
cosmic microwave background
gamma rays
redshift
solar flares
4
Which event marks the beginning of a supernova?
The collapse of a black hole.
The big bang in reverse.
When Iron begins fusing in the core of a star .
When a planetary nebula begins to collapse.
5
What is the nebular theory?
theory suggesting alien formation
theory suggesting formation of hypotheses
theory suggesting formation of dust bunnies
theory suggesting that stars, solar systems form from nebulas
6
In the nebular theory, nebular clouds must (blank) and particles must (blank) together.
rain, stay
clump, collapse
stick, rain
collapse, clump
7
Every element in space creates its own pattern in the spectral lines, like a fingerprint.
False
True.
8
Why do the outer planets have cores of liquid rock and large amounts of ice?
They formed too far from the sun to have liquid water
They formed too close to the sun.
They formed in the asteroid belt.
They formed inside the sun and shot out due to no gravity
9
Why has our understanding of the Universe changed over time?
Better technology and understanding of scientific processes
Better scientific claims.
It hasn't.
Better communication with other galaxies.
10
Cosmic (blank) Background Radiation. Fill in the blank.
Microwave
Melting
Blackground
Radio
11
What does the life cycle of a star depend on?
its color
its range.
the place in the universe
its mass
12
What information can we get from meteorites?
the age of all metals ever created
the age of our solar system
the age of the universe
the age of our sun
13
Based on observations of the universal expansion the age of our universe is...?
about 14 trillion
about 14 billion years old
about 1.4 quadrilion years old
about 14 million years old
14
The four inner planets are
rocky
ice
large
gassy
15
What direction is the object moving?
to the right
to the left
to the top
to the bottom
16
Planets form by
increasing temperatures of nuclear fusion masses.
accreting dust, clumps, planetesimals, and protoplanets
erupting volcanoes on exoplanets.
supernova explosions.
17
The two most abundant elements in the universe from the beginning and currently are...
helium and hydrogen
hydrogen and carbon
carbon and iron
helium and gold
18
A star is born when
nuclear fusion begins at its core
interstellar matter joins together
galaxies collide
it shines brightly
19
All stars in the universe are fueled by...
nuclear fission
nuclear fusion
iron cores
collapse of red giants
20
Stars life cycle depends on their mass.
False
True
21
We live in the...
the Milky Nesquick Galaxy
NCX 5gR2 galaxy
andromeda galaxy
Milky Way Galaxy
22
How does redshifting confirm the Big Bang Theory?
It explains why the universe is getting closer.
It explains why Mars is red.
It explains why the universe is expanding.
It explains why the universe is so dark.
23
CMB is...
The closest star to us.
the collection of recent energy waves.
radiation left over from the early universe.
what I am eating for dinner.
24
Supernova's occur in
High Mass stars
Low mass stars
all stars
hydrogen stars
25
How does technology help us make new discoveries today?
technology helps scientists limit their observations
new technology helps us collect new data, quicker
technology doesn't help us in any way shape or form
technology limits our abilities to learn
26
What makes Earth livable?
Earth is mostly habitable, thanks to Venus
There is no life on Earth
Earth doesn't have an atmosphere, but it does have the rest
our planet is unique and "just right" for life
27
Accretion is...
the connection between star and the big bang.
the growth or increase of size by gradual accumulation
the repulsion dust particles
the attraction of sugar and elements.
28
Our closest star is
Betelguese
Alpha Centari
Sirius
the Sun
29
The Doppler Effect is the changing of what?
smell.
speed
color
Frequency
30
Every "spot" in this picture is a
part of the Milky Way
star
planet
galaxy

Astronomy Unit Review Flashcards | StudBud