A spiral galaxy can be described as what type of shape?(1 point)
Responses
oval
oval
no distinct shape
no distinct shape
triangular
triangular
pinwheel
27 answers
pinwheel
What lies at the center of the Milky Way galaxy?(1 point)
Responses
Earth
Earth
the sun
the sun
a black hole
a black hole
North Star
Responses
Earth
Earth
the sun
the sun
a black hole
a black hole
North Star
a black hole
How are asteroids and comets similar?(1 point)
Responses
Both orbit the sun.
Both orbit the sun.
Both are frozen.
Both are frozen.
Both are composed of rock.
Both are composed of rock.
Both are composed of gases.
Responses
Both orbit the sun.
Both orbit the sun.
Both are frozen.
Both are frozen.
Both are composed of rock.
Both are composed of rock.
Both are composed of gases.
Both orbit the sun.
At certain times of the year, five planets can be seen from Earth, including Mars and(1 point)
Responses
Neptune.
Neptune.
Juno.
Juno.
Saturn.
Saturn.
Uranus.
Responses
Neptune.
Neptune.
Juno.
Juno.
Saturn.
Saturn.
Uranus.
Saturn.
What caused people to accept the geocentric model of the universe?(1 point)
Responses
Noticing the gravity will eventually pull all the planets and the universe back together.
Noticing the gravity will eventually pull all the planets and the universe back together.
Measurements and mathematical models demonstrated that the planets orbit around the sun.
Measurements and mathematical models demonstrated that the planets orbit around the sun.
Objects seem to move across the sky, and Earth did not feel like it was moving.
Objects seem to move across the sky, and Earth did not feel like it was moving.
Telescopes allowed for a much detailed view of the circular orbits of the planets.
Responses
Noticing the gravity will eventually pull all the planets and the universe back together.
Noticing the gravity will eventually pull all the planets and the universe back together.
Measurements and mathematical models demonstrated that the planets orbit around the sun.
Measurements and mathematical models demonstrated that the planets orbit around the sun.
Objects seem to move across the sky, and Earth did not feel like it was moving.
Objects seem to move across the sky, and Earth did not feel like it was moving.
Telescopes allowed for a much detailed view of the circular orbits of the planets.
Objects seem to move across the sky, and Earth did not feel like it was moving.
What triggered the cyclic model of the origin of the universe?(1 point)
Responses
Some scientists think that the universe will not keep expanding forever.
Some scientists think that the universe will not keep expanding forever.
Some scientists began to use telescopes and mathematics to study the universe.
Some scientists began to use telescopes and mathematics to study the universe.
Some scientists found that the amount of radiation in space is not consistent with an explosion.
Some scientists found that the amount of radiation in space is not consistent with an explosion.
Some scientists argue that the planets do not orbit in circles around the sun.
Responses
Some scientists think that the universe will not keep expanding forever.
Some scientists think that the universe will not keep expanding forever.
Some scientists began to use telescopes and mathematics to study the universe.
Some scientists began to use telescopes and mathematics to study the universe.
Some scientists found that the amount of radiation in space is not consistent with an explosion.
Some scientists found that the amount of radiation in space is not consistent with an explosion.
Some scientists argue that the planets do not orbit in circles around the sun.
Some scientists think that the universe will not keep expanding forever.
Which ideas describe the big crunch?(1 point)
Responses
After the universe reaches its expansion limit, gravity will pull it all back together.
After the universe reaches its expansion limit, gravity will pull it all back together.
The big bang actually never occurred, and the universe must have a different origin.
The big bang actually never occurred, and the universe must have a different origin.
The universe goes through infinite cycles of expansion and contraction.
The universe goes through infinite cycles of expansion and contraction.
The universe is not only composed of the objects that we can see.
Responses
After the universe reaches its expansion limit, gravity will pull it all back together.
After the universe reaches its expansion limit, gravity will pull it all back together.
The big bang actually never occurred, and the universe must have a different origin.
The big bang actually never occurred, and the universe must have a different origin.
The universe goes through infinite cycles of expansion and contraction.
The universe goes through infinite cycles of expansion and contraction.
The universe is not only composed of the objects that we can see.
After the universe reaches its expansion limit, gravity will pull it all back together.
Use the excerpt from an online article to answer the question.
“While the big bang theory is the most popular modern theory of how the universe formed, it is incomplete.”
Which question does the big bang theory leave unanswered?
(1 point)
Responses
When did the universe form?
When did the universe form?
How did galaxies and stars form?
How did galaxies and stars form?
What is the temperature of deep space?
What is the temperature of deep space?
What is the future of the universe?
“While the big bang theory is the most popular modern theory of how the universe formed, it is incomplete.”
Which question does the big bang theory leave unanswered?
(1 point)
Responses
When did the universe form?
When did the universe form?
How did galaxies and stars form?
How did galaxies and stars form?
What is the temperature of deep space?
What is the temperature of deep space?
What is the future of the universe?
What is the future of the universe?
Which theory of how the universe formed is best supported by evidence of radio waves detected in space?(1 point)
Responses
steady state theory
steady state theory
big bang theory
big bang theory
heliocentric model
heliocentric model
big crunch theory
Responses
steady state theory
steady state theory
big bang theory
big bang theory
heliocentric model
heliocentric model
big crunch theory
big bang theory
Which inference can be made from the spectrum readings?
(1 point)
Responses
There is a red shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a blue shift, which means that the star is moving away from the sun.
(1 point)
Responses
There is a red shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a blue shift, which means that the star is moving away from the sun.
There is a red shift, which means that the star is moving away from the sun.
In three to five sentences, briefly describe how the big bang theory explains the origin and evolution of the universe.(4 points)
The Big Bang theory is a widely accepted scientific explanation for the origin and evolution of the universe. According to this theory, the universe began as an extremely hot and dense singularity around 13.8 billion years ago. The universe then underwent a rapid expansion, known as cosmic inflation, which created space, time, and matter. As the universe expanded and cooled, matter began to form, eventually leading to the formation of galaxies, stars, and other celestial objects. The Big Bang theory also explains the observed redshift of distant galaxies, suggesting that the universe is still expanding today.
In three to five sentences, evaluate the scientific evidence that supports the big bang theory and the steady state theory.(4 points)
The scientific evidence supporting the Big Bang theory is substantial. First, the observation of cosmic microwave background radiation, discovered in 1965, provides strong evidence for the initial hot and dense state of the universe. The abundance of light elements like helium and hydrogen also matches the predictions made by the Big Bang theory. Additionally, the redshift observed in distant galaxies supports the expansion of the universe.
On the other hand, the steady state theory, which posits a constant universe with continuous creation of matter, lacks substantial evidence. The observed cosmic microwave background radiation is inconsistent with the predictions of the steady state theory. The discovery of quasars also contradicts the steady state model's proposition that the universe has no evolution. Overall, the evidence overwhelmingly favors the Big Bang theory as the most credible explanation for the origin and evolution of the universe.
On the other hand, the steady state theory, which posits a constant universe with continuous creation of matter, lacks substantial evidence. The observed cosmic microwave background radiation is inconsistent with the predictions of the steady state theory. The discovery of quasars also contradicts the steady state model's proposition that the universe has no evolution. Overall, the evidence overwhelmingly favors the Big Bang theory as the most credible explanation for the origin and evolution of the universe.
summarize it in three sentences please
The Big Bang theory is supported by multiple lines of evidence, including the detection of cosmic microwave background radiation and the abundance of light elements. The observed redshift in distant galaxies further supports the expansion of the universe. In contrast, the steady state theory lacks substantial evidence and is inconsistent with observed phenomena such as cosmic microwave background radiation and the presence of quasars.
Use the scenario to answer the question.
An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to the Milky Way galaxy.
In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis.
An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to the Milky Way galaxy.
In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis.
Hypothesis: The new galaxy is moving away from the Milky Way galaxy.
One way to test the hypothesis is to analyze the redshift of the light emitted by the galaxy. If the light shows a redshift, it would indicate that the galaxy is moving away from us. Another way is to measure the apparent motion of the galaxy over a period of time. If it consistently shows an increase in distance from the Milky Way, it would support the hypothesis of the galaxy moving away.
One way to test the hypothesis is to analyze the redshift of the light emitted by the galaxy. If the light shows a redshift, it would indicate that the galaxy is moving away from us. Another way is to measure the apparent motion of the galaxy over a period of time. If it consistently shows an increase in distance from the Milky Way, it would support the hypothesis of the galaxy moving away.
1 answer