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Astronomy
Page 2
Questions (9,718)
Radiation from Active Galactic Nuclei (AGN) is the main source for which cosmic background(s)? (Select all that apply)
3 answers
asked anonymously
261 views
A quasar with an observed luminosity of L=1012L⊙ is shining at the Eddington limit, with a net efficiency of 10%.
What is the
4 answers
asked by
M
922 views
Which statement best describes the movement of galaxies in the universe?(1 point)
Galaxies are moving toward each other, with
3 answers
asked anonymously
69 views
A video shows the objects in the solar system orbiting the sun. Why do objects orbit the sun?
The sun is releasing heat and
12 answers
asked by
Give me answers pls 😢
2,479 views
What galaxy is the Earth part of?
Milky Way The Milky Way can be classified as which type of galaxy? Spiral What is the name of
7 answers
asked by
Natalie
2,035 views
Kepler's First and Third Laws Quick Check
Hi! please keep in my mind that answers vary for each school. and be careful not to
6 answers
asked by
Noodles
2,337 views
An astronomer notices increased chances of solar energetic particles in the ionosphere. Who should be notified of this
4 answers
asked by
Julian
1,109 views
In 3-5 sentences, analyze why Aristotle's and Ptolemy's models were accepted for more than a thousand years in spite of being
5 answers
asked by
um
972 views
Venus has the smallest orbital eccentricity of any of the planets. What is the eccentricity of Venus?(1 point)
Responses 0.8040
7 answers
asked by
yamomma
189 views
How are asteroids and comets similar?(1 point)
Responses Both typically have tails. Both typically have tails. Both are composed
1 answer
asked by
Lettuce?
72 views
The distance from Earth of the red supergiant Betelgeuse is approximately 643 light-years. If it were to explode as a supernova,
4 answers
asked by
Anonymous
3,873 views
A spiral galaxy can be described as what type of shape
4 answers
asked by
Zeno
466 views
Some quasars (quasi-stellar radio source) have the largest red shifts ever observed. If this phenomenon is due to cosmic
5 answers
asked by
Amy
1,490 views
Select the correct answer from the list.(1 point) To form a nebula, Select Answer pulls matter together or causes Select Answer
15 answers
asked anonymously
197 views
The final section, "When Is the Next Solar Eclipse?," contributes to the overall meaning of the text by providing concrete
1 answer
asked anonymously
108 views
The Moon has a diameter of about 3480 km and an orbital radius of about 384 400 km from the centre of Earth. Suppose that the
5 answers
asked by
Anonymous
6,091 views
Which spectral class does a star fit into if it has a surface temperature of 20,000 K?
4 answers
asked by
Jinny
759 views
Select the correct answers from the list.(1 point)
Comparing temperature changes at different stages of the universe's life
7 answers
asked by
Connexus Gal
2,254 views
Kepler's first and Thrid law quick check
1Which is the best description of Earth’s orbit? (1 point) A.almost circular
7 answers
asked by
Naruto
3,756 views
Which shape does our galaxy have? (1 point)
Responses irregular spiral elliptical circular
6 answers
asked by
Captain Bella
1,068 views
The period of revolution of a planet around the sun is the time it takes for the planet to complete one orbit of the sun. The
5 answers
asked by
Larry
5,618 views
an astronaut is to be fire into an elliptical orbit about the eathr having a minimum altitude of 800km and maximum altitude of
10 answers
asked by
Anonymous
3,467 views
How can a planetary nebula be identified? Select 2 correct answers.
a. dark area b. diffuse edges c. spherical shape d. central
10 answers
asked by
Connexus Student
153 views
Drag each item to the correct location.
geocentric: Heliocentric: A. includes five planets B. includes eight planets C. the
2 answers
asked anonymously
88 views
Question 1 A)How do emission and reflection nebulae differ?(1 point) Responses contain remnants of stars contain remnants of
7 answers
asked by
pipsqueaks
174 views
Which of the following describe Aristotle's model of the solar system? Select the three correct answers.(2 points)
Responses Each
2 answers
asked anonymously
92 views
Which sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory?(1 point)
Responses
3 answers
asked by
billy bob joe
203 views
A model of the solar system shows the sun as a loaf of bread. What size is everything else in this model?(1 point)
Responses the
3 answers
asked by
that one dumb kid
73 views
Which of these phrases describes the sun?
Class G yellow star Class A white star Class M red star Class O blue star
7 answers
asked by
an axolotl <3
3,915 views
Where is the moon located in relation to Earth and the sun when it is a first-quarter moon? (1 point)
perpendicular to Earth and
6 answers
asked by
69
2,164 views
Animation shows a complete revolution of the earth around the sun. What happens during this time
5 answers
asked by
Sally
758 views
The Moon orbits Earth every 27.3 days. Determine the angular velocity of the Moon, in degrees per day and in radians per day.
The
6 answers
asked by
Anonymous
6,100 views
What caused people to accept the geocentric model of the universe?(1 point)
Noticing the gravity will eventually pull all the
9 answers
asked by
name
3,399 views
Which orbital shape did most scientists in the early 1600s think the planets of our solar system have?
10 answers
asked by
Lukethedrifter
3,183 views
Do the phases of the moon affect how much of the moon is illuminated?
I said yes because that's what causes us to have the
5 answers
asked by
Bryce
2,299 views
Use the scenario to answer the question.
An astronomer discovers a new galaxy using a telescope. The astronomer wants to
5 answers
asked by
please help me
4,774 views
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or
6 answers
asked by
Anime_is_cool
2,426 views
If Earth took 500 days to orbit the sun instead of 365, how would the seasons be different?
6 answers
asked by
Jennifer
1,094 views
Drag and drop the words into the correct locations.(2 points)
Put responses in the correct input to answer the question. Select a
3 answers
asked by
Jordyn
314 views
How did Kepler develop his second law of motion?(1 point)
Responses He invented a telescope that was strong enough to view all
25 answers
asked anonymously
132 views
Which factors are most likely to affect whether a galaxy will evolve by merging with a second galaxy? Select the two correct
3 answers
asked anonymously
77 views
How do emission and reflection nebulae differ?(1 point)
Responses hard line edges hard line edges interactions with light
3 answers
asked by
sleepy
99 views
Animation shows a complete revolution of the Earth around the sun. What happens during this time?(1 point)
Responses The moon
3 answers
asked anonymously
59 views
Why do the stars and the constellations in the sky appear to change positions throughout the night and throughout the year?(1
2 answers
asked anonymously
93 views
What will happen when the Andromeda galaxy and the Milky Way galaxy collide sometime in the next five billion years?
(1 point)
1 answer
asked by
Blue
64 views
What prevents the planets in our solar system from floating away?(1 point)
Responses Earth's gravitational pull Earth's
1 answer
asked by
lover
24 views
Use the scenario to answer the question.
A student creates a chart to describe Earth’s solar system in the Milky Way galaxy.
9 answers
asked by
storm chaser and conexus student
849 views
What did gravity create when 99% of the gas and dust materials were gathered into the center of a flattened disc during the
11 answers
asked by
Valeria
1,966 views
Why do objects orbit the sun?
12 answers
asked by
pleasehelpidontwanttofail
11,043 views
The percentage of the moon's surface that is visible to a person standing on the Earth varies with the time since the moon was
4 answers
asked by
Jillian
4,739 views
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