What caused people to accept the geocentric model of the universe? (1 point)
• Noticing the gravity will eventually pull all the planets and the universe back together.
• Objects seem to move across the sky, and Earth did not feel like it was moving.
• Measurements and mathematical models demonstrated that the planets orbit around the sun.
• Telescopes allowed for a much detailed view of the circular orbits of the planets.
B. 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)
• 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 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.
A. Some scientists think that the universe will not keep expanding forever.
Which ideas describe the big crunch? (1 point)
• After the universe reaches its expansion limit, gravity will pull it all back together.
O The universe goes through infinite cycles of expansion and contraction.
• The big bang actually never occurred, and the universe must have a different origin.
• The universe is not only composed of the objects that we can see.
A. 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)
O How did galaxies and stars form?
• What is the future of the universe?
• When did the universe form?
• What is the temperature of deep space?
O How did galaxies and stars form?
Which theory of how the universe formed is best supported by evidence of radio waves detected in space? (1 point)
• heliocentric model
О big crunch theory
• steady state theory
O big bang theory
O big bang theory
The correct answer is: Objects seem to move across the sky, and Earth did not feel like it was moving.
The acceptance of the geocentric model of the universe was primarily due to the observation that objects in the sky appeared to move across it, while Earth itself did not feel like it was moving. This led people to believe that Earth was stationary at the center of the universe, with all other celestial bodies revolving around it.
To arrive at this conclusion, people could simply observe the motion of celestial bodies like the sun, moon, and stars. By looking at the sky on a daily basis, they could see that these objects rose in the east, moved across the sky during the day, and set in the west. This apparent motion of the celestial bodies, coupled with the lack of any noticeable sensation of Earth's movement, led people to believe that Earth was fixed and everything else was circling around it.
It is important to note that the other options provided in the question do not accurately represent the reasons why people accepted the geocentric model. Noticing gravity's eventual pull, measuring orbits, or studying detailed views of the planets' orbits were actually advancements that eventually led to the rejection of the geocentric model in favor of the heliocentric model proposed by Copernicus and later supported by observational evidence from Galileo and others.