What caused people to accept the geocentric model of the universe?(1 point)

Question

Responses

Measurements and mathematical models demonstrated that the planets orbit around the sun.
Measurements and mathematical models demonstrated that the planets orbit around the sun.

Telescopes allowed for a much more detailed view of the circular orbits of the planets.
Telescopes allowed for a much more 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.
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 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 argue that the planets do not orbit in circles around the sun.

Some scientists think that the universe will not keep expanding forever.
Some scientists think that the universe will not keep expanding forever.

Noticing that gravity will eventually pull all the planets and the universe back together.
Which idea describes the big crunch?(1 point)
Responses

The universe is not only composed of the objects that we can see.
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.
After the universe reaches its expansion limit, gravity will pull it all back together.

The universe goes through infinite cycles of expansion and contraction.
The universe goes through infinite cycles of expansion and contraction.

The Big Bang actually never occurred, and the universe must have a different origin.

Answer 1

Here are the answers based on your questions:

1. What caused people to accept the geocentric model of the universe?

   • Objects seem to move across the sky, and Earth did not feel like it was moving.

2. What triggered the cyclic model of the origin of the universe?

   • Some scientists think that the universe will not keep expanding forever.

3. Which idea describes the big crunch?

   • After the universe reaches its expansion limit, gravity will pull it all back together.

Let me know if you need any further information or clarification!

Answer 2

Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.

(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
There is a Response area, which means the star is Response area​​​​​​​ the sun.​​​​​​​

Answer 3

It seems you are referencing a specific task that likely involves analyzing spectrum readings from the sun and a star. However, I can't actually see the provided spectrum readings or the specific responses you're meant to choose from.

To help you with the comparison, I can generally describe some common points of differences between the spectrum readings of the sun and a star:

• The sun typically shows a continuous spectrum with absorption lines, indicating the presence of elements in the solar atmosphere.
• A star's spectrum might show different characteristics based on its temperature, composition, and distance. For example, it might exhibit different absorption lines or a different color index (indicating temperature).

If you can provide the specific spectrum readings or the response options you need help with, I'd be glad to assist you further!

Answer 4

Magnitude means brightness. Absolute magnitude tells us how bright a star is. What is the brightness of a blue star in the upper left corner of your H-R Diagram? (Use the left side numbers to guide you.)

(1 point)
Responses

10 to 5
10 to 5

0 to -5
0 to -5

-15 to -20
-15 to -20

20 to 15

Answer 5

In the Hertzsprung-Russell (H-R) Diagram, blue stars generally have high absolute magnitudes, which means they are very bright. The absolute magnitudes of blue stars are typically in the range of -15 to -20.

Therefore, the correct response for the brightness of a blue star in the upper left corner of your H-R Diagram is:

• -15 to -20