Which list provides an accurate order for changing models of our solar system, starting with the oldest and ending with the most recent changes?

Question

(1 point)
O elliptical orbits, heliocentric, geocentric
O elliptical orbits, geocentric, heliocentric,
• heliocentric, geocentric, elliptical orbits
• geocentric, heliocentric, elliptical orbits

Answer 1

The correct order for changing models of our solar system, starting with the oldest and ending with the most recent changes, is:

• geocentric, heliocentric, elliptical orbits

This reflects the historical progression from the Earth-centered (geocentric) model, to the Sun-centered (heliocentric) model, and finally to the understanding of elliptical orbits as described by Kepler.

Answer 2

A video shows the objects in the solar system orbiting the sun. Why do objects orbit the sun? (1 point)
• The sun is releasing heat and pushing objects away.
• The sun is so massive that it has the most gravity.
• The sun is so bright that the objects are forced away.
• The sun is moving so quickly that other objects move around it.

Answer 3

The correct reason why objects orbit the sun is:

• The sun is so massive that it has the most gravity.

The Sun's immense gravitational pull keeps the objects in the solar system, such as planets, asteroids, and comets, in orbit around it.

Answer 4

What would decrease the gravitational pull between the sun and Earth?
(1 point)
• if Earth was closer to the sun.
• if the sun was twice its size.
• if Earth was twice its size.
• if the sun was farther away from Earth.

Answer 5

The correct answer is:

• if the sun was farther away from Earth.

According to the law of universal gravitation, the gravitational force between two objects decreases as the distance between them increases.

Answer 6

Suppose a person built a sandcastle of moon sand on the moon. What would that person find there a month later? (1 point)
the sandcastle would remain in place the same size that it was because the moon has no wind.
The sandcastle would have grown larger because moon sand particles
• attract other moon sand particles.
The sandcastle would have grown larger by collecting more sand particles because moon sand is blown by the wind.
The sandcastle would be much smaller because changing winds would have eroded much of the sand away.

Answer 7

The correct answer is:

the sandcastle would remain in place the same size that it was because the moon has no wind.

The Moon has a very thin atmosphere and essentially no weather, which means there are no winds to erode or alter the sandcastle over time.

Answer 8

How do outer planets differ from inner planets? (1 point)
• They have very large solid surfaces.
• They consist of a mixture of gases and liquid.
They are smaller than the inner planets.
• They are not different from the inner planets.

Answer 9

The correct answer is:

• They consist of a mixture of gases and liquid.

Outer planets (Jupiter, Saturn, Uranus, and Neptune) are known as gas giants or ice giants and are primarily composed of gases and liquids, whereas inner planets (Mercury, Venus, Earth, and Mars) are terrestrial and have solid surfaces.

Answer 10

Property

Venus Earth Mars Jupiter Saturn Neptune

Average Distance from the Sun (AU) 0.72

1.0
1.5
5.2
9.5
30
Length of Year (Earth years)
0.62
1.0
1.9
11.9
29.4
164.8
Time for One Rotation (Earth days) | 243

1.0
1.03
0.41
0.44
0.67
Mass (compared to Earth)
0.80
1.0
0.1
318
95
17
Surface Gravity (compared to Earth) | 0.90

1.0
0.38
2.53
1.06
1.14
Size (compared to Earth)
0.94
1.0
0.53
11.0
9.1
3.9
Average Surface Temperature (°C)
462
14
-62
-145
-140
-214
Number of Moons

1
2
79
82
14
Which planet is most similar in size to Earth?
(1 point)
• Mars
Venus
• Jupiter
• Neptune

Answer 11

The planet most similar in size to Earth is:

Venus

Venus has a size comparison of 0.94 relative to Earth, making it the closest in size. Mars is smaller at 0.53 times the size of Earth.