help on the solar system please?

Question

1. How are the heliocentric and geocentric models of the solar system different?

2. what contributions were made by Copernicus and Kelper changed out understanding of the solar system?

3. what are the main features of the inner and
outer planets?

4. what are the characteristics of other planerary bodies?

5. what are the conditions for living things on Earth?

6. Why do Mars and Europa are thought to be good possible places to search for evidence of life?

Answer 1

1. Heliocentric models place the sun at the center of the solar system; geocentric has the Earth at the center.

2. They discovered that the strange movements of the planets could be explained if Earth revolved around the sun also.

3. Inner planets: Rocky, dense worlds, with heavy iron cores. Outer plants: Mostly made of gases; very large.

4. Those in the Oort cloud and Kuiper belts are left over from the creation, and made of ice & rock. Objects too far away from each other to form very large planets, and the source of many comets.

5. We live in an atmosphere where liquid water can exist. Most, if not all, living things on Earth depend on water in some form.

6. Mars because of the thin atmosphere, and the evidence of water left behind on the surface. Europa because it's thought to contain oceans beneath it's icy crust. Internal heat due to it's tidal pull around jupiter may allow conditions for life to develop.

Answer 2

1. Heliocentric - the sun is the center of the system, geocentric - the earth is the center of the system. Before Galileo proved that the sun is the center of the system westerners believed that the earth was the center of the universe
2. Copernicus wrote the book - de revolutionibus orbium celestium which discussed the orbit of heavenly bodies while Kepler wrote the mathematics of orbital motion during the time of Galileo.
3. Inner planets are small and solid, outer planets large, gaseous and with multiple moons.
4. other planetary bodies are small and prone to being knocked off their orbit. among these are asteroids and comets.
5. the conditions for living things on earth are gravity, the solar and lunar cycles, oxygen, carbon dioxide, water, gravity and magnetism
6. Mars and Europa are the right size (compared to earth) and have water

Answer 3

1 & 2. Geocentric theory as propounded by Copernicus is outdated as it assumes the earth as the center of the solar system with planets including sun moving around it. Heliocentric theory defined by Kepler and refined by Newton has sun as the center of solar system.

3. The inner planets mercury and venus are extremely hot and the outer planets
from jupiter onwards are gaseous and very cold.

4,5,6. As per present knowledge only earth has water which can sustain biological life. Recent studies have shown that mars has water sorces under its surface. Traces of water has been found on europa and titan. But it is difficult to say whether biological life can survive in such hostile temperatures despite presence of water.

Answer 4

You know, if you spent just a few minutes on wikipedia (or read your text book) you'd find the answers (and a lot more).

1. Helio - sun. Geo - the Earth. Centric - centres on.
So you can probably figure it out.

2. Both helped support and prove heliocentricity.

3. Inner are small and rocky. Outer are very large and most gas (around small rocky cores). Outer planets all have many more moons than the inner, plus they also have ring systems (the inner planets don't).

4. Not sure what you mean - other planetary bodies could mean asteroids, meteoroids, comets, dust. What they all have in common is they are not massive enough to be spherical in shape.

5. Depends on what life you mean. For most life water and oxygen are required. But plants do very well without oxygen. And there are bacteria that can thrive in ice.

6. Both are believed to have water (either as liquid or as ice).

Answer 5

1, geo is that the earth is the center of the universe, helio is that the sun is the center of the universe
2. copernicus was the first to suggest the sun was the center, and kelper helped prove him correct
3.the inner planets are rocky and smaller than the gas giants that are the outer planets
4.could be that they dont have the required circumstances and atmosphere to support life
5.we have oxygen in our atmosphere, our atmosphere protects us from most of the uv rays from the sun, we also have water.
6.there is traces of water, in Europa ice, or what used to be water on these.

Answer 6

That is a lot of answers for only 10 points! Is this a homework assignment?

Answer 7

the inner planets before jupiter are more solid I think.

Answer 8

Are we doing your homework?