Science(Space) questions?(: Easy 10 pts.?

Question

(main ques) *** Why are planets near the Sun rocky and planets away from the sun mostly gas? ***

Extra(You don't have to answer these, just put them anyways.);
The only planet that crosses over another planets orbital path is ________

Who discovered that planets have elliptical orbits? ____

What is the shape of planetary orbits? ____

This planet is its color due to sulfur dioxide. ____

This planet's rotation is nearly parallel to the plan of orbit. ____

This planet has no moons, no atmosphere, but its surface has many craters.____

Answer 1

Why does everyone assume this is a test or homework question? It could just be a question of personal interest.

Oh well, I trust you'll be scholastically honest and look for good sources on this information.



Main question: This is a little tough. You could argue that the outer planets are rocky as well, since they are believed to have massive rocky centers. This comes from the fact that during the time the solar system originated, there was more material in this outer region to smash together and form planets. Once the sun ignited, it blew away most of the primordial nebula from which the solar system originated. But if the outer planets had centers with more mass than the inner planets, it would make sense that they, having stronger gravitational pulls, would be able to hold onto more of the nebula gasses than the inner planets would.



Extras:

Pluto's orbit crosses over that of Neptune, but since they've decided Pluto isn't a planet, I guess that knowledge isn't valid anymore.



Johannes Kepler.



Planetary orbits have a slightly eccentric elliptical shape and they orbit in nearly the same plane.



Venus. The atmosphere is mostly CO2 and contains thick sulfur dioxide clouds.



Uranus.



Mercury.

Answer 2

I guess reading a text book or doing their own homework is just too much to ask of young people these days. So much easier to just ask on Yahoo and get someone else to do it for you (I just wish I could find some way to get away with that at work).



Why are planets near the Sun rocky and planets away from the sun mostly gas? Because the heat and solar wind of the newly-formed sun blew the volatiles out of the inner solar system.



The only planet that crosses over another planets orbital path is - none in our solar system. Pluto is the only object that crosses another planet's orbit but Pluto is no longer a planet.



Who discovered that planets have elliptical orbits? Johannes Kepler (this is Keplers' First Law of Motion).



What is the shape of planetary orbits? - didn't you read the question right before this one - it had the answer right there.



This planet is its color due to sulfur dioxide - boy, that is a really badly worded question. Venus is the only planet in our solar system with any significant amount of sulfur dioxide in its atmosphere.



This planet's rotation is nearly parallel to the plan of orbit - parallel to its plane of orbit means the planet would be tilted over by 90 degrees. The planet that is tilted over the closest to 90 degrees is Uranus (tilted by 98 degrees) - Uranus is basically rotating on its side.



This planet has no moons, no atmosphere, but its surface has many craters. Mercury (how can anyone over the age of 10 not know this one?)

Answer 3

The shape of a planetary orbit is an Elipse



The only planet that crosses over another planets orbital path is Neptune. It crossess over the orbital path of Pluto. (meaning that SOMETIMES Neptune is the furthest planet from the sun.)



Who discovered that planets have elliptical orbits? Johan Kepler



What is the shape of planetary orbits? Elipse



This planet is its color due to sulfur dioxide. Venus. (The atmosphere is yellow due to the amount of sulfer dioxide)



This planet's rotation is nearly parallel to the plan of orbit. Mercury



This planet has no moons, no atmosphere, but its surface has many craters. Mercury

Answer 4

Time for me to be a smart-***



The only planet that crosses over another planets orbital path is: None now since Pluto is no longer considered a planet.



This planet has no moons, no atmosphere, but its surface has many craters: None. It has been discovered that Mercury does in fact have a minuscule atmosphere.



My answer served no point other than to amuse myself :P

Answer 5

1. What's your favorite quote? If at first you don't succeed, skydiving is not for you. 2. What's your favorite song? I have 2: 1800zombie - Taco Party Panic! At the Disco - London Beckoned Songs About Money Written By Machines 3. Are you having a good holiday break? No, not really. My camera broke. Sniffle sniffle tear tear. :[ 4. What's your favorite school subject? Science. Explosions! Really! 5. What sport are you best at? It's a tie between baseball and volleyball. :] 6. Would you rather be caught dancing or singing? Singing. Me singing always gets people to laugh. I'm not sure that's a good thing though. 7. What's your most embarassing moment? Ahhh! Too many! - I ran into the boy's locker room because I thought it was the girl's. The boys made rather sexual movements towards me. Then the gym teacher walked in. - My first period (5th grade), let's just say I wasn't prepared and I was wearing new khaki shorts... - I was laughing and then I started snorting, and then my nose started bleeding! All over my friend's test papers!! 8. What's your favorite book? NOT TWILIGHT!!!!! A girl lended me that and then told me everything that happened. I threw it at her. I hope it hurt. My favorite book is One Fish, Two Fish, Red Fish, Blue Fish. And yes, I AM a sophomore. :] 9. If you had one wish (no wishing for more wishes) what would you wish for? A new pair of Converses. . . no! Pink tips in my hair! No! Ummm, how about being less undecisive? 10. What's your zodiac sign? Aquarius. :] Go water, go water.

Answer 6

I rather you save the 10 points and do your own homework!

Answer 7

well isabel if you got all of the answers to your test given to you, then you wouldn`t learn anything! Besides, I can`t answer any of these questions. In fact, half of these are just statements, not questions...

Answer 8

not sure about the first



Extras:



1) Pluto

2) Kepler

3) ellipse

4) mars

5) not sure

6) mercury

Answer 9

how about you do your own homework and stop asking others for help