Реферат: Planets And Solar System Essay Research Paper

dioxide, nitrogen, argon, water vapor and oxygen. Mars also has

no magnetic field. ” Because the atmosphere of mars is so thin,

wind velocities up to several hundred Km per hour are required to

raise the dust particles during a dust storm, and these fast-

moving particles erode structures with a sand-blasting effect ”

(Grolier, 1992). Therefore, the surface is basically plain-like

and covered with large craters. There are also some areas where

the rock is ” jumbled.” The poles of Mars are iced over and the

temperature is about 160 – 170 degrees K. Mars also has its

share of volcanoes. Most of these volcanoes are shield

volcanoes. The surface is littered with winding channels that

resemble river channels that have dried up over time. Scientists

believe that water once existed and caused the formation of these

channels. It is said that, ” Mars remains the best candidate for

life in the solar system outside of the Earth,” and that is what

makes Mars so interesting to scientists.

Jupiter is the fifth planet and is the most massive of all

Planets 6

the planets in this solar system. ” Its mass represents more

than two-thirds of the total mass of all the planets, or 318

times the mass of the Earth. Jupiters density is quite low at

1.3 g/cubic cm.

The atmosphere of Jupiter contains water, ammonia, methane

and carbon. It is thought by scientists that there are three

cloud layers. The wind activity on Jupiter is quite fierce and

moves in jet streams parallel to the equator. The weather on

Jupiter is still very hard for scientists to understand. There

is not enough information to truly understand how the weather is

on this planet.