ASTRONOMY Essay Example | Topics and Well Written Essays - 500 words

ASTRONOMY - Essay Example The gravitational force will be greater if the object’s mass is greater. 7. Terrestrial planets are those that under the asteroid belt: Mercury, Venus, Earth and Mars. Jovian Planets are Jupiter, Saturn, Uranus and Neptune. Terrestrial planets are much smaller in size when compared to Jovian Planets. Jovian Planets take much longer time for revolving around the sun and rotating in their own axis. 8. Comets are made of ice, rock and different organic compounds where as meteorite is made of space rocks that are left by comets. When meteor enters earth’s atmosphere it ignites, which is called as meteor and when it hit earth it is called as meteorite. 9. One of the important theories for continental drift and plate tectonics is that Earth is constantly moving (revolution and rotation) and the landscapes have to adjust themselves to this phenomenon. Because of this process continental drift and plate tectonics are occurring. When carefully observed on globe the continents are once upon a time were one huge landscape. 10. The major surfaces of moon are craters, highlands, lighter and darker areas. The temperatures on lighter areas are very high and on darker areas very low. It is believed thousands of centuries ago moon was covered with volcanic eruptions. 11. Venus is much closer to sun than earth. That is the reason its atmosphere is very hot compared to that of earth. Most of its terrain consists of volcanoes that are taller than Mount Everest. Lava flows like a river in