1.
a) The earth was called blue planet due to so much water. But it is also called green planet because of its environmental view. Plants and trees thrive in the earth.
b) Earth spins because of the way it was formed. Our Solar System formed about 4.6 billion years ago when a huge cloud of gas and dust started to collapse under its own gravity. As the cloud collapsed, it started to spin.
c) The planets all formed from this spinning disk-shaped cloud, which continue this rotating course around the Sun after they were formed. The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
d) Yes, these are the planets that also take part of our Solar System. These go by the names of Neptune, Jupiter, Mars, Mercury, Satrun, Uranus and Venus.
e) They form our Solar System.
f) Our galaxy goes by the name of MilkyWay.
