Chapter - Review:
- The sun is considered the "head" of the solar system.
- Moon diameter is just about a quarter of earth's diameter.
- The galaxy we live in is called the milky way.
- Small pieces of rocks which move around the sun are called meteoroids.
- Asteroids are the numerous tiny celestial bodies which revolve around the sun and are mainly found between the orbits of mars and Jupiter.
- The Moon takes approximately 27 days to revolve once around the earth.
- Earth appears blue from when seen from the outer space since it has over 2/3rd water.
- A sphere with its ends flattened at poles (just like earth) is called the geoid.
- venus is called "Earth twin" because it is similar to earth in its shape and size.
- The orbits of plants are elliptical in shape.
