Sun and Planets

It is one of the oldest sciences in the world. It involves the study of all objects outside Earth's atmosphere.

• Biology

• Astronomy

• Earth Science

• Geography

It is the closest star to Earth and the center of the solar system.

• Ursa Major

• Rigel

• Sun

• 
  Betelgeuse

The sun is a hot ball of glowing gases composed of ______.

• hydrogen, helium and other gases

• oxygen, helium and other gases

• hydrogen, carbon dioxide and other gases

The sun keeps our planet warm enough for living things to thrive. It gives us light and heat energy.

• True

• False

List down the eight planets (in order) surrounding the sun and traveling along an orbit.

(a)  

These are the inner planets closest to the sun. They have a solid planetary surface which is composed mostly of dense, rocky, and metallic material.

• Terrestrial Planets

• Jovian Planets

These are the outer planets farther from the sun. They have very large masses composed mainly of hydrogen and helium.

• Terrestrial Planets

• Jovian Planets

It is the smallest planet and the closest to the sun.

• Mars

• Earth

• Venus

• Mercury

It is the only planet in the universe that is known to support life. It is the densest planet.

• Mars

• Earth

• Venus

• Mercury

It is the hottest planet. It's atmosphere is composed of carbon dioxide and sulfur oxide.

• Mars

• Earth

• Venus

• Mercury