Earth

• Rotation - the movement of Earth around its axis.
• Earth rotates counterclockwise, from west to east, because of this direction of rotation, we observe the sun rises every day in the east and sets in the west.
• If you have experienced both daytime and night time, Earth has completed one rotation.
• The Earth rotates on its axis once every 24 hours or equivalent to 1 day.
• Globe is a good example to describe Earth's rotation.
• Revolution - the motion around the sun along its orbit.
• Earth completes one revolution around the sun for 365¼ days or one solar year.
• Perihelion - when Earth is at its closest point to the sun.
• Aphelion - when Earth is at its farthest point form the sun.
• Our Solar system has 8 recognized planets, each with its unique characteristics.
• The four planets closest to the sun - Mercury, Venus, Earth and Mars are the terrestrial planets.
• The gas giants - Jupiter, Saturn, Uranus and Neptune are larger planets.
• The sun is the center of the solar system.
• Mercury is the planet closest to the sun while Neptune is the farthest from the sun.
• Jupiter is the largest planet in our solar system.
• Mars is known as the Red Planet. It is red because the soil looks like rusty iron.
• Uranus and Neptune appear to be blue because of the presence of methane in their clouds.
• The correct arrangement of planets in our solar system is Mercury, Venus, Earth, Mars, Jupiter Saturn, Uranus, and Neptune
• What are the closest planets to the sun?

  Mercury, Venus, Earth, Mars
• What are the four gas giants?

  Jupiter, Saturn, Uranus, Neptune