Q4

• The Earth's movement on it's axis is called rotation
• The Earth's orbit around the sun is called revolution
• The Earth moves counter-clockwise around the Sun
• The seasons are caused by the tilt of the Earth’s axis as it orbits the Sun.
• The Earth takes 24 hours to rotate on it's axis
• The Earth rotates 15° clockwise per day
• The Earth revolves around the Sun in a counterclockwise direction
• The Earth travels around the Sun in a path or orbit. This orbit has an elliptical shape
• It takes the Earth about 365.25 days to complete a revolution around the Sun
• The calendar we use today, the Gregorian calendar, only uses 365 days. So, to be in sync with the Earth's revolution, we use a leap year.
• A leap year is occurs every 4 years. It adds a extra day to the end of February.
• The term perehelion is used to describe the closest distance the Earth is to the Sun while aphelion is the farthest distance of the Earth to the Sun