Earth, Moon, & Sun

Learn about Earth, Moon, and Sun! Understand rotation, revolution, and seasons.

The Sun Watch the video and answer the questions that follow. How long does it take light to travel 150 million km from the Sun to Earth? 24 hours 8 minutes 365 days Where is energy in the sun created? on it's surface in it's core below it's surface In what form does energy travel from the Sun to earth? it travels as light and heat it travels as light it travels as heat it travels as greenhouse gases Earth's Rotation and Revolution Watch the video and fill in the blanks in the summary below. The pull of the Sun's gravity causes the Earth to revolve around it. As the Earth spins about its axis, it revolves around the Sun in a nearly circular path called an orbit. The Earth is rotating around an imaginary line called its axis,which makes the Sun appear to move from east to west. The reason for day and night is that the Earth is rotating around its axis. So, to summarize each time the Earth rotates around its axis 1 day has been completed, and every time the Earth completes one revolution 1 year has been completed. One day is 24 hours long and one year is 365.25 days long. The Earth is tilted on its axis so that the north and south pole are not straight up and down, because of this tilt the amount of direct sunlight received at different points on the Earth changes throughout the year. This is why we have seasons. When the northern hemisphere experiences summer, the southern hemisphere experiences winter. Below are the two categories of rotation and revolution. Three vocabulary words belong to each category. Match the correct vocabulary word to the category. Rotation day and night 24 hours axis Revolution one year 365 days orbit Can you figure out the season that North America (hint: look for the North Pole) is in, label the Earth on the left and the right. Label the two earths with the season they are experiencing in North America. Click on the blue dots to type in your answer. Winter Summer View the diagram and match the definitions. Summer The time of year when sunlight is most direct. Fall and Spring Equinox December 21 and June 21 Solstice Equator The middle line of latitude.