MINDFULNESS PRACTICE BREATHE INTO YOUR BELLY INHALE THROUGH THE NOSE EXHALE THROUGH THE MOUTH

WORLD GEOGRAPHY MONDAY 8/31/15 Journal Topic: Why is it summer in New Orleans from June 21- September 22 every year?

Keep the Do Now question in mind as we read the lyrics with the song. Use the QR code on the paper to listen to it again later!

Planets moves through space in two major ways: rotation and revolution Rotation- the spinning its axis Axis – imaginary line through planet’s center and North and South poles. Rotation causes day and night Takes 24 hours for one rotation Revolution- movement of the planet around the sun.

 How many rotations of Earth take place in one revolution around the sun?

The tilt of the Earth is the main factor: Because the earth is tilted, it means that Earth gets sunlight at different angles at different times.

Earth has seasons because its axis is tilted as it revolves around the sun. (23.5° from vertical) The Earth is always tilted the same way, so sometimes it is toward the sun and sometimes it pointed away from the sun. As Earth revolves around the sun, the north end is tilted towards the sun for half of the year and tilted away the other half.

Summer and winter are caused by the Earth’s tilt not by changes in Earth’s distance from the sun (misconception). Earth is actually farthest from the sun during the northern hemisphere’s summer

 How sunlight hits the Earth affects how warm an area is.  Sunlight hits more directly and over a smaller area at the equator so it is warmer- these areas are called the tropics  Sunlight hits at an angle and over a greater area at the poles so it is colder

 North end of Earth’s axis is tilted toward the sun  Sun is higher in the sky and there are more hours of sunlight  Sun’s rays are more direct  It is summer in Northern Hemisphere  South end of Earth’s axis is tilted away  Sun is low in the sky, days are shorter than nights  Sun’s rays are more slanted  It is winter in southern hemisphere

 Southern Hemisphere receives most direct sunlight – their summer  Northern Hemisphere receives indirect sunlight rays – our winter

 Halfway between the solstices, neither hemisphere is tilted toward or away from sun  Noon is directly overhead at the equator  Day and night are equal lengths - about 12 hours each  Occurs twice a year around March 21(Vernal or spring equinox) and September 21 (autumnal equinox)

 Day when the sun is farthest north of the equator = about June 21 = Summer Solstice (longest da) in the Northern Hemisphere and Winter Solstice (shortest day) in Southern Hemisphere  Day when the sun is farthest south of the equator = about December 21= Winter Solstice (shortest day) in Northern Hemisphere and Summer Solstice (longest day) in Southern Hemisphere

 If Earth’s axis was not tilted, what would happen to the length of days over the course of a year? Would we have seasons?  You should be able to explain how the Earth’s position affects temperatures, night and day and the seasons. Give yourself a 0-5 rating in the lower right corner of your exit ticket.