Presentation on theme: "Today’s Agenda… Bellringer: Identify each as rotation or revolution (this is not multiple choice) A. Takes 24 hours B. Spins on Axis C. Takes 365 ¼ days."— Presentation transcript:
1 Today’s Agenda…Bellringer: Identify each as rotation or revolution (this is not multiple choice)A. Takes 24 hoursB. Spins on AxisC. Takes 365 ¼ daysD. Causes day and nightNotes on Seasons
9 Seasons on Earth Sunlight hits the Earth At the equator sunlight hits directlyCloser to the poles, sunlight hits at an angle and energy from the sun is spread outThis explains why it is warmer at the equator than at the poles
10 Seasons on EarthThe Earth has seasons because its axis is tilted as it moves around the sunTilted away from the sun for half of the year and toward the sun for the other halfWhen the North is tilted toward the sun they have summer and the South has winterSeasons have nothing to do with Earth’s distance from the sun
12 Earth in June The North is: The South is: Tilted toward the sun Has more hours of daylightSummerThe South is:Tilted away from the sunLess hours of daylightWinter
13 Earth in December The South is: The North is: Tilted toward sun Summer Tilted away from sunWinter
14 Solstices in the North Summer Winter Sun is directly overhead in the NorthJune 21Longest amount of daylight of the yearWinterSun is directly overhead in the SouthDecember 21Shortest amount of daylight of the yearFor the Southern Hemisphere, the dates are reversed.
15 Earth in March and September Halfway between solsticesNeither hemisphere is pointed toward or away from the sunFor two days of the year the noon sun is directly overhead at EQUATOR
16 Earth in March and September These days are known as an equinoxLength of daylight and dark is about the sameMarch 21 vernal (spring) equinoxMarks the beginning of springSeptember 23 autumnal equinoxMarks the beginning of fall
17 Exit Slip! What is the difference between a solstice and an equinox?