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1 Bell Ringer: Page 31 Yes...you are skipping pages!!!! 5 Minutes: Write about a geographic feature that interests you. Write down what you want to know about that feature and how you might answer your own questions. When done, read page 18 and 19 silently

2 Page Set-Up 1. Trim and tape in a new table of contents on top of the old one. JUST TAPE THE TOP!

3 Page Set-Up 1. Turn to page Label this page as your new title page Our Planet, Our Earth

4 Page Set-Up Page 27: Label Trigger Brainstorm at top of page and in corner. Add the timeline of lessons sheet you picked up today on the cart. Tape this timeline towards the bottom of the page.

5 Page Set-Up Page 28-29: Label this spread Aha Connections Additionally, you can add Parts 2-9 if you wish. Draw a diagram such as a light bulb on the center of this spread. Make sure you leave enough room to write down the essential questions for this unit.

6 Page Set-Up Essential Question: Page How do human actions modify the physical environment? How do physical systems affect human activity and living conditions?

7 You Tube Video

8 Annual Motion Core Concepts

9 Notes The Earth Begin notes on page 31 and extend notes on to page 33

10 Definitions Revolve - circular motion around another object in the center. Rotate- circular motion with the center of the circle inside the object. Orbit - path one object makes as it revolves around another. Axis - imaginary line between N and S Poles, tilted relative to its orbit.

11 Earth s Orbit Earth revolves around the sun once every days. Earth orbits the sun in an oval (elliptical) shape. Earth rotates, one complete spin, every 24 hours. Rotates towards the East. Earth s axis always points the same direction in space.

12 Why do we have seasons? Due to the tilt of the earth on its axis, the sun hits different parts of the earth and different intensities and at different times.

13 Seasons Equinox earth s axis tilts perpendicular to the sun 1. the point where everywhere on Earth the day and night are equal in length. 2. March and September Equinox

14

15 Seasons Solstice earth s axis tilts toward or away from the sun, extreme hours of day/night 1. Days are longest in one hemisphere and shortest in another. 2. Summer Solstice and Winter Solstice

16

17 Seasons (Northern Hemisphere) Fall Equinox Sept 23 Winter Solstice December 21 Vernal Equinox March 21 Summer Solstice June 21

18 Summer vs Winter When the surface of the earth is perpendicular to the sun, it receives the most sunlight per area (hot). When the earth s surface is at an angle to the sun, the sunlight is spread out over a larger area (cool).

19 The reason that we experience seasons is because the earth is tilted with respect to the sun. Summer is NOT caused by the earth being closer to the sun! The earth is actually closer to the sun during our winter than it is during our summer!

20

21 Spring Northern Hemisphere Northern Hemisphere Summer Southern Hemisphere Fall Sun Northern Hemisphere Winter Southern Hemisphere Winter Northern Hemisphere Fall Southern Hemisphere Summer Spring Southern Hemisphere

22 Compare and Contrast Solstice and Equinox 5 Min: Page 30 - Use a graphic organizer of your choice and compare and contrast solstice and equinox. i.e. Venn Diagram or Top Hat organizer **Use an elbow partner

23 Assess Your Understanding 1. If it is summer in the N. Hemisphere, what season is it in the S. Hemisphere? 2. How can days be short and cold in one hemisphere when they are long and hot in another?

24 Read page 20 and 21

25 Rotation in Earth Earth is spinning in space, or rotating on its axis. Each complete rotation takes about 24 hours. It is night on the side of Earth facing away from the sun. It is daytime on the side of Earth facing towards the sun.

26 Time Zones The governments around the world agreed to divide the world into standard time zones. Time Zone: area sharing the same time. Neighboring time zones are one hour apart

27

28 Prime Meridian located in Greenwich, England at the center of one time zone referred to as Greenwich Mean Time or Universal Time (UT).

29 International Date Line The time zone in which the day changes to the previous or next day. See page 21 of your text for illustration.

30 Page 32 Drasd Fill out the graphic organizer rotate vs. revolve and place on page 32 of ISN as a study guide.

31 Assess Your Understanding 1. What is the rotation of Earth? 2. If it is 8pm in NY, what time is it in Los Angeles?

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