1. Tuesday 9/23 Pass your homework in 2) Warm Up:
2 items: 1) Stapled Section Reviews
2) Plasticity Activity Questions
2) Warm Up:
Label the Earth’s layers in the diagram
Which zone is thought to be composed of solid iron?
Which zone accounts for 1% of Earth’s mass?
A. _____
B. _____
C. _____
D. _____

2. 2.2 Movements of Earth

3. Journal #1 For the terms Rotation and Revolution.
How are they similar?
How are they different?

4. Rotation vs. Revolution
Rotation: Spinning on axis
Examples
ice skater in a spin
Top or dradle spinning

5. Revolution: movement around a set point
Earth’s revolution around the sun results in seasons

6. Perihelion: When Earth is the closest to the sun.
Aphelion: When Earth is the furthest away from the sun.

7. Journal #2
What causes seasons?

8. Journal #2 What causes seasons?
Revolution around the sun and the change in angle that the sun’s ray’s strike earth.

9. Seasons
The angle at which the sun’s rays strike the surface of the earth
changes as the earth orbits around the sun.

10. We experience Summer in the Northern Hemisphere when the Earth is on that part of its orbit where the Northern Hemisphere is oriented more toward the Sun
the rays of the Sun strike the ground more directly

11. Precession
The direction that Earth’s axis points slowly changes in a circular motion.

12. 2.3 Artificial Satellites
Satellite: an object in orbit around another object
Journal #3 List a couple of examples of Satellites

13. 2.3 Artificial Satellites
Satellite: an object in orbit around another object
The moon is a satellite of earth
Artificial Satellites: man made objects that are launched into to space

14. Journal # 4
List as many uses for satellites that you can think of.

15. Uses of artificial satellites
Meteorological - weather information
Communication - radio, phone, and tv signals
Navigation- GPS (global positioning systems)
Scientific

16. Orbits of Satellites
Geosynchrous Orbit: Rotate in the direction of Earth’s rotation.

17. Polar Orbit: Movement from pole to pole

18. 3.1 Finding Locations on Earth
Latitude
Longitude
Great Circles
Finding Direction

19. Longitude or Latitude???

20. Latitude or Longitude???

21. Latitude Distance north or south of the equator Parallels
Circles that run east to west
Describe the position north or south of the equator

22. Longitude Distance East or West of the prime meridian Meridians
Semicircle running from pole to pole
Used to describe East or West locations
Prime meridian is established as 0°.

23. Great Circle Any circle that divides a sphere into halves
The shortest distance between two points on a sphere

24. Finding Direction Geomagnetic Poles Geographic Pole
Points on Earth’s surface just above the poles of Earth’s imaginary magnet
Geographic Pole
based on Earths axis of rotation

26. The End !!!