1. The Earth’s Layers, Axis, & Plate Tectonics

2. Milky Way Galaxy

3. Our Solar System

4. Earth’s Layers The Earth is made of 3 layers-
crust
mantle
core (inner and outer)
The circumference of the earth at the equator is 24,902 miles
The circumference of the earth at the poles is a bit shorter - 24,860 miles
Equatorial bulge caused by Earth’s spin and sun/moon’s gravity

5. Layers of the Earth

6. What is the diameter?
It is the distance from one side to the other.

7. What is the circumference of the Earth?
The distance around the Earth.
Almost 25,000 miles

9. Size of the Earth

10. Earth Stats 93 million miles from sun
While we're hurtling through space at nearly 67,000 mph, we're also spinning around in circles at over 1,000 mph!
The Sun is a fusion nuclear reaction- it powers the whole system.

12. Sun Provides light, heat, and energy.
Compressed hydrogen and helium gas
10,800 degrees F

13. Earth’s axis Earth is divided into hemispheres-
Equator divides N & S
Prime Meridian divides E & W
Earth’s Axis- inclined (tipped) 23.5° - causes seasons- the uneven distribution of heat causes ocean currents and the weather

16. Movement of the Earth
Rotation of the Earth
23 hours 56 min.
1 day

17. http://www. sciencenetlinks. com/interactives/messenger/psc/PlanetSize

18. Revolution of the Earth
One trip around the sun.
364 ¼ days
1 year

19. Tilt & Temperature

20. Distance from Sun
Minimum Distance from Sun: (91 million miles or 147 million kilometers)
Maximum Distance from Sun: (94.5 million miles or 152 million kilometers)

22. Assignment: Describe the position of the Earth through each season.
Change of Seasons and Tilt of Earth
The season is fall.
The direct rays of the sun shine at equator.
Day and night are equal because the Earth is not tilted toward or away from the sun.

27. Continental Drift
Earth’s crust is broken up into plates which float around on magma and bump into each other.
Plates move at a rate of between ½ to 4 inches annually
“Inside our planet” (4:03)

28. Continental Drift
Convergence- when 2 plates come together, forming mountains
Subduction- when 1plate slides under the other
Divergence- when magma rises to the surface, creating new ocean floor- sea floor spreading
Transform- when 2 plates slide against each other- fault line
Continental rift- when a continent is pulled apart

29. Interactive earthquake/tectonic plate link
“The Earth’s Plates” (4:18)
Tectonic plates review

47. Landforms
Create a map of your own country. Choose 10 landforms to label on the map. Define them on the back and provide a real world example. Color the map. Good Luck!
Archipelago, bay, canal, canyon, cape, channel, cliff, continental shelf, continental divide, delta, fork, river source, river mouth, glacier, gulf, harbor, highland, hill, island, isthmus, lake, mountain, ocean, peak, peninsula, plain, plateau, sound, strait, swamp, tributary, valley, volcano, fjord