1. Earth and Moon

2. Rotation and Revolution

3. Seasons on Earth Two reasons the Earth has seasons: 23.5 degree tilt
Revolution around sun

4. Third Rock from the Sun 70% water
Water in all three states (solid, liquid, and gas)
Supports Life
Oxygen rich atmosphere

5. How Old is the Earth? The Earth is thought to be 4.55 billion
years old

6. The Surface of Earth
Geologically Active with a surface that is constantly changing
Weathering and erosion
Plate tectonics

7. Atmosphere of Earth Oxygen rich
Blocks out most of the sun’s damaging rays
The atmosphere deflects millions of tiny and not so tiny meteors every day that otherwise would have hit the earth and us.

8. Our Moon

9. Surface of the Moon Maria(seas of lava Highlands Craters(caused by
collisions from
Asteroids)

10. Characteristics of our Moon
Gravity is only one-sixth as strong as Earth’s
Extreme temperatures can range from 100oC to -170oC
No air or liquid water
It has solid, rocky ground

11. How Big is the Moon? ¼ the diameter of the Earth (that’s
4 moons across
the middle of the
Earth)

12. Where is the Moon? The moon revolves around the Earth in a month
Approximately 385,000
kilometers from the Earth

13. How old is the Moon? About the same age as the Earth(4.5 billion
years old

15. Phases of the Moon
Caused by its position relative to the Earth and the sun.

16. Phases of the moon

17. Apollo Moon Missions
Apollo 11, 12, 14, 16, 17 landed humans on the surface of the moon
The six missions that landed on the moon returned a wealth of data and 400 kg of lunar samples.
Experiments included soil mechanics, meteoroids, seismic, heat flow, lunar ranging, magnetic fields, and solar wind experiments.

18. Apollo Moon Landings Neil Armstrong was the first man to set
foot on the moon.
moon landing.asx

19. The Sun Average size yellow star 110 times the diameter of the Earth
Approximely 4.6 billion years old

20. Where is the sun? Center of the solar system
93 million miles from the Earth

21. The Surface of the Sun The photosphere 60,000 degrees F on the surface
The sunlight that reaches Earth comes from the photosphere

22. Life on the sun Made of Hydrogen and Helium gases
The temperature are too hot
to support life(27,000,000 degrees F)
Since it is made of gas
there is nothing solid
to live on

23. Features of the Sun Prominence
Loops of gases that
link different parts of
sunspot regions

24. Features of the Sun Sunspots
Areas of gas on the sun that are cooler than the
gases around them
Sunspot cycle of years

25. Features of the Sun Solar Flares
An explosion of
Hydrogen gas from
The sun’s surface
That occurs when
Loops in sunspot
Regions connect
Causes magnetic storms
Increases solar wind

26. Life Cycle of the Sun

27. Historical Contributions in Earth-moon-sun
Earth-Centered Models
Aristotle ( BC)
-Greek philosopher and scientist
-Believed in an earth-centered universe
-Thought the heavens moved naturally and endlessly in a complex circular motion

28. Ptolemy (100-170 AD) Astronomer and mathematician
Believed the earth was stationary and was the center of the universe
Tried to solve the problem of retrograde movement of Mars
marsmovie.gif

29. Sun-Centered Models Copernicus (1473-1543) Believed in a sun-centered
universe (Heliocentric)
Earth orbits the sun in a circular motion
Did not publish his theory until his death because of the Catholic Church

30. Galileo (1546-1642) Built a telescope and discovered mountains and
craters on the moon
Observed the phases of Venus
Observed Sun Spots
Discovered Jupiter’s moon (4 largest)
Upheld Copernicus’s sun-centered theory
Place under house arrest for life by the Catholic Church due to his beliefs