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The Earth in Space

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The Earth in Space Chapter 1, Section 2 The Solar System Solar System- Sun with 9 planets and other bodies revolving around. Earth 3rd planet from the sun. – PowerPoint PPT presentation

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Title: The Earth in Space


1
The Earth in Space
  • Chapter 1, Section 2

2
The Solar System
  • Solar System- Sun with 9 planets and other bodies
    revolving around.
  • Earth 3rd planet from the sun.
  • Orbit path traveled around the sun.
  • - earth takes 365 ¼ days
  • - pluto takes 250 years

3
Types of Planets
  • Rocky (earthlike)
  • - solid, mostly made of rock
  • Gaseous (Jupiter, Saturn, Neptune, Uranus)
  • - mostly made of gasses.

4
Sun, Earth, and Moon
  • Sun- 93 million miles from Earth
  • - 27 million degrees F
  • - life cannot exist without
  • Atmosphere layer of air surrounding Earth
  • - made of Oxygen and Nitrogen
  • - Holds in heat/ oxygen
  • - keeps out solar radiation

5
Cont.
  • Moon orbits earth
  • - takes 30 days to complete orbit
  • - no light/atmosphere

6
Earths Movement
  • Axis earth rotates around, imaginary line
  • - N and S poles
  • - 1 day 24 hrs.
  • Revolution complete orbit around the sun
  • 365 ¼ days
  • Leap year every 4 yrs due to ¼ years

7
Seasons and the Sun
  • Earth is tilted 23 ½ degrees on its axis
  • - causes seasons to change
  • Suns direct rays provide more heat than indirect
    rays
  • - indirect rays winter

8
Solstices and Equinoxes
  • Summer Solstice June 21, sun directly over
    Tropic of Cancer (N Hemisphere)
  • - longest day
  • Winter Solstice December 22, sun directly over
    Tropic of Capricorn ( S Hemisphere)
  • - Shortest day

9
Cont.
  • Equinoxes when the day and night are equal.
    (Autumn and Spring)
  • - March 21 and September 23
  • - Sun directly over Equator
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