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Exploring Earth
Ms. Stewart
June 18, 2003
Earth From Space
• From space, Earth is seen as one of the most
beautiful planets.
• Space photos show Earth with a lot of bright blues
and swirling white colors.
– The Blue is from the great amount of water that covers
Earth surface
– The white is the various scattered clouds on the Earth
Earth’s Closest Neighbor
• Earth has 1 known
moon, which is
actually a natural
satellite
• There are 238,970
miles between Earth
and the Moon
• The diameter of the
moon is 2,160 miles
Earth in Relation to the Sun
• Earth is the third planet from the sun
• Earth is 150,000,000 km from the sun or
93,000,000 miles!
• Earth is a planet, but
the sun is a star
• The Sun is the closest
star to the Earth!
Spinning Circles
• Earth orbits around the sun
• One full orbit around the sun takes 1 year
• Orbiting around the sun causes the changing
of seasons
• Earth also rotates on its axis, as it orbits
• It takes 23.93 hrs for one full rotation
• Rotating causes day and night
What Was That?
• Besides planets, you can find lots
of other fun things in space!
– Stars, the sun is the largest
– Meteors, piece of rock that enters the earth’s
atmosphere
– Comets, formed from ice, dust or gas, which
orbits a star
– satellites, both man made and natural
Earth’s Basic Facts
• Earth’s atmosphere is about
78% nitrogen and 21% oxygen
• Earth is the only known planet that sustains
human life
• Earth is the largest of the four inner planets
• The Earth’s Ozone Layer protects us from
the harmful rays of the sun!
• Earth’s Diameter is 7,926 miles
What Did You Learn?
• Why is the solar system important to us?
• In the order of planets, what number is
Earth?
• Is the moon close enough to ride our bikes
to?
• What is the difference between man made
and natural satellites?
• How does orbiting the sun affect our lives?
Where I found My Images
Google.com
–
–
www.dw-designs.net
image of earth with the sun in the background (basic facts slide)
Google.com
–
attadog.com/space/space.html
– image of all nine planets from google.com images (title page)
Google.com
– www.scholar.uwinnipeg.ca/.../Cosmology/ SpecialRelativity.htm
– planets orbiting the sun from Google.com images (title page)
Google.com
–
www.ameritech.net/users/paulcarlisle/ earthviewer.html
– image of sun light on earth from Google.com (spinning circles slide)
Google.com
– www.msss.com/earth/earth.gif
– image of earth in space (Earth from Space slide)
Google.com
– legislative.nasa.gov/earth.hrtml
– image of earth and the moon (Earth’s neighbor slide)
Research Sources
•
Astronomy Fact Pack from
www.learninghorizons.com
•
Houghton Mifflin, Discovery Works Science. The Solar System and Beyond. Pages B-34-B-46.