Earth in space
This presentation is the property of its rightful owner.
Sponsored Links
1 / 6

Earth in Space PowerPoint PPT Presentation


  • 250 Views
  • Uploaded on
  • Presentation posted in: General

Earth in Space. How does the Earth move in space? What causes the cycle of the seasons on Earth?. How Earth Moves…. Rotation – spins on it’s axis Causes day and night One rotation = 24 hours Revolution – travels around the sun One revolution = one year (365 ¼ days)

Download Presentation

Earth in Space

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Earth in space

Earth in Space

How does the Earth move in space?

What causes the cycle of the seasons on Earth?


How earth moves

How Earth Moves…

  • Rotation – spins on it’s axis

    • Causes day and night

    • One rotation = 24 hours

  • Revolution – travels around the sun

    • One revolution = one year (365 ¼ days)

    • Every 4 years is a leap year (366 days)

    • Earth travels in an elliptical (oval) orbit around the sun


Seasons

Seasons…

Sunlight hits Earth at different angles

Earth has seasons because it is tilted on it’s axis

Each hemisphere is tilted toward the sun for part of the year (summer) and away from the sun for part of the year (winter)


Seasons cont

Seasons…(cont)


Solstices

Solstices…

Summer solstice (June 21) = Sun is farthest north of the equator in the Northern hemisphere, or farthest south of the equator in the Southern hemisphere (longest day)

Winter solstice (Dec 21)= Sun is farthest south of the equator in the Northern hemisphere, or farthest north of the equator in the Southern hemisphere (shortest day)


Equinoxes

Equinoxes….

Occur halfway between solstices

Day and night are both 12 hours long

Vernal (spring) = March 21

Autumnal (fall) = Sept. 22


  • Login