1 / 14

The Earth-Moon-Sun System

The Earth-Moon-Sun System. Rotation vs. Revolution . Rotation – the spinning of a body on its axis Revolution – the motion of a body along a path around some point in space. Precession. The slight movement of Earth’s axis over a period of 26,000 years. Seasons.

knox-scott
Télécharger la présentation

The Earth-Moon-Sun System

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Earth-Moon-Sun System

  2. Rotation vs. Revolution • Rotation – the spinning of a body on its axis • Revolution – the motion of a body along a path around some point in space

  3. Precession • The slight movement of Earth’s axis over a period of 26,000 years

  4. Seasons • Caused because Earth’s axis is tilted 23.5 degrees • Summer – N. Hemisphere is farthest from sun • Winter – N. Hemisphere is closest to sun

  5. Moon Shine • The moon does not make it’s own light. It reflects sunlight.

  6. Waxing & Waning • Waxing – Light side gets larger • Waning – Light side gets smaller New Moon First Quarter Full Moon Third Quarter New Moon Animation

  7. Eclipses • Lunar: The shadow from Earth blocks the light from the sun. Lunar = Moon goes dark. • Solar: The shadow from the Moon blocks the light from the sun. Solar = Sun goes dark.

  8. Umbra & Penumbra • The Moon & Earth cast 2 shadows. The darkest is the Umbra. The lighter is the Penumbra.

  9. The Origin of the Moon • It is widely believed that the moon was formed when a Mars sized object smashed into the early Earth.

  10. The Lunar Surface • Craters – round depressions in the surface of the moon – most were produced by the impact of rapidly moving debris

  11. Highlands – densely pitted, light-colored areas that cover most of the lunar surface

  12. Maria – dark, smooth surfaces – originated when asteroids punctured the lunar surface, letting magma bleed out

  13. Lunar Regolith – a soil-like layer of gray debris covering the surface of the moon – made up of rocks, glass beads, and fine lunar dust

More Related