1 / 11

Chapter 26, Section 2

Chapter 26, Section 2. Vocabulary. Create flashcards and study the following words: Rotation Revolution Perihelion Aphelion Equinox Solstice. The Rotating Earth. The spinning of the Earth on its Axis is called ROTATION. Rotation creates Day and Night Evidence of Rotation—

lixue
Download Presentation

Chapter 26, Section 2

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. Chapter 26, Section 2

  2. Vocabulary • Create flashcards and study the following words: • Rotation • Revolution • Perihelion • Aphelion • Equinox • Solstice

  3. The Rotating Earth • The spinning of the Earth on its Axis is called ROTATION. • Rotation creates Day and Night • Evidence of Rotation— • Foucault Pendulum • Coriolis Effect • Day and Night

  4. Foucault Pendulum

  5. The Revolving Earth • Earth spins on its axis (rotation) and it also travels or REVOLVES around the sun • Complete revolution of the sun takes 365 ¼ days. • Every four years we add a day…leap year • Perihelion=point in orbit closest to the sun • Aphelion =point in orbit farthest from the sun

  6. Evidence of Earth’s Motion Evidence of Rotation Evidence of Revolution Over several weeks a constellations place in the sky will appear to change and at different times of year, different constellations will be visible. See pictures page 669 • If you watch the night sky over a couple of hours, the stars and constellation patterns appear to move in the sky • The moon and sun also appear to change places in the sky

  7. Measuring Time • Earth’s motion is the basis for measuring time • One day is 24 hours—the amount of time it takes Earth to rotate (spin on its axis) • One year is 365 ¼ days –the amount of time it takes to travel (revolve) around the sun

  8. Mayan Aztec Calendar • Ancient civilizations: • Egyptians first to use a solar year • Aztecs used a stone calendar to know when to plant • Julius Caesar began leap year • Modern Calendar: • 1500s, Pope Gregory XIII created a calendar to fit the seasons Roman

  9. Measuring Time • Time Zones—24 1 hour periods

  10. Seasons • Fall and Spring begin on an EQUINOX • Winter and Summer begin on a SOLSTICE • Brain Pop—Seasons and Solstice and Equinox

  11. Interactive/Assessment • Constellation Project! • With a Partner you will visit 3 stations to complete your worksheet: • Laptops • Books • Star Viewer Tubes • Both of your names should be on the paper • If time permits you will present your constellation to the class.

More Related