1 / 13

Unit 5, Topic 1

Unit 5, Topic 1. For Our Eyes Only. F rame of Reference. A frame of reference is a set of axes of any kind that is used to describe the positions or motions of things. Latitude and longitude Map coordinates. Basic Grade 6 Review – do not copy.

whitney-moss
Télécharger la présentation

Unit 5, Topic 1

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. Unit 5, Topic 1 For Our Eyes Only

  2. Frame of Reference • A frame of reference is a set of axes of any kind that is used to describe the positions or motions of things. • Latitude and longitude • Map coordinates

  3. Basic Grade 6 Review – do not copy • Celestial bodies , Constellations, planets • On each successive day, a given star rises and sets four minutes earlier than the day before.

  4. Sky Co-ordinates • Azimuth - the first angle is measured clockwise from north. • Altitude - measure the celestial body’s angle above the horizon in degrees. • These are the altitude-azimuth co-ordinates.

  5. Sky Co-ordinates • An astrolabe is a device used to measure the altitude of an object. • A compass is used to measure an object’s azimuth.

  6. 1. Look directly to the left (west). Max height is 90° - which star is about halfway up the sky?  A

  7. Astrolabe

  8. The Earth-Centred Model • Ancient peoples still believed that the stars circle around Earth. • This led to an Earth-centredor geocentric model of the universe.

  9. Ptolemy’s Model • Ptolemy changed Aristotle’s Earth-centredmodel. He added the idea of epicycles in an attempt to make Aristotle’s model work.

  10. The Sun-Centred Model • Nicholas Copernicus proposed a sun-centered view. • He thought that the Sun was the centre of our solar system and all planets went around the sun.

  11. The Sun-Centred Model • Galileo confirmed Copernicus’ model. • He made improvements to the telescope and was able to show that Copernicus was correct. • Brain Pop Galileo Galilei

  12. The Sun-Centred Model • This is known as the Sun-centredor heliocentric model of the universe.

  13. Moon is 140° from north. That is the azimuth. • Moon is 30° from the horizon – that is the altitude.

More Related