1 / 10

Earth and Space Science 14.7 The Sun: An Important Star

Grade 9 Academic Science. Earth and Space Science 14.7 The Sun: An Important Star. Quick Facts. t he center of our solar system – heliocentric model. t he Sun has many different layers – each performing different activities.

maylin
Download Presentation

Earth and Space Science 14.7 The Sun: An Important Star

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. Grade 9 Academic Science Earth and Space Science14.7 The Sun: An Important Star

  2. Quick Facts • the center of our solar system – heliocentric model. • the Sun has many different layers – each performing different activities. • the layers are composed of gases – the sun has no solid surface, however it does have structure (layers).

  3. The Reactions • nuclear fusion is the process that produces energy in the Sun • the temperature and pressure are so high that hydrogen nuclei combine to form helium nuclei

  4. Structure of the Sun They Might be Giants

  5. The Sun’s Surface Features • Sunspots • A dark region of cool matter on the photosphere caused by a twist in the Sun’s magnetic field • Vary in size and colour • Solar Flares • Gases and charged particles that are blasted above an active region of the Sun’s photosphere • Extremely hot – tens of millions of degrees Celsius • Can cause power outages here on earth!!!

  6. Sunspots and Solar Flares

  7. Solar Flares – Scary and Cool!

  8. Solar Winds • The Sun’s corona is constantly releasing electrically charged particles into space. • They travel at speeds of 400 km/sec and are called ‘Solar Winds.’ • Earth’s magnetic field channels these excited particles toward the poles – this results in the AURORAS

  9. Auroras http://www.youtube.com/watch?v=N5utQxtma2U • coloured lights in the sky produced when solar wind comes in contact with Earth’s magnetic field and the atmosphere • known as the Northern lights when seen over the North Pole (Aurora Borealis)

  10. Homework: • Read pg. 452 - 453 • Fill in the Handout • Answer #1 – 4 , 7 on pg. 453 They might be Giants

More Related