1. Grade 9 Academic Science

2.  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.  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. They Might be Giants

5.  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!!!

8.  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.  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) http://www.youtube.com/watch?v=N5utQxtma2U

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