Objectives: S.W.B.A.T.

Discuss and importance of the sun and

general properties of the sun

Define distance to the sun

Understand the composition of the sun

Have an idea of how large the sun is

compared to Earth and relation in our solar

system

Activities:

Warm-up

Finish climate map

Notes/discussion on properties of the sun

Sunspot graph

work on any missing work (work on

notebook to be ready to turn in)

Sun and Season

Chapter 29 and 26(sec. 2)

The Sun

- our average middle-age yellow star contains

more than 99% of all the matter in the solar

system. (center of the solar system)

holds all planets in orbit by its gravity

provides almost all energy found on

Earth

made of gas 70% hydrogen 29%

helium 1% other gases

Distance from Earth = 93 million miles or

150 million kilometers.

The distance from Earth to the sun is called

an Astronomical Unit – (A.U.)

it takes 8 minutes for light to travel this

distance.

Diameter of the sun is 110 times the

diameter of the Earth.

http://www.youtube.com/watch?v=iJiZkcqf14g

http://www.youtube.com/watch?v=iJiZkcqf14g

Mass is 333,000 times greater than

Earth.

Density = ¼ that of Earth – reason why sun

is less dense than the Earth is because it is a

ball of gas

SUN AND SEASONS

http://prezi.com/l_c1zg274e9e/the-sun-amp-

seasons/

http://prezi.com/gevshvlv-omj/the-sun/

http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/l_c1zg274e9e/the-sun-amp-seasons/http://prezi.com/gevshvlv-omj/the-sun/http://prezi.com/gevshvlv-omj/the-sun/http://prezi.com/gevshvlv-omj/the-sun/http://prezi.com/gevshvlv-omj/the-sun/http://prezi.com/gevshvlv-omj/the-sun/

I have secrets

You may not know

about me !