Is There Life Out There? Our Solar System (and

beyond)• Draw a picture of what you think life

would look like on another planet, if it existed.

• Describe why you drew that image.• What makes Earth a great place for

life?

Universe

•Milky Way (spiral)

Galaxy

Solar Syste

m

http://www.fromquarkstoquasars.com/galaxy-classifications-from-dwarfs-to-spirals-and-beyond/

http://upload.wikimedia.org/wikipedia/commons/0/0f/Earth%27s_Location_in_the_Universe_SMALLER_%28JPEG%29.jpg

Where are we?

http://nineplanets.org/

How did it form? Basic facts

99.8% of mass 100x diameter of

Earth 5,527oC 92.1% H, 7.8% He Plasma Sun today

Main source of Earth’s energy

Our Sun

http://www.nasa.gov/images/content/524990main_FAQ10_full.jpg

Definitions Thermal energy Temperature Heat

Types of heat Occur in different parts of the Sun

Core Dense, hottest Hydrogen fusion Conduction

How do we get the Sun’s energy?

Radiation Energy transfer

(heat) Light waves Also how energy

gets to Earth Energy moves

slowly Thick layer

Radiation Zone

1. Video Write down your observations Why did that happen?

2. How are conduction and radiation similar?

3. Give a real-life example of conduction, and radiation making an object warmer.

4. What is something surprising that you learned about the Sun?

Daily Review #1

Convection Zone

Uses convection In liquids and gases Material heated

(conduction) Rises….why? Sinks….why? Repeat Where else does

this happen? Moves more

quickly in this layer

Photosphere Visible surface

Chromosphere Red High speed gas

Corona Hot Outermost layer Seen during an eclipse

Outer Solar Structure

Dark Cooler than

nearby areas

Appear in pairs

Sunspots

http://oneminuteastronomer.com/1018/sunspots/

5. Complete sun structure worksheet, except #9 and 10

6.Describe the difference between radiation, convection and conduction.

Daily Review #2

http://www.electronics-tutorials.ws/electromagnetism/magnetism.html

What is a magnetic field?

What causes a magnetic field? Organized

charged particles In the Sun?

Because it’s a plasma

Constantly changes

Sun’s Magnetic Field

http://www.cbsnews.com/8301-205_162-57597396/

Intense magnetic field Lines go

out and in

Sunspots and Magnetic Field

Predictable cycle 11-years

Next maximum = 2013, very weak

Minimums Last = 2008/2009 Also low # of

prominences, flares Cooler climate on Earth

Sunspot Cycle

http://academic.emporia.edu/aberjame/student/johnson5/sunspotcycle.html

Different rotation rates

Magnetic field lines get wound up

Rotation and Magnetic Field Lines

Solar flares High energy Explosive Twisted until it

snaps Prominence

Reversal of poles in that area

Follow magnetic field lines into space

Loops/arches

Surface Features – Disturbances of the

Magnetic Field

http://www.space.com/11506-space-weather-sunspots-solar-flares-coronal-mass-ejections.html

http://spacefellowship.com/news/art21967/the-strange-case-of-solar-flares-and-radioactive-elements.html

Coronal Mass Ejections Massive eruption Rearranges magnetic field

lines One hit on 9/16/14 Effects on Earth

Danger to astronauts Damage electronics

Satellites Electrical system

CME

http://stereo.gsfc.nasa.gov/browse/2013/10/14/index.shtml

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Hot, high speed, plasma streams

Corona expanding Constant

Particles constantly hitting Earth

Disrupt magnetic field shape of Earth

Create aurora

Solar Wind

Borealis or Australis Interaction of

particles and magnetic field Particles drawn to

poles Colors

Elements Altitude

Constantly changing

Intensified after CME

Video

Aurora

http://www.public.iastate.edu/~sdk/fick2003/october.html

http://news.nationalgeographic.com/news/2011/09/pictures/110930-northern-lights-aurora-borealis-bright-colors/#/space163-aurora-borealis-from-space_41077_600x450.jpg