A n I nterview with M r. S ol Questions you answer on your whiteboard Notes you write in your notebook Title for today’s notes: Our Sun.

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Presentation transcript:

A n I nterview with M r. S ol Questions you answer on your whiteboard Notes you write in your notebook Title for today’s notes: Our Sun

A n I nterview with M r. S ol How does the sun fit into the galaxy? Draw your explanation on your whiteboard

A n I nterview with M r. S ol The sun describe its job as just sitting around making hydrogen into helium. Whiteboard Question: What is this process called?

Fusion: Lighter nuclei (like Hydrogen) are fused together to form heavier nuclei (like Helium and other elements) and release energy

A n I nterview with M r. S ol The sun mentions the tragic death of a star right in our neighborhood. Can stars die?

A n I nterview with M r. S ol The sun says he's made up of the right stuff. What is that? Hydrogen, Helium and other elements in plasma state of matter plasma: very hot gasses made of positive ions and negative electrons

The Sun’s Interior Central Core: hottest, densest part (15 million degrees, 12 times more dense than Lead) – where energy is produced by fusion Radiation Zone: particles here re-radiate energy made in the core – Radiate: to emit energy in the form or rays or waves

Convection Zone: turbulent layer of gasses that is stirred by convection. – Convection: transfer of heat in a liquid or gas in a circular motion – Gasses emit energy as they reach the surface

Use information from the interview to locate the sun Sketch the diagram and add the sun’s location on your whiteboard

The Milky Way Galaxy

The Planets

The Sun’s Surface & Atmosphere Photosphere: (sphere of light) – Glowing plasma – Emits energy – Sun Spots – cooler regions – Solar Flares

Sun spots Appear dark due to difference in temperature – Umbra – darker area – Penumbra – lighter region around the umbra. Average size is about the same size as the Earth

Solar Flares What is a solar flare? Use words and a picture

Solar Flares Very large explosions; plasma interacts with magnetic field Heat to several million degrees F Release as much energy as a billion megatons of TNT Occur near sunspots

Chromosphere: (sphere of color) – Above Photosphere – Reddish glow – Only seen during solar eclipse Corona: (crown) – Streams of high temp plasma – Only seen during eclipse

WDMA WDMA xioQtwZcJj_9clLz7Bggso7qg2PDj xioQtwZcJj_9clLz7Bggso7qg2PDj

Ticket to Leave: F L A R E

Relative Size of Sun & Planets If the Sun were the size of a basketball: – Earth would be the size of a pea 107 feet away – Mars would be the size of a bb 164 feet away – Jupiter would be the size of a ping pong ball 550 feet away – Saturn: 1020 feet away – Uranus: 2050 feet away – Neptune: 3100 feet away – Pluto: grain of salt 3300 feet away A mile is 5280 feet

Star Life Cycle Vocabulary Red Giant Supernova White Dwarf Black Hole Protostar Hertzsprung-Russell Diagram (H-R Diagram) Apparent Brightness Nebula Neutron Star Main Sequence

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