Learning Goals: 4. Complex Knowledge: demonstrations of learning that go aboveand above and beyond what was explicitly taught. 3. Knowledge: meeting.

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Presentation transcript:

Learning Goals: 4. Complex Knowledge: demonstrations of learning that go aboveand above and beyond what was explicitly taught. 3. Knowledge: meeting the learning goals and expectations. 2. Foundational knowledge: simpler procedures, isolated details, vocabulary. 1. Limited knowledge: know very little details but working toward a higher level. How do stars differ from moons and planets, and from one another? How does the classification of stars help us understand how they evolve over their lifetimes? What are the different types of stars? What happens when different types of stars die? Why is it important for us to understand stars?

Learning Goals: 4. Complex Knowledge: demonstrations of learning that go aboveand above and beyond what was explicitly taught. 3. Knowledge: meeting the learning goals and expectations. 2. Foundational knowledge: simpler procedures, isolated details, vocabulary. 1. Limited knowledge: know very little details but working toward a higher level. How do stars differ from moons and planets, and from one another? How does the classification of stars help us understand how they evolve over their lifetimes? What are the different types of stars? What happens when different types of stars die? Why is it important for us to understand stars?

If you have to take a test…. Tomorrow (short day) is the best day to come take it.

Main Star Characteristics Size Mass Radius Color Temperature Spectral class Lifetime

Of the stars in this image, which do you think are: Hottest? Coldest? Biggest in diameter? Smallest in diameter? Brightest? Least bright? What information did you use to determine these properties of the stars? Do you have enough information to determine all of these properties? If not, what other information would you need?

Temperature and color Wein’s law! Objects at different temperatures emit spectra that peak at different wavelengths Max = c/T(K) Sketch a visual representation of the following idea Hotter objects emit radiation at shorter wavelengths (high energy) so they will appear bluer Cooler objects emit most of their radiation at longer wavelengths (low energy), so they appear redder.

Stellar characteristics Spectral class Radius (sun=1) Mass Temp. Color Lifespan Examples Abundance O B A F G K M

Spectral class Temperature (kelvin) Color O +31,000 Blue B 10,000-31,000 Blue-White A 7,400-10,000 White F 6,000-7,400 Yellow-white G 5,300-6,000 Yellow K 3,900-5,300 Orange M 2,200-3,900 Red

Size of Stars http://apod.nasa.gov/apod/ap110222.html https://www.youtube.com/watch?v=HEheh1BH3 4Q

Look at your card Make a picture postcard of your star. Your postcard should: Point out the important and exciting features of the star Include a sketch or picture of the star highlight characteristics such as: color surface temperature mass diameter special features A - Red dwarf 2 - White dwarf 3 - Brown dwarf 4 - Yellow Dwarf 5 - White main-sequence star 6 - Red giant 7 - Pulsar 8 - Binary Star 9 - Blue supergiant 10 - Protostar J - Cepheid variable star Q - Neutron star K – Your Choice of the above