Stellar Evolution H-R Diagrams
(advanced readings http://www.ucolick.org/~woosley/ay112-14/texts/pols11.pdf)
Stages of star life – detailed —- Stellar_Evolution_Diagram_Answer_Key
There have been a number of scientific observations which led to the development of the Big Bang Theory. There observations are reported as observable fact without editorial judgement.
1] the spectra of light reaching us from distant stars appears shifted towards the red (lower energy) wavelengths.
2] there is an observable background radiation of 3 Kelvin everywhere we look.
Edwin Hubble – red shifts and the expansion of the universe
Learning objective:
To understand the distinction between climate an weather
To understand how low and high pressure areas affect local weather
To understand how storm fronts are formed
Do you know the difference between Climate and Weather?
Essential questions:
How thick is the atmosphere? What gasses are in the atmosphere? What are the 4 main layers of the atmosphere?
Where does space start?
Essential Questions:
What are waves?
What are the properties of ocean Waves?
What powers ocean waves?
What happens when waves reach the shore?
What are tides?
What’s the moon got to do got to with it?
sample board problems wavelength, period, frequency, amplitude
Sound’s speed in seawater is of particular interest to anyone trying to use sonar or other underwater exploration techniques. The speed of sound in sea water is, on average, about 1560 m/s, or 3490 mph. But ocean waves are much slower:
Wave velocity is the speed of the wave. Velocities of normal ocean waves are about 90 km/hr while tsunami have velocities up to 950 km/hr (about as fast as jet airplanes), and thus move much more rapidly across ocean basins.