Chapter 3 and 4 Astronomy Test Tuesday- January 27th, 2015

Describe the aspects related to the sun: Core- Photosphere- Nuclear Fusion- Corona- Sunspots- Solar Flares-

Geocentric Model Explain the Geocentric model of the Universe- _______________________________________ ___________________________________________________________________________ What were the four main reasons that people held on to this idea for so long? ______________ 2. _______________ 3. ________________ 4. ______________ Define Heretic- Define Persecuted- Diagram and label the Heliocentric model of the Universe in the space below

Heliocentric Model Explain the Heliocentric model of the Universe- _______________________________________ ____________________________________________________________________________ Who were the ancient astronomers/thinkers that finally contributed enough evidence for the Heliocentric model to be accepted? _____________________, _____________________ and _______________________ Diagram and label the Heliocentric model of the Universe in the space below

The Planets Draw a diagram of the Solar System and label the 8 planets in order from closest to furthest from the sun. List one interesting fact from your notes about each planet.

Earth Facts Period of Rotation_______________ this causes _________ and _________ Period of Revolution________________ this is measured a 1 ________ on Earth The distance from the Sun to Earth is measured as 1 ______________ __________ Earth has ______ moons Earth is the only known planet to have ________________ and ______________ on it

Star Sequence Life/Death Recreate your Star Life/Death Sequence from your spirals from start to finish. Make sure to have all of the stages for both Low/Medium Mass stars and High Mass stars. Also, include a description of each stage in the sequence.

Astronomy Facts What is a Spectrograph used for in Astronomy?___________________________________ ____________________________________________________________________________ What is the difference between absolute and apparent brightness of a star?_____________ Define Planetary Nebula- ____________________________________________________ What two conditions does the brightness of a star depend on?_______________________ and _______________________. Define Light Year- _________________________________________________________ How old to Astronomers estimate our sun to be?__________________________________