Earth Bell Work

	BELL WORK FALL 2009 Bell work is part of your notebook grade. Why do bell work? To help us learn Earth Science! The questions review the previous days work, and some are taken from the UNIT Eseential Questions, which are always on the test.
DATE	UNIT TWO - ASTRONOMY
SEPT	UNIT TWO - ASTRONOMY
9	Copy and answer on PAGE 4 of your notebook. How do we determine if a star is moving toward or away from the Earth? What are the key features of four types of telescopes?
10	Copy and answer on PAGE 4 of your notebook. 1. What causes the seasons? 2. When does the Northern Hemisphere receive the most energy from the sun? 3. Name the moon phase you can not see 4. Name the imaginary plane that connects the Earth's orbit with the celestial sphere.
11	Class Review for Quiz
SEPT
14	On Page 4 of your Unit 2 notebook, sketch a picture of the sun and label all the layers . See page 685
15	absent
16	Copy and answer on PAGE 4 of your notebook What is the hottest layer of the sun? What is a sun spot? What creates the energy produced in the Sun? What layer of the sun can be seen only during an eclipse?
17	Study for Quiz
18	Copy and answer on PAGE 4 of your notebook 1. What is a galaxy? 2. Name three types of galaxies 3. Describe the following stages of a stars life- protostar stage main-sequence stage red-giant stage 4. How does a neutron star form?
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