Notes Chapter 1

I. Scientific MethodA. Hypothesis=

B. Law=

C. Theory=

II. Technology in ScienceA. Electronic storage advances made __ possible.

B. Electromagnetic Spectrum=

III. ConstellationsA. # of visible stars _______B. Asterism=

C. Constellation=

1. # of constellations ____2. developed by

3. why developed

IV. Celestial MotionsA. Two explanations for observed motion

1.

2.

B. How do we know which is correct?

C. Earth spin direction ________1. causes stars to

2. rate of star motion ___

D. Rotation of Earth1. defined=

2. rate=

E. Revolution of Earth1. defined=

2. rate=

3. solar daya. defined

b. length

4. sidereal daya. defined

b. length

5. effect on constellations

F. Celestial sphere1. what?

2. Celestial equator=

3. Celestial poles=

4. Ecliptica. Defined

b. Size

c. what ‘travels’ there?

d. Significance of Zodiac?

5. right ascensiona. defined

b. values c. zero point

6. declinationa. defined

b. valuesc. zero point

7. Axis Tilta. Pointing drection

b. Value

c. effect on us

8. Solstice=

9. Equinox=

10. Solar analemma- explain picture

11. Precessiona. Defined

b. Rate

c. effect

V. Moon A. How much of the Moon is always lit by the Sun?

B. Why are we able to see the Moon?

C. Cause of Moon Phases?

D. Waxing=

E. Waning=

F. Crescent=

G. Gibbous=

H. Synchronous Rotation=

I. Sydnodic Month1. defined

2. length

J. Siderial Moon1. defined

2. length

VI. EclipsesA. Lunar

Sketch positions of Earth, Moon and Sun

1. Penumbra

2. Umbra

B. SolarSketch positions of Earth, Moon and Sun

C. Annular Solar Eclipse- Why?

D. Which visible over wider area, solar or lunar & why?

VII. Transit=