1. EARTH SCIENCE Mid-Year Exam Review
KEY IDEAS with IMAGES

2. CYCLIC Cyclic means a cycle. A repetitive pattern that is predictable.
Examples:
TIDES
SEASONS
MOON PHASES

3. OBLATE SPHERIOD The Earth is not a perfect sphere but very close!
You can NOT tell by looking at it that it is NOT a perfect sphere!
Roundness Ratio is .997
The equatorial diameter is slightly larger than the polar diameter.

4. Circumference of Earth

5. Latitude & Longitude

6. Altitude of Polaris = LATITUDE

7. EARTHS ROTATION
West to East
1 Rotation = 24 Hours (1 day)

8. Foucault’s Pendulum – proves Earth’s rotation

9. Altitude of Sun & Length of Day
Longest Day of Year
EQUINOXES = 12 HOURS OF DAY / 12 HOURS Of NIGHT
Shortest Day of Year

11. 1 Revolution = 365 days (1 year)
EARTHS REVOLUTION
1 Revolution = 365 days (1 year)

14. Eccentricity of Elliptical Orbit

15. Planet’s Orbital Velocity & Distance to the Sun

16. SEASONS

17. Moon’s revolution = 27.3 days (esrt)
Lunar Cycle = 29.5 days

19. Doppler Effect / Red Shift

20. Time Zones

22. Quartz is hard because it has a tetrahedron structure

23. Sedimentary Rocks

24. Igneous Rocks

25. Metamorphic Rocks

27. Surface Area increases the rate of weathering

30. Stream velocity depends on slope & discharge

31. Stream Velocity & Erosion/Deposition

32. Deposition of Sediments

33. Glacial Evidence

34. USE YOUR EARTH SCIENCE REFERENCE TABLES!