EARTH SCIENCE Mid-Year Exam Review KEY IDEAS with IMAGES
CYCLIC Cyclic means a cycle. A repetitive pattern that is predictable. Examples: TIDES SEASONS MOON PHASES
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.
Circumference of Earth
Latitude & Longitude
Altitude of Polaris = LATITUDE
EARTHS ROTATION West to East 1 Rotation = 24 Hours (1 day)
Foucault’s Pendulum – proves Earth’s rotation
Altitude of Sun & Length of Day Longest Day of Year EQUINOXES = 12 HOURS OF DAY / 12 HOURS Of NIGHT Shortest Day of Year
1 Revolution = 365 days (1 year) EARTHS REVOLUTION 1 Revolution = 365 days (1 year)
Eccentricity of Elliptical Orbit
Planet’s Orbital Velocity & Distance to the Sun
SEASONS
Moon’s revolution = 27.3 days (esrt) Lunar Cycle = 29.5 days
Doppler Effect / Red Shift
Time Zones
Quartz is hard because it has a tetrahedron structure
Sedimentary Rocks
Igneous Rocks
Metamorphic Rocks
Surface Area increases the rate of weathering
Stream velocity depends on slope & discharge
Stream Velocity & Erosion/Deposition
Deposition of Sediments
Glacial Evidence
USE YOUR EARTH SCIENCE REFERENCE TABLES!