Unit 1 Flashcards
Evidence of Earth’s Rotation
Foucault pendulum
Coriolis effect
Coriolis effect
Coriolis effect
The ocean currents deflect to the right in the northern Hemisphere and left in southern Hemisphere
Foucault pendulum
Foucault pendulum
The pendulum appears to change position throughout the course of the day
In reality the earth is rotating making the ground move
Constellations
Change position because of earths rotation
We see different types depending on the season
Seasons
Earth revolves around sun counter clockwise in 23.5 degrees axis
Position of earth effects the seasons
Np TILTS to sun = summer
Np TILTS away from sun =winter
Solar system
Terrestrial and Jovian planets.
4.6 billon years ago
Evidence of Big Bang
Dipper red shift
Cosmic background radiation
Abundance of light elements
Law of equal areas (2nd law of planetary motion with eccentricity)
Aphelion
Perihelion
Orbital velocity
Describes how an object’s speed varies in its orbit.
Aphelion: slower orbital velocity, weaker gravitational pull
Perihelion: planet moves faster, stronger gravitational pull
Orbital velocity: The speed a planet travels while completing an orbit
Third law of planetary motion
The further a planet is from the sun the longer it takes to complete a revolution
Low lat.
Equ. 90 degrees
Sun directly overhead and always high in sky through all seasons
Mid lat
New York 41 degrees
Summer sun is highest and longest
Winter sun is lowest and shortest
High lat
90n North Pole
Sun has low path all year
Tropic of Cancer/Capricorn
23.5 degrees
Arctic/Antarctic
60 degrees
Solar noon: summer, winter, vernal
Summer-62
V.E.-42
Winter-16
