Earth Systems
What are the 4 earth systems?
lithosphere, hydrosphere, atmosphere, biosphere
What is Geocentric Theory?
Earth center of solar system with sun and planets are orbiting Earth.
How long is the earth’s orbit around the sun?
365.24
How long does it take moon to go through its phases?
29.5 days
What occurs when a celestial body, blocks the sun from another celestial body?
an eclipse
God
What is the shape of the earth’s orbit?
Elliptical
Moon orbiting earth and moon reflecting light of sun
What is a solar eclipse?
moon passes in front of sun during new moon phases, causing moon's shadow to fall on earth
What are the 2 most abundant elements in the atmosphere?
Nitrogen and Oxygen
What is the heliocentric theory?
Sun center of solar system with planets orbiting
What causes different parts of planet to receive different amounts of sunlight.
Axis tilted
How much of the moon is always lit and dark?
half lit, half dark
What is a lunar eclipse?
Earth's shadow covers the face of the moon, during a full moon.
What are 2 types of crust?
Continental and oceanic
the region around a start in which life can exist is called
Habitable zone
When the sun gets equal day and night it is called?
equinoxes
What direction does the moon orbit around the earth?
Counterclockwise direction
What are the 2 parts of shadows?
Umbra- dark inner part, Penumbra- outer part, not completely dark
Name 2 purposes of the atmosphere?
Respiration, Photosynthesis, Temperature regulation, Protection
List 3 reasons earth is a just right planet
ideal temp, size, location, amount of water, chemical composition, tilt, plate tectonics
The earth’s nearest point to the sun is called the ______ and the furthest point to the sun is called _______.
Perihelion and Aphelion
What are 8 phases of moon?
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent
What are the 2 types of western calendars?
Julian and Gregorian