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Earth&Space Science

QuestionAnswer
Earth and space science definition the study of physical earth and the universe around it.
geology the study of Earth itself
astronomy the study of the universe
meteorology the study of the atmosphere and the weather
oceanography the study of oceans
rotation the spinning on the axis: 24 hours
revolution spinning around the sun: 265.25 days
elliptical the orbit around the earth
average distance from the sun 93 million miles or 150 million km
atmoshere envelope of gasses around the planet; 78% Nitrogen 21% oxygen 1% other gasses
hydroshere all the water on earth
Gravity the force of attraction that exists between all matter
% of salt water 97%
% of fresh water 3%
uses of fresh water 85% in glaciers 3% is usable
Layers of earth crust, mantel, outer core, inner core
crust thinnest layer; first layer; 1% of the mass; 5-70 km thick
mantel largest layer; second layer; 200 m thick; 1600-4000°F
outer core liquid iron and nickle; third layer; 2200 km or 1300 m
inner core solid iron and nickle; fourth and final layer; 1200 km or 900 m thick; 5000°F or higher
causes of the seasons 1 the tilt of the axis 2 the rotation around the sun
summer solstice June 20-21; direct light on tropic of cancer
anatomical (fall) vertex September 22-23; direct sunlight equator
winter solstice December 21-22; direct sunlight on tropic of capricorn
vernal (spring) vertex March 21-22; direct sunlight equator
sir Isaac newton developed the laws of gravity
leap year every year has .25 of a day left, so every 4 years that equals 1 day which is added to February to make the 29th day
magnetic field without it nothing would be were it is
arctic circle north pole
antarctic circle south pole
name and date when earth is closest to the sun perihelion; January 3rd
name and date when earth is furthest away from the sun aphelion ; July 4th
Created by: 22reed.jad
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