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38 Cards in this Set
- Front
- Back
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equatorial diameter of earth |
12756 |
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polar diameter |
12714 |
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the earth looks what |
like a marble not egg |
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the shape of the earth is what |
oblate spheroid almost perfect sphere bulges at the equator slightly flattened at poles slightly |
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the earth is relativly smooth why |
even though the mountains are high and the valleys are low compared to the huge size of the earth it actually seems smooth not bumpy |
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there are many models of the earth in what |
globes maps drawings |
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in the past some thought the earth was what |
flat it was a misconseption |
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some also thought the earth was the center of the what |
the solar system |
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"some also thought the earth was the center of the what."
this modal of the solar system is called what |
the geocentric modal |
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"some also thought the earth was the center of the what."
now we know that what is the correct model |
the heliocentric model |
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3 pieces of evidence that earth is an oblate spheriod |
photographs taken from space ships apear to sink as they travel past the horizon. the gravity readings at the poles are different at the equator |
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horizon |
the interface between the atmoshpere and the lithosphere |
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distance and gravity have a what relattionship |
inverse or direct |
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gravity at the poles is greater or less at the equator |
greater |
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the earth is what |
round and smooth |
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layers of the earth |
as the depth of those spheres increase the density of the spheres increases. |
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3 spheres of the earth |
atmosphere hydrosphere lithosphere |
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atmosphere |
layer of gasses its layered into 4 zones each zone has a boundry or interface called a pause the troposhphere is really the only layer that contains water its mostly composed of nitrogen and oxygen it contains aerosols: any suspended liquids and or solids |
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hydrosphere |
layer of liquid water covers 70% of earths surface its mostly composed of hydrogen and oxygen rivers and lakes can also contain dissolved gases, minerals, and life forms |
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lithosphere |
layer of rock that forms the solid outer shell 100 km thick upper part of the lithoshpere: crust the boundry in between : the MOHO lower part of the lithosphere: rigid mantle divided into puzzle pieces calles lithospheric plates |
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water / soil (sediment with organic material) covers what |
the crust |
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organic |
any material that is or once was living carbon hydrogen based |
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the earths interior begins just below what |
this rocky / solid lithosphere |
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locations positions on earth map reading |
this requires your knowledge of latitude and latitude they both are measured in degrees and minutes there are 60 minutes in 1 degree be sure to take notes on your ESRT |
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latitude |
distance North or South of the equator known as parallels range from 0 degrees - 90 degrees |
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longitude |
distance East or West of the prime meridian known as meridian range from 0 degrees - 180 degrees |
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when you travel towards the north and south poles what will happen to your latitude |
it will increase |
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the altitude of polaris = |
the latitude of the observer |
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altitude |
the angle above the horizon measured using a sextant |
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horizon |
the interface between the lithosphere and atmosphere |
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polaris |
the north star it only can be seen in the northern hemisphere |
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zenith |
point directly overhead |
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what would be the altitude of polaris in syracuse NY?? |
43 degrees |
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the earths rotates spins on its axis at a rate of what |
15 degrees /hour 360 degrees/ 24 hours 1 rotation/ day |
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evry hour the earth moves 15 degrees longitude creating what in what direction |
times zones in a west to east direction |
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that means meridians are typically labeld every how many degrees list |
15 |
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calculating time world wide one hour is every how many degrees |
15 degrees |
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west = time earlier or later
east = time earlier or later |
west = earlier
east = later |
