GeoLogic Mapping C

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freed2003
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Re: GeoLogic Mapping C

Post by freed2003 » October 24th, 2020, 11:06 pm

yup yup
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Re: GeoLogic Mapping C

Post by UTF-8 U+6211 U+662F » October 25th, 2020, 7:59 am

Define and give an example of an equal-area map projection.

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Re: GeoLogic Mapping C

Post by freed2003 » October 27th, 2020, 12:20 am

An equal-area map projection is one that preserves the area of the region as it is on the earth but sacrificing the shape or angle of the region. An example is the Hammer projection
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Re: GeoLogic Mapping C

Post by UTF-8 U+6211 U+662F » October 27th, 2020, 12:20 pm

freed2003 wrote:
October 27th, 2020, 12:20 am
An equal-area map projection is one that preserves the area of the region as it is on the earth but sacrificing the shape or angle of the region. An example is the Hammer projection
Yep!
Equal-area maps don't preserve the exact area of the region (because then the map would be huuuge). Areas are preserved divided by a scale factor specific to the map.
Your turn!

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Re: GeoLogic Mapping C

Post by freed2003 » October 28th, 2020, 1:28 am

nah that's not nitpicky i looked back and I worded it weird lol.

On a topographic map, what way do the contour lines point when crossing a stream?
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Re: GeoLogic Mapping C

Post by UTF-8 U+6211 U+662F » October 29th, 2020, 7:06 am

freed2003 wrote:
October 28th, 2020, 1:28 am
nah that's not nitpicky i looked back and I worded it weird lol.

On a topographic map, what way do the contour lines point when crossing a stream?
They are shaped like Vs pointing upstream?

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Re: GeoLogic Mapping C

Post by freed2003 » October 29th, 2020, 6:20 pm

UTF-8 U+6211 U+662F wrote:
October 29th, 2020, 7:06 am
freed2003 wrote:
October 28th, 2020, 1:28 am
nah that's not nitpicky i looked back and I worded it weird lol.

On a topographic map, what way do the contour lines point when crossing a stream?
They are shaped like Vs pointing upstream?
Yess
BEARSO/MIT/Regionals/State?
Cybersecurity 3/
Codebusters 6/
Geomapping 34/
Circuitlab 77/

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Re: GeoLogic Mapping C

Post by UTF-8 U+6211 U+662F » October 29th, 2020, 6:58 pm

How do you calculate the gradient on a topo map?

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Re: GeoLogic Mapping C

Post by HugoTroop » October 29th, 2020, 7:05 pm

UTF-8 U+6211 U+662F wrote:
October 29th, 2020, 6:58 pm
How do you calculate the gradient on a topo map?
 Measure the distance between two locations on the map where you wish to find the average gradient. Use the map scale to convert this to actual distance. Next, determine the elevation change based on the contour lines. You now have the rise and the run, and dividing them will give you gradient.

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Re: GeoLogic Mapping C

Post by UTF-8 U+6211 U+662F » October 31st, 2020, 2:06 pm

HugoTroop wrote:
October 29th, 2020, 7:05 pm
UTF-8 U+6211 U+662F wrote:
October 29th, 2020, 6:58 pm
How do you calculate the gradient on a topo map?
 Measure the distance between two locations on the map where you wish to find the average gradient. Use the map scale to convert this to actual distance. Next, determine the elevation change based on the contour lines. You now have the rise and the run, and dividing them will give you gradient.
Yep, your turn!

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