Isolines and gradient help because earth science is yucky?

Question

Okay, I understand most of it but I have a few questions.

1)Let's say there's only one point with a value of 22.5 degrees on a field map. How would you connect it? Or would you leave it alone since it's the only one of the value of 22.5 degrees on a map.
2)Just wondering...if you only had two lines of equal value and they're straight across. How would you connect them and show that they are continuous?
3)Gradient junk now, lol. Okay, pretend a question asks is the gradient larger from point D to A or point X to E. If you figure out the gradient and the gradient from D-A was 1.5/m and from X-E was 2.0/m which gradient is larger? I'm confused because I really don't understand the true meaning of gradient. If the questions aren't clear and pictures might help, just request and I'll get working on my /\/\@|) $K1LL$ 11G|-|T? XDXDXDXD

TYPO-Is the gradient from D-A or X-E larger?

Answer 1

Question 1- Let's say you have an interval of 50 feet on a field map,you would connect the points which have more than one length and when you reach a point where theres only one, you just draw a line where it WOULD BE as we do not measure every single millimeter at everyspot. For instance say you have 100 as a distance. You would draw a line nearest to 100. Example numbers 120 and 89 are both below 100 you would draw a line about 3/4 of the way to 89 and you keep going on until you reach the end of the field map. Hope this helps.

Answer 2

Gradient is the change in relief divided by the change in distance.

Relief is the change in elevation from one point to another (use the contour intervals to determine this). Distance is how far the points are apart (use the map scale on a map to determine this). Gradients are expressed in either feet per mile or metres per kilometre.

Questions 1 and 2 aren't that clear to me. Are you working on topo maps?

Answer 3

earth science gradient