2006-12-20 11:32:13 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
How do you measure ... ? Use a protractor (the semicircular angle scale type) and hang a weighted thread from its center. Line up the straight edge of the protractor with the hill slope and the string will indicate the angle on the scale.
2006-12-20 12:16:50 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
A slope of a high is usually expressed as a percentage calculated by the rise (or fall) to the run. Thus, a 7% grade (sometimes seen on highway signs) means that the road will fall 7 feet for each hundred feet. Strictly speaking is this not exactly rise to run because the highway department is going to drive the road, see how far they went and see how much they dropped and do the math. But, it is close enough. Incidentally, a 30 degree slope is steep and a 45 degree slope in very steep.
2006-12-20 19:43:47 · answer #2 · answered by Flyboy 6 · 0⤊ 0⤋
On a topographic map, steeper hills have close lines, and gradual hills have wide spaced lines.
2006-12-24 02:03:37 · answer #3 · answered by five_instruments_so_far 2 · 0⤊ 0⤋