Intro To Contour Lines Part 2

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Question 1: Are contour lines used to find a specific address?

• No

• Yes

Answer explanation

No. They’re unrelated to an address, latitude or longitude.

For a steep slope, would we expect the contour lines to be close to each other?

• No

• Yes

Answer explanation

Yes. For a steep slope we would expect the contour lines to be spaced close to each other.

For a shallow slope, would we expect the contour lines to be close to each other?

• No

• Yes

Answer explanation

No. For a shallow slope, we would expect the contour lines to be spaced far apart from each other.

If a contour line has a value of "-5" does that mean the land is below sea level?

• No

• Yes

Answer explanation

Yes. For example, 5 feet below sea level.

Can contour lines be on objects made by people, like a levee?

• No

• Yes

Answer explanation

Yes. Contour lines include all land even if it has been landscaped by people.

If a contour line has no number, does that mean its value equals the line next to it?

• No

• Yes

Answer explanation

No. We’d have to calculate its value using the contour interval.

Is the elevation of all land inside the top contour line on a hill (convex shaped top) equal to the value of that line?

• No

• Yes

Answer explanation

No. It is greater than the value of that line.

Is the contour interval always the same across one screen for a digital (online) image that has contour lines?

• No

• Yes

Answer explanation

No. It will be the same for a set of contour lines, but there can be several sets in one screen and each set may have a different contour interval value.