what is the contour interval on the map?
20 feet
40 feet
60 feet
80 feet
100 feet

Question

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Contour Interval", "Topographic Maps" ], "current_concepts": [ "Contour Interval", "Topographic Maps" ] } ## Identify labeled index contours $$ \begin{aligned} &\text{Index Contour 1} = 3,000\text{ feet} \ &\text{Index Contour 2} = 3,100\text{ feet} \ &\text{Index Contour 3} = 3,200\text{ feet} \end{aligned} $$ ## Count contour intervals between index lines $$ \begin{aligned} &\text{Elevation Difference} = 3,100 - 3,000 = 100\text{ feet} \ &\text{Number of steps (intervals) between } 3,000 \text{ and } 3,100 = 5 \end{aligned} $$ ## Calculate the contour interval $$ \text{Contour Interval} = \frac{100\text{ feet}}{5} = 20\text{ feet} $$

20 feet

40 feet

60 feet

80 feet

100 feet

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Earth Science", "Topographic Maps" ] }

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Question

Explanation:

Identify labeled index contours

Count contour intervals between index lines

Calculate the contour interval

Answer: