What Do Closely Spaced Contour Lines On A Topographic Map Indicate?

what do closely spaced contour lines on a topographic map indicate? : TEXT_1 TEXT_2 TEXT_3 what do closely spaced contour lines on a topographic map indicate?

what do closely spaced contour lines on a topographic map indicate? : TEXT_4 TEXT_5 what do closely spaced contour lines on a topographic map indicate?

what do closely spaced contour lines on a topographic map indicate? : TEXT_7 TEXT_6 what do closely spaced contour lines on a topographic map indicate?

what do closely spaced contour lines on a topographic map indicate? : TEXT_8 TEXT_9 TEXT_10 what do closely spaced contour lines on a topographic map indicate?