Topography and Terrain Features Flashcards
6 cards from real FAA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Topography and Terrain Features flashcards as text
On a sectional chart, what symbol is used for a man-made obstruction with a height greater than 1,000 feet AGL that is lighted?
Answer: Open triangle with lightning bolt
A high obstruction above 1,000 feet AGL with lighting is shown on sectional charts as an open triangle with a lightning bolt symbol indicating the presence of hazard lights.
On a sectional chart, the two numbers shown next to an obstruction symbol (e.g., 1549/249) represent what?
Answer: Elevation MSL / height AGL in feet
The two numbers beside an obstruction on a sectional chart show the elevation of the top of the structure in feet MSL (upper number) and the height above ground level in feet (lower number in parentheses or below).
What does a group obstruction symbol (multiple obstruction symbols clustered together) on a sectional chart represent?
Answer: A wind farm or multiple towers in close proximity
Grouped obstruction symbols on a sectional chart typically represent wind farms, antenna farms, or clusters of towers in close proximity that pose hazards to low-flying aircraft.
On a sectional chart, power transmission lines are depicted by what symbol?
Answer: A line with perpendicular tick marks or T symbols
Power transmission lines on sectional charts are shown as a line with small perpendicular tick marks or T-shapes along it, warning pilots of overhead wire hazards.
On a sectional chart, a dashed contour line indicates what about the enclosed terrain?
Answer: Terrain below sea level (depression)
Dashed contour lines on a sectional chart indicate depressions or basins where terrain elevation is below the surrounding land, such as dry lake beds or sinkholes.
On a sectional chart, what does a blue tint or shading over a land area indicate?
Answer: Flooded or marshy terrain
Blue shading over land areas on a sectional chart indicates marshes, swamps, or permanently flooded wetlands — terrain types significant for emergency landing planning.