Multiple choice Knot is a measure of The speed of ship The curvature of spherical objects Solar radiation Intensity of earthquake shock Reveal answer Fill a bubble to check yourself A Correct answer Explanation A knot is a unit of speed equal to one nautical mile per hour. It is primarily used in maritime and aviation contexts to measure the speed of ships and aircraft. 1 knot equals approximately 1.15 miles per hour or 1.85 kilometers per hour.