ATSC 113 Sailing Weather Quiz - Questions with correct Answers The factors that affect wave formation include: Fetch, duration, distance Fetch & wind
... [Show More] velocity Fetch, wind velocity, distance Fetch, wind velocity, duration Duration & wind velocity Drag is: (a) & (b) (b) & (c) (b) Friction when wind moves across the surface of water (a) Friction when wind moves across the surface of air (c) Force that acts against the relative motion of one fluid with respect to another fluid Fetch can be defined as: None of the above The energy transported by each wave The time during which the wind blows The distance over water that the wind can blow A force that acts against the motion of a fluid relative to another Large waves can form even if wind speeds are small. False true If wind velocity is constant, larger waves will form when: Fetch is constant and duration is constant Fetch decreases and duration increases Fetch decreases and duration decreases Fetch increases and duration increases Fetch increases and duration decreases Small waves that quickly dissipate due to the water's surface tension are known as: Rogue waves Gravity waves Steep waves Swell Capillary waves Large waves that form due to constructive interference are tsunamis. False true The distance between one wave crest and the next wave crest is known as the: Crest to crest ratio Amplitude Wave height Wavelength Wave period A wave train is: The wave's individual speed in relation to other waves The distance between the front wave and end wave in a group of waves None of the above A group of waves travelling in the same direction The waves left behind a strong blast of wind What is swell? A type of breaking wave popular with surfers A series of gravity waves formed by earthquakes that travel long distances across the ocean A series of gravity waves formed by heavy winds that can travel long distances across the ocean A series of small capillary waves seen on the water surface during light winds A type of capillary wave that travels long distances across the ocean This type of breaking wave forms over gentle slopes, with long slow breaks and white water spilling over the crest. Leaking breaker Surging breaker Plunging breaker Diving breaker Spilling breaker As a wave approaches a shoreline, the drag between the bottom of the wave and the sea bottom causes: Wavelength and wave height to decreases Wavelength to decrease and wave height stays the same Wavelength and wave height to increase Wavelength to decrease and wave height to increase Wavelength to increase and wave height to decrease Plunging breakers are characterized by: A crest with a poorly defined curl, falling forward with considerable energy A crest with a well-defined curl, falling forward with considerable energy Their amplitude and wave period A crest with a well-defined curl, falling forward with minimal energy Their wave height and steepness
Waves tend to become unstable once their wave steepness exceeds: 1:7 1:2 1:5 2:1 7:1 Which factor is NOT important to consider when looking at how swell will break on a beach? Local conditions Great circle routes Swell period [Show Less]