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chapter 8.2
vocabulary-ocean waves and tides
| Question | Answer |
|---|---|
| what is the periodic rise and fall of the eaarths oceans surface caused by the gravitational force between earth and the moon and between earth and the sun | tides |
| occurs when earth, the moon and the sun form a right angle and has the lowest tidal range | neap tide |
| surface wave currents are formed by what | wind |
| the average level of the ocean's surface at any given time | sealevel |
| a spring tide is a tide that has the largest what | tidal range |
| a neap tide is a tide that has the lowest what | tidal range |
| the bottom of the wave | trough |
| the highest part of the wave | crest |
| from crest to crest or from trough to trough | wavelength |
| to trough to crest | wave height |
| how shallow does water need to be for a breaker to form | the water has to be more shallow than the base is |
| what is a tsunami | a huge wave caused by a disturbance in the ocean |
| which disturbance can cause a tsunami | earthquakes |
| what causes tides | gravitational pull on the earth, moon, and sun |
| why does the largest tidal range occur during a spring tide | more gravity pull |
| why does a neap tide have the lowest tidal range | low gravity pull |
| what is the position of the earth, sun, and moon at a spring tide | strait line |
| what is the position of the earth, sun, and moon at a neap tide | right angle |
| the what distance between the crest and the trough of a wave is the wave height | vertical |
| the what distane between the crest to crest is the wavelength | horizontal |
| when a wave reaches a certain height and cant support the crest it collapses, what is this called | breaker |
| besides an earthquake what else is a disturbance that can cause a tsunami | landslides, volcanic eruptions, and glaciers |
| can a breaker form at any size | no |
| how many neap tides are there in a single day | 2 |
| how many spring tides are there in a single day | 1 |
| when do the neap tides occur | morning, and late afternoon |
| when do the spring tides occur | all afternoon |
Created by:
JacktheBreit
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