Waves Flashcards
(17 cards)
What is the ‘fetch’? 🤔
The distance over which the wind has blown. 🌊
What is the ‘trough’? 🧐
The lowest point of the wave. ⬇️
True or False:
The stronger the wind is, the longer it has blown for and the longer the fetch; the larger the waves will be and the less energy they’ll have? 🏝️
False:
The MORE energy they’ll have. 🤓
What is ‘Attrition’? 🦞
The process in which rocks and sediment become smoother, smaller and rounder due to crashing into each other. 🐟
What causes Hydraulic Action? ❓
When air and water is forced into the cracks of a cliff which leads to increased pressure and causing rocks to fall off. 🏄🏼
What is the ‘Swash’? 🚢
The water that moves up the beach. ↗️
What is the ‘length’? 🗿
The distance between two waves. ⚓️
True or Flase:
Backwash is the water moving along the beach? 🐚
False: Backwash is the water being pulled back into the sea. 🦐
What is ‘Abrasion’? 🧜🏻♂️
When waves throw sediment against the cliff face, breaking it down. 🩳
How many types of erosion are there? 🤨
4 🪸
Why is the ocean salty? 🧂
Years of breaking down sediment have effected the ocean leading to the salt rocks “flavouring” the sea. 🪨
Why do tsumanis happen? 🐡
Extremely strong winds lead to extremely large fetches leading to extremely large waves leading to tsunamis. 🐬
What is the highest point of the waves called? 🎣
The Crest. 🔱
Who lives in a pineapple under the sea? 🍍
SpongeBob SquarePants 🧽
True or False:
Abrasion is when sediment is thrown against a cliff? 🏴☠️
True. 🦑
What is the ‘wave height’? ⬆️
The distance between the trough and the crest. 🌴
What happens during Hydraulic Action? 🛟
Cliff cracks expand and pressure increases. 🍹
