Coasts - LSQ Flashcards
What type of system is the coastal system?
Open
Name the feedback: Where changes within the system slow down or stop further changes
Negative
Name the feedback: When a change in the system increases/ speeds up
Positive
What is the term used for in a system, when inputs and outputs are balanced
Dynamic Equilibrium
What scale is a beach
Small
What scale is a littoral cell
Large
What is the correct order for offshore, back shore, inshore and foreshore
Offshore, inshore, foreshore, back shore
What term is used for the most common wind direction?
Prevailing wind
What is the direction in the UK?
SW
Name the term: the distance over which the wind has blown and this will help determine the magnitude (size) of the waves
Fetch
What type of wave has a stronger swash and weaker backwash?
Constructive
Which has a more elliptical orbit
Constructive
What type of beach are produced when the waves break in parallel to the coasts
Swash Aligned
What type of beach are produced when the waves break at an angle to the coasts?
Drift Aligned
Name the current: strong current moving away from the shoreline. They develop when seawater is piled up along the coastline by incoming waves
Rip current
Name the process: the movement of cold water from deep in the ocean towards the surface. It replaces the warmer surface water and creates nutrient rich currents. These form part of the pattern of global ocean circulation currents
Upwelling
Which tide occurs after a new moon when the sun and the moon are aligned with the Earth?
Low spring tide
Which tide occurs after a full moon when the sun and the moon are aligned with the Earth?
High spring tide
Which tide occurs when the sun and moon are at right angles to the earth?
Neap
The sea level can rise by what value for every 1millibar drop in pressure?
1cm
Name the classification of a tidal range more than 4m
macrotidal
Name the classification of a tidal range 2-4m
mesotidal
Name the classification of a tidal range less than 2m
microtidal
Formula to predict wave energy
LH^2