Tides Flashcards
1
Q
Spring tide definition
A
Sun and moon line up with each other with a combined gravitational pull
Greatest tidal range
2
Q
How often do spring tides occur?
A
Twice every lunar month
3
Q
Neap tide definition
A
Smallest tidal range
Sun and moon at right angles to each other
4
Q
What are the 3 types of tidal range?
A
Macrotidal
Mesotidal
Microtidal
5
Q
Tidal range of macrotidal
A
> 4m
6
Q
Tidal range of mesotidal
A
2-4m
7
Q
Tidal range of microcycle
A
< 2m
8
Q
Rip current definition
A
Waves that return to the sea from the shore
They cut through the lines of the breaking waves
9
Q
Wave refraction
A
The headland absorbs most of the wave energy and is not eroded
10
Q
What does wave refraction mean for beach erosion?
A
Beach erosion reduced as less energy from waves
