Shoreline, Glaciers, Sea-Level Flashcards
What is beach nourishment?
pumping of sand from off shore to on shore
What is a shoreline?
a boundary where land meets the water
How do shorelines move?
It moves because water and and storms
What is relative sea level?
the average sea level in one specific area
What is absolute sea level?
the average sea level all across the earth
What causes changes in absolute sea level?
ice melts = water rises
ice forms = water lowers
What are waves?
caused by wind except for tsunamis
What are tides?
the gravitational pull from the moon
How does a wave travel and break?
the longer the wavelength the higher it is when it hits the shore
Explain refactin and longshore drift.
waves come in at an angle and this moves sand
Who is Oetzi? What did we learn from him?
an Ice man that was preserved in a glacier for over 5000 years
What are the 2 main types of glaciers?
alpine glaciers
Polar ice caps
How has global climate changed throughout geologic history?
the climate has gotten warmer over the years and slowly over time it will cool off
What causes ice ages? What are the effects?
Plate tectonics
Atmospheric changes
Milankovitch cycle
effects - civilization had had to learn how to live together
How do glaciers move?
they carve their way through he mountians and the earth
