Coastal Features
She sells sea shells by the land along the coast.
She sells sea shells by the ___________
Seashore
These come "in" and go "out" twice a day
The tides
Waves and wind wear away rock cliffs at the coast. This process is called ______.
Erosion
Where does beach sand come from?
The rocks of the cliffs worn down over time. Also form bricks, glass, concrete and sea shells.
Rivers also bring sand from inland.
In warm places, worn down coral becomes sand.
The area at the rivers mouth where it widens out to enter the sea.
Estuary
These are like giant rivers of water moving slowly through the ocean
Currents
As the land erodes, areas made from harder rocks stick out into the ocean. These are called _______.
Headlands.
At the beach, you find larger rocks at the _____ of the beach.
top
What happens at the coast when the cliffs are made of soft rock?
The waves and wind wear away the land, moving the coast inland
The tides are caused by the gravity pulling the water out on the side of the earth facing ______
the Moon.
The Earth spins, so this changes during the day.
Another bulge of water appears on the opposite side.
In some places where the rock is soft, the waves can erode a deep hollow called a ______
cave
Backwash
When a river reaches the ocean, it slows down and deposition leaves particles carried by river. Over many years, this can create areas called _______.
Mudflats
What causes waves in the sea?
Wind
When a cave cuts all the way through the headland to other side we get a/an ______
Arch
One square meter of a sandy beach, how many small shellfish and other tiny animals may be hiding inside?
A. 50 C. 1000
B. 500 D. 2000
D. 2000
Name three ways people can damage the coast?
* Littering
* walking or driving over the sand dunes
*pollution from factories, sewage and chemicals
* taking away the sand for buildings
What are the two causes of ocean currents?
!. the wind blowing in the same direction all of the time
or
Water cooling down near the poles and sinking to the bottom.
When the roof of the arch collapses, a pillar of rock is left called a ______
stack
FREE DAY AT THE BEACH!
500 FREE POINTS!
Hooray!