A beach is a landform that forms along the coastline of a body of water such as an ocean, lake, or river. It is usually made of sand, gravel, or shingle.
There are many different kinds of beaches, but they all have the same basic function: to provide access to a stretch of water. When the tide rises, sand will cover the beach and when it falls, it will cover it again.
The beach is also home to many animals. These include sea turtles and seals. They use the beach to lay their eggs and to have babies.
They also use it to swim and to look for food and other things. The beach is also home to many marine plants and algae. These plants are called seaweed and can be either brown, green, or red.
These plants help to clean the water and make it safer for animals to swim in. They are also important for protecting the shoreline from erosion.
Beaches change over time as a result of natural processes like swash and backwash, as well as natural disasters such as storms and floods. These changes can also be caused by humans.
A beach can change from day to day because of how the sun and the moon are affecting the weather. This causes the waves to move a certain way at the high and low tides.
During a high tide, the ocean will completely cover the beach. This is because the waves will come and push the sand away from the beach. On the other hand, during a low tide, the ocean will retreat exposing more of the beach.
Sometimes, the sand will be mixed with rocks that are found on the beach. This can be helpful for the people who are looking for rocks.
Another thing that happens to the sand is that when the waves get closer to the beach, the sand is moving faster. This is called the longshore current and it moves the sand in a direction parallel to the beach.
Some sand grains, or particles, are very small and cannot be seen by the human eye. These are the smallest particles that can be found on the beach. The sand will then be moved inland and it will pile up on the land side of the beach.
The sand will then have to come up higher in the future so that it can be able to reach the water again. This is a process called accretion and it can be very exciting when you are walking on the beach.
When the sand gets very big it can be called a sand dune or sand hill. This is where the sand is very tall and it will be hard to go down because of all the sand that is on the ground.
It is a lot more dangerous to walk on the sand when it is very tall because you could get hurt or even die. It can also be a lot harder to walk on the sand when it has been mixed with rocks.