Ocean Waves and Tides

For my post I'm going to tell you what causes ocean surface waves and ocean tides. I'll even going to explain many vocab words. Ocean tides is the rising and falling action of the ocean waters. Ocean tides occur when the moon and sun have a gravitational pull on the Earth. The moon's gravitational pull is stronger because it is closer to the Earth than the sun. The moon causes the Earth's ocean to bulge outward so the side facing the moon has a high tide and the side that does not face the moon has a low tide. The strongest tide is called the spring tide because the sun and moon are combined of the gravitational pull. The Neap tide is the lowest tide and it comes twice in a month, comes in the first and third quarters of the moon.      

Ocean surface waves occur by the wind so it turns into small ripples than into waves and the harder the wind the more powerful the wave is. A wavelength  is the distance between a the two points of the waves. The wave height is the height of the wave. Trough is the lowest part of the wave and the highest part of a wave is called the crest. Tsunami's are over sized waves caused by earthquakes, volcanic eruptions, and landslides beneath the ocean. The sea level is the horizontal plane of the sea or the level between high and low tide. Tidal range is the difference between the high tide and the low tide. 
  


CLICK HERE to learn about the Moon and ocean tides...
CLICK HERE to learn about ocean surface waves...








































    

OCEANS

For my blog im going to talk about oceans. Im going to tell you why oceans are so salty, the sources of Earth's oceans, and I will show you some features of the ocean floor.

 
First, I'm going to tell you why oceans are salty. Oceans are salty because when water flows through a river the water picks up tiny amounts of minerals then ends up in the oceans. Rain or water will pick up dissolved minerals, salts, and sediment that ends up in a river or somewhere then will eventually end up in the oceans too. 

Since the oceans cover about 3/4 of earths surface so with all the air above the water it has a lot of renewable energy like wind energy, oceans current energy, and much more energy.




Now I'm going to tell you about the oceans features. The ocean has many features like mountains, active volcanoes, trenches, and animal life.

 Most active volcanoes are in the mid-ocean ridge. The mid-ocean ridge is located at the Southern Pacific ocean, Atlantic Ocean, and Indian Ocean.
  (Map of Mid-Ocean Ridge)
A trench is a steep, long, part of the ocean and descends lower than other parts of the ocean. They are formed by the movement of the tectonic plates. The deepest trench we know of is the Mariana Trench in the Western Pacific and is 36,198 feet long.     

The marine animals are divided into 3 groups. The zooplankton group which float and stays at the top of the ocean. The nekton which rapidly swims around the ocean. The benthos which stay on the bottom of the ocean floor.


Links that I used:Click here to read about life in the oceans..

                           play games about oceans..