A river
is therefore a very important part of the water cycle, carrying rain water back to the sea. It can be a long journey for a raindrop. Rivers can run for many hundreds of miles.
How does rainwater reaches the sea?
The continuous evaporation of water from the lakes, ponds, rivers, and seas make clouds. When the atmosphere gets cool it becomes heavy; precipitation occurs as water drops and rain. The rainwater reaches the land surface like rivers, lakes, and ponds. Finally,
they drain into the seas
and oceans.
Which type of water to the ocean bodies and the seas contain?
The water in the oceans is
saline (saltwater)
, but, what do we mean by “saline water?” Saline water contains significant amounts (referred to as “concentrations”) of dissolved salts. In this case, the concentration is the amount (by weight) of salt in water, as expressed in “parts per million” (ppm).
Do All rivers Flow to the sea?
Find out more about the different sources of rivers. … The
great majority of rivers eventually flow into a larger body of water
, like an ocean, sea, or large lake. The end of the river is called the mouth.
Does all water lead to the ocean?
Most water is carried into the
oceans by rivers
. … These are special environments where the freshwater from rivers mixes with the salty ocean water. Some other water gets into the oceans when groundwater seeps out of the ground or when rain falls over the ocean.
Which is the world's saltiest water body?
Antarctica's Don Juan Pond
is the saltiest body of water on the planet.
What are the 7 major bodies of water?
The Seven Seas include
the Arctic, North Atlantic, South Atlantic, North Pacific, South Pacific, Indian, and Southern Oceans
. The exact origin of the phrase ‘Seven Seas' is uncertain, although there are references in ancient literature that date back thousands of years.
Does it need to rain for rivers to get water?
In the absence
of rain
, most of the flow in a river is water that drains slowly from the ground. … The rate of recession is determined primarily by the underlying geology of the river basin. Some rivers, for example in the eastern Wairarapa where there is a tertiary mudstone geology, recede quickly and dry up in summer.
Does rain come from lakes?
Around the world, each year, about 505,000 km
3
(121,000 mi
3
) of water falls as rain, snow, and other types of precipitation. … Less water evaporates over the land than falls onto land as precipitation. Evaporation of water from
the land happens directly from lakes
, puddles, and other surface water.
Where does the water go when it evaporates?
Most of the water that evaporates from the
oceans falls back into the oceans as precipitation
. Only about 10 percent of the water evaporated from the oceans is transported over land and falls as precipitation. Once evaporated, a water molecule spends about 10 days in the air.
Which ocean is not salt water?
The
ice in the Arctic and Antarctica
is salt free. You may want to point out the 4 major oceans including the Atlantic, Pacific, Indian, and Arctic. Remember that the limits of the oceans are arbitrary, as there is only one global ocean. Students may ask what are the smaller salty water areas called.
What are the only two rivers in the world that flow north?
Johns River and the Nile River
are the only two rivers in the world that flow north.” In this editorial he explains that there are hundreds of rivers that flow north and; in fact, the St. Johns River flows south as well.
Why are oceans salty but not lakes?
Rain replenishes freshwater in rivers and streams
, so they don't taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it. … In other words, the ocean today probably has a balanced salt input and output (and so the ocean is no longer getting saltier).
Does rain fill the ocean?
Of the global rainfall amount,
77 percent of precipitation falls over oceans
and 23 percent over continents. Because some continental precipitation runs off to the seas, 83 percent of global evaporation comes from the oceans and only 17 percent from continents.
Which is the purest source of water?
Rain water
is the purest source of natural water. In the case of the sun, the rain water comes straight from the condensation of vapor. The water evaporates from ponds, lakes, and rivers. During the vaporization cycle all the impurities are eliminated, and then water in the form of rain falls straight into the soil.
Can you drink ocean water?
Although people can't drink seawater, some marine mammals
(like whales and seals) and seabirds (like gulls and albatrosses) can drink seawater
. Marine mammals have super efficient kidneys, and seabirds have a special gland in their nose that removes salt from the blood.
