Vocabulary
the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land,
What is the water cycle?
Mountain bogs collect rainwater and create the start of a river.
What is the source of a river
The water on Earth today is the same water that was here millions of years ago.
What is true
The liquid and solid water particles that fall from clouds and reach the ground are known as __________. These particles include drizzle, rain, snow, snow pellets, ice crystals, and hail.
What is precipitation?
a winding curve or bend of a river or road.
What is a meander?
This Mountain range can be found in Nepal and contains the tallest mountain in the world.
What is the Himalayas?
Where the river meets with the ocean or sea.
What is the mouth/estuary?
Floods are not a constant threat and can be prevented.
What is false?
_________ is the process by which water changes from a liquid to a gas or vapor. Also, the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.
What is evaporation
the gradual destruction or wearing away of rock.
What is erosion
Water that runs off the land to lower places from the source (top of mountain).
What is runoff
Where two rivers meet.
What is a tributary?
A liquid will change to a solid when heat is added.
What is false
__________is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor.
What is condensation.
The _________of a river has more energy and volume then in the upper course. The erosion has widened the channel and meanders are typical landforms found in this stage of the river.
What is the middle course
_________ is the processes where material being transported by a river is deposited.
What is deposition?
This river is a main water source in the continent of Africa. 95% of the population in Egypt live by the this river. Ancient Egyptians developed ways to bring the water from this river onto the land to use for their crops.
What is the Nile River?
Water is constantly moving and changing from one form (liquid, gas, solid) to another.
What is true
the draining away of water (or substances carried in it) from the surface of an area or land.
What is runoff?
The volume of water in a river is at its greatest in the _________. This is due to the contribution of water from tributaries. Energy in the river is at its lowest and deposition occurs and it is quite flat nearing the mouth of the river.
What is the lower course
__________ is the process by which water on the ground surface enters the soil.
What is infiltration?
When erosion causes banks to form in the river and they create a bend along the river.
What is a meander?
Water that comes from a cloud and falls as rain, snow, sleet or hail is called run-off.
What is false. These are forms of precipitation.
They are saturated with water for most of the year, and many have thick layers of moss and mud
What is a mountain bog?
As the river moves through the __________it cuts downwards. The gradient here is steep and the river channel is narrow. Vertical erosion in this highland part of the river helps to create steep-sided V-shaped valleys, rapids, waterfalls and gorges.
What is the Upper Course