What are the different states of water? What are they called?
liquid = water, solid = ice, gas = water vapor
200
Where are many volcanoes found?
The Ring of Fire, which surrounds the Pacific Ocean
200
What is the longest river in the world?
The Nile
200
Describe the middle course of a river.
The river is wider, but not at its widest, it slows down, but not to its slowest, it meanders, and travels through its floodplains.
200
What sources of water form rivers?
melting snow and ice, precipitation
200
How much of the earth’s surface is covered by water?
71%
300
What causes volcanoes?
tectonic plate movement
300
What is the beginning of a river called?
The source.
300
What is an ox-bow lake?
A lake that is formed when a lot of sediment is dropped on the inside bank of a meander.
300
What is the river with the largest flow in the world?
The Amazon
300
What is the difference between seawater and continental water? Where is each kind found?
Seawater is salty and is found in the oceans and seas. Continental water is fresh water and is found in lakes, rivers, glaciers, and underground (groundwater).
400
Name the different parts of a volcano.
conduit, crater, ash cloud, (side) vent, magma chamber, lava
400
What is a river basin?
The area where a river and its tributaries flow.
400
What is a river delta?
An area near the mouth of a river where sediment is deposited and forms islands.
400
What might happen to a river during a drought?
The flow could decrease or it could dry up.
400
Explain evaporation, condensation and precipitation.
When water evaporates it turns into water vapor. When the water vapor rises, it condenses into clouds. It then falls as precipitation back to earth.
500
Explain the difference between a composite volcano and a shield volcano.
A composite volcano is pointier and has more violent eruptions. A shield volcano has a shield shape (wide, less pointy) and the lava usually moves more slowly.
What is an estuary? In which course of a river is it found?
The place at the mouth of a river where fresh water and saltwater mix. It is found in the lower course of a river.
500
True or false: All rivers have the highest flow during spring.
False. Rivers fed by melting snow and ice do have the highest flow in spring, but rivers fed by high precipitation have the highest flow during the rainy season.
500
Why can’t all fresh water be used for drinking water?
A lot of fresh water is polluted. Also, we would have to empty the lakes and rivers, melt the glaciers, dig up all of the groundwater…It would be impossible!