Sustainable use of Earth's waters
The earth is called the _______ planet due to having 3/4 of it's surface covered in water?
There are two types of natural water - one is sea water (aka salt water), the other is _____________?
Continental water
This type of movement of sea water occurs on the surface of the water and is produced by wind.
Waves
In the _______ (upper/middle/lower) course of the river, you will notice water erosion of land because the water flow is fast and the channel is narrow.
upper
These are permanent bodies of water that form in the interior of continents, located in sunken land.
Lakes
Access to drinking water by region. Who has the lowest percentage (worst access)? Latin American Countries, Sub-Saharan Africa OR South East Asia
Sub-Saharan Africa (at 57%)
Which makes up the largest percentage of fresh water (not salt water)?
1. Glaciers & polar ice caps
2. Groundwater
3. Rivers, streams, lakes
Glaciers and polar ice caps
________ are the daily rise and fall in sea levels. Controlled by the forces of the moon.
A __________ is what forms in the upper course of a river when there are great differences in height.
Waterfalls
This is what forms when a lake almost completely dries up
Swamps
This type of access to water supply is defined by the fact that it is 30 minutes or LONGER away to get to. (2 word answer)
Limited supply
Name 2 of the 4 stages in the water cycle
2. Condensation
3. Precipitation
4. Collection
______ describes the level or percentage of salt in the sea water and depends on the temperature of the water.
Salinity
There are (2) types of rivers, what are their names.
Main, Tributaries
This type of water rises to the surface in the form of cold springs and hot springs
Groundwater
1 out of ________ in the world do NOT have access to drinking water.
3
Say True or False for each of these statements:
1. Water is evenly distributed in nature
2. Water is continuously overexploited by humans
3. Pollution improves water quality
1. False
2. True
3. False
Name the 5 oceans
Atlantic, Pacific, Indian, Arctic, Antarctic
Estuaries form where?
at the mouth of the river where river water mixes with sea water
Polar ice caps; Alpine/mountain summit
Only _______% of the Earth's water is fresh water.
2.5%
What is the term for something that needs the correct balance between living things and the elements it is composed of.
Ecosystem
The Arabian is what?
a sea
Name 1 of 3 examples of a river channel that only has water flowing as a result of rain.
wadis (in deserts), ephemeral streams and gullies (in spain)
When water filters through the permeable ground and reaches a layer of impermeable rock, it collects and forms what ?
Aquifer