Rocks
What type of rock is most likely to be found on a river bed?
One that is worn and smooth and does not have sharp edges
What area is immediately below the water table?
The zone of saturation
In Virginia most of our drinking water comes from where
rivers and wells
What do you call a land area that drains a particular set of streams and rivers is
watershed
What is number ten on the Mohs scale
diamond
What is the development of soil?
What is the top of the zone of saturation?
The water table
what percentage of earths water is salt water
97%
Why would the Coastal Plain have the mildest climate of all five regions in Virginia?
Because it is next to the ocean. Water holds its temperature longer than land and has a moderating effect on the areas near it
What are the lines on a topographic map called
contour lines
What are four agents of erosion
wind, water, gravity and ice
What is the area above the water table called
the zone of aeration
What percentage of earth's water is freshwater
3%
How does radiation affect the convection driven weather systems?
radiation from the heats the landforms and that heats the air above them
What type of map is raised with 3D representations of landforms such as mountains
relief map
Since caves are supported by the water table, what will form if the water table decreases below the level of the cave?
a sinkhole
What would cause a water table to lower?
extended drought over the recharge zone
Where is most of earth's freshwater found?
Glaciers and Ice caps
What do we call the circulation of warm air rising and cool air falling in our atmosphere?
Convection
What is the most accurate type of map
a globe
What do you get when you have limestone combined with slightly acidic groundwater?
Karst topography
rainwater harvesting
Earth's atmosphere is divided into layers based on what?
Temperature
What are the three groups of minerals?
Silicates, oxides, and carbonates
What is number five on the Moh's scale
apatite