Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
What is a natural resource
|
Any physical material that makes up part of the Earth and is valued and needed by people
|
|
|
What is a renewable resource and what are some examples of them
|
A resource that natural processes continuously replace
-Air -Water -Soil |
|
|
What are nonrenewable resources and what are some examples of them
|
resources that can't be replaced naturally after they have been used.
-Minerals -Fossil Fuels |
|
|
How much of water is in the ocean that is too salty to drink
How much water is fresh water How much do we use |
97% is in the ocean
3% of water is fresh 1% is water that we can drink |
|
|
Why is soil needed
|
Soil is essential for providing food for the world's people
|
|
|
Soil develops _____ taking a ___ or even ___ of years
|
slowly, few, hundreds
|
|
|
What is leaching
|
The downward movement of the minerals and humus in the soils.
|
|
|
What effect does leaching have on soil
|
Less minerals to aid plants, less fertile
|
|
|
What are some problems with soil and how can they be solved
|
Problems
-Erosion -Soil Exhaustion -Arid Conditions Solutions -Contour Plowing -Crop Rotation -Irrigation |
|
|
What problems can come from irrigation
|
Soil Salinization- over watering an area, salt build up in the soil
|
|
|
What are some benefits of having forests
|
Provide habitats against for different species, Protects against erosion, Has products that we need
|
|
|
What are some problems we have with forest
|
Deforestation
-Caused by clearing land for farming and fuel -It is destroying the forests in many of the countries Reforestation- Replanting of trees |
|
|
What is air being threatened by and what is that causing
|
Pollution from factories and cars are threatening the air.
Pollution causes chemicals to go into air that causes acid rain. Health damage Ozone layer disappearing |
|
|
Maintaining a clean supply of water is ____ to do
|
Hard
|
|
|
What are aqueducts
|
Aqueducts are man made water ways that transfer water
|
|
|
What are minerals
|
Solid substances that come out of the ground. Water is a mineral
|
|
|
where do fossil fuels come from
|
Remains of dead plants and animals, Coal, Petrolium, and Natural gas
|
|
|
Where do the three types of fossil fuels come from
|
Coal-From swamps and bogs
Natural Gas and Petrolium- Formed from tiny animals that living in lakes or seas |
|
|
What is uranium
|
Metallic element that is radio active and provides energy for nuclear power plants and create waste that is radio active for thousands of years
|
|
|
Which fossil fuel burns the cleanest. Second. Third
|
Petrolium, natural gas, coal
|
|
|
What fossil fuel is the most abundant
|
coal, petrolium, natural gas
|
|
|
What are petrochemicals
|
Raw material made from oil that are used in explosives and other things.
|
|
|
What are aquifers
|
Rock layers in the earth where ground water is abundant
|
|
|
What is fossil water
|
Ground water that is not replenished by rain
|
|
|
What is ore/
|
Mineral bearing rock
|
|
|
The Colorado was the first to be ____
|
Completely controlled by man
|
|
|
How many people does it serve
|
over 30 million
|
|
|
The Colorado was America's ___ and ___ river
|
siltiest, warmest
|
|
|
Why did some people want to control the Colorado
|
It was so unpredictable and wild, they wanted to stop the floods, and they also wanted to use the water to settle the west
|
|
|
The diversion tunnels could reach up to ____ degrees and on average one people died every ____ days
|
140º, 2
|
|
|
Hover Dam had enough concrete in it that if it were a highway, it could stretch from __ to ___
|
New York City, San Francisco
|
|
|
What were some positives about creating dams on the Colorado
|
It provided a way to control the river, provided electricity and water to the west so it could be settled, produced many jobs, and it was the only pollution free renewable resource
|
|
|
What were some negatives about creating the dams on the Colorado
|
It scared the environment, cost lots of money, and the animals were dying because of it
|
