Where does the energy to drive the water cycle come from?
The Sun
1 of 14
How common is carbon as an element in the Earth?
The twelfth most common element in the Earth
2 of 14
How does carbon dioxide leave the atmosphere?
Through photosynthesis, and by dissolving in seawater
3 of 14
What do sea plants and sea animals use the carbon dioxide for once it has dissolved in seawater?
Sea plants use it in photosynthesis; sea animals use it to make their shells
4 of 14
What is limestone made of?
The bodies of tiny sea creatures that fell to the bottom of the sea million of years ago
5 of 14
What are the reactants and products for the complete combustion of wood?
Reactants are carbon and oxygen; the product is carbon dioxide
6 of 14
When does limestone produce carbon dioxide?
When heated in industry or when it moves below the Earth's crist
7 of 14
What are petroleum and natural gas formed from?
Formed underground over geological periods of time from the remains of dead sea creatures
8 of 14
What is coal formed from?
Formed underground from decayed land vegetation over geological periods of time
9 of 14
What percentage of natural gas is methane
More than 90% of natural gas is methane
10 of 14
In human terms, what are resources?
Materials we get from the environment to meet our needs
11 of 14
Renewable resources are ...
resources that are inexhaustible (will never run out) - wind, tides and solar power are examples
12 of 14
Non-renewable resources are ...
resources that exist in a fixed quantity in the Earth's crust (e.g. metallic and non-metallic minerals and fossil fuels). They will run out because they were formed over millions of years and we are using them up much faster
13 of 14
Potentially renewable resources are ...
resources that can be renewed but will run out if we use them too quickly (e.g. fresh water and air (air can become polluted so it is potentially renewable), fertile soil, and plant and animal biomass
14 of 14
Other cards in this set
Card 2
Front
How common is carbon as an element in the Earth?
Back
The twelfth most common element in the Earth
Card 3
Front
How does carbon dioxide leave the atmosphere?
Back
Card 4
Front
What do sea plants and sea animals use the carbon dioxide for once it has dissolved in seawater?
Comments
No comments have yet been made