Limestone Flashcards
1
Q
How is cement made?
A
Heating powered limestone with clay
2
Q
How is mortar made?
A
Mixing sand, water and cement
3
Q
How is concrete made?
A
Mixing cement with sand, water and crushed rock.
4
Q
Advantages and disadvantages of building with limestone material?
A
POSITIVE
-Limestone, cement and mortar slowly react with carbon to dissolve into rainwater and wear away.
NEGATIVE
-Concrete seen as ugly
-Concrete is strong and easily shaped
5
Q
Advantages of quarrying?
A
- Limestone is a valuable natural resource
- Limestone can be used for many uses
- Limestone quarrying provides employment and supports the local economy
6
Q
Negative of quarrying?
A
- Limestone quarries permanently damage the local environmental
- Quarrying creates noise and a lot of traffic
7
Q
Describe the limestone cycle?
A
CaCO3 + heat = Calcium oxide + water = Calcium hydroxide + CO2 = CaCO3
