Human activities examples 3.4

Question 1

Building a dam

Answer 1

Slope stability↓
Slope shape
Can destabilise as the slopes are cut to create the reservoir, also water in reservoir can also affect the slope

Question 2

Road cutting

Answer 2

Slope stability↓
Slope shape
Creates artificial valley with steeper slopes on either side.

Question 3

Building foundations for buildings

Answer 3

Slope shape
Material is often removed and a concrete foundation is placed changing slope shape.

Question 4

Mining

Answer 4

Slope stability↓
Slope shape
Surface mining removes the top layer changing slopes shape
Underground mining removes minerals minerals from inside, this can change stability and shape of the slope.

Question 5

Building of urban areas leading to urban heat island

Answer 5

Increased temperatures in urban areas lead to increased chemical weathering rate

Question 6

Increased CO2-global warming

Answer 6

Additions of CO2 to the atmosphere increase temperature leading to increased rate of chemical weathering

Question 7

Release of Sulphur dioxide and Nitrogen

Answer 7

Higher concentration of these compounds sometimes result in acid rains which contribute to rate of chemical weathering