CMA1501
Major Test 1 2025
DUE 24 JUNE 2025
, QUESTION 1: ENGINEERING PROPERTIES [10 MARKS]
1.1 Complete the following table
Engineering
Description
Property
1.1.1. Strength The material is resistant to deformation under stress. (2)
1.1.2. Thermal The material expands or contracts in response to temperature
Expansion changes. (2)
1.1.3. Heat Cast iron pots are used to cook food in a household because they
Conductivity conduct heat efficiently and retain it for longer periods. (2)
The water is transported from the reservoir to the consumer
1.1.4. Corrosion
through PVC pipes because PVC is resistant to corrosion and
Resistance
chemical degradation. (2)
The ability of a material to be deformed or shaped under
1.1.5. Malleability compressive stress without breaking, such as forming thin sheets.
(2)
QUESTION 2: SOIL [20 MARKS]
2.1 Explain the formation of Soil. (4)
Soil is formed through the weathering of rocks over long periods. This process can be
physical, chemical, or biological:
Physical weathering includes temperature changes, freezing, thawing, and
abrasion, breaking rocks into smaller particles.
Chemical weathering involves reactions with water, oxygen, and acids, altering
the mineral composition of rocks.
Biological weathering is caused by organisms like plant roots and microbes
which further break down rock particles.
Major Test 1 2025
DUE 24 JUNE 2025
, QUESTION 1: ENGINEERING PROPERTIES [10 MARKS]
1.1 Complete the following table
Engineering
Description
Property
1.1.1. Strength The material is resistant to deformation under stress. (2)
1.1.2. Thermal The material expands or contracts in response to temperature
Expansion changes. (2)
1.1.3. Heat Cast iron pots are used to cook food in a household because they
Conductivity conduct heat efficiently and retain it for longer periods. (2)
The water is transported from the reservoir to the consumer
1.1.4. Corrosion
through PVC pipes because PVC is resistant to corrosion and
Resistance
chemical degradation. (2)
The ability of a material to be deformed or shaped under
1.1.5. Malleability compressive stress without breaking, such as forming thin sheets.
(2)
QUESTION 2: SOIL [20 MARKS]
2.1 Explain the formation of Soil. (4)
Soil is formed through the weathering of rocks over long periods. This process can be
physical, chemical, or biological:
Physical weathering includes temperature changes, freezing, thawing, and
abrasion, breaking rocks into smaller particles.
Chemical weathering involves reactions with water, oxygen, and acids, altering
the mineral composition of rocks.
Biological weathering is caused by organisms like plant roots and microbes
which further break down rock particles.
