CMA1501
MAJOR TEST 1 2025
UNIQUE NO.
DUE DATE: 24 JUNE 2025
, Construction Materials
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.
1.1.2. The ability of a material to expand when heated and
Thermal Expansion
contract when cooled.
1.1.3. Thermal Cast iron pots are used to cook food in a household because
Conductivity they conduct heat effectively.
1.1.4. Corrosion The water is transported from the reservoir to the consumer
Resistance through PVC pipes due to their resistance to corrosion.
1.1.5. The ability of a material to be hammered or rolled into thin
Malleability
sheets without breaking.
QUESTION 2: SOIL [20 MARKS]
2.1 Explain the formation of soil. (4 marks)
Soil is formed through the weathering of rocks and minerals over time. Weathering
occurs physically (mechanical breakdown), chemically (alteration of minerals), and
biologically (decomposition by organisms). These processes break down rocks into
smaller particles, which mix with organic matter to form soil.
MAJOR TEST 1 2025
UNIQUE NO.
DUE DATE: 24 JUNE 2025
, Construction Materials
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.
1.1.2. The ability of a material to expand when heated and
Thermal Expansion
contract when cooled.
1.1.3. Thermal Cast iron pots are used to cook food in a household because
Conductivity they conduct heat effectively.
1.1.4. Corrosion The water is transported from the reservoir to the consumer
Resistance through PVC pipes due to their resistance to corrosion.
1.1.5. The ability of a material to be hammered or rolled into thin
Malleability
sheets without breaking.
QUESTION 2: SOIL [20 MARKS]
2.1 Explain the formation of soil. (4 marks)
Soil is formed through the weathering of rocks and minerals over time. Weathering
occurs physically (mechanical breakdown), chemically (alteration of minerals), and
biologically (decomposition by organisms). These processes break down rocks into
smaller particles, which mix with organic matter to form soil.
