6.2.4(a). Igneous Rocks

Try these first

1. 1.

   What are igneous rocks formed from?

   Hint

   Think about where they emerge from.

2. 2.

   Name one example of an igneous rock.

   Hint

   Consider common materials used for roads.

3. 3.

   What type of rock is granite?

   • Sedimentary
   • Igneous
   • Metamorphic

   Hint

   Think about how it is formed.

4. 4.

   True or False: Basalt is lighter than granite.

   • True
   • False

   Hint

   Consider the physical characteristics of both.

5. 5.

   Evaluate the impact of using granites versus basalts on the overall longevity of a highway under high traffic conditions.

   Hint

   Consider trade-offs between performance and cost.

6. 6.

   Compare and contrast the long-term environmental impacts of using igneous rocks versus recycled aggregates in road construction.

   Hint

   Think about sustainability vs. performance.