Where are some raw materials that are used to make construction materials found?

How can than the hardness of two materials be compared?

Fill the gaps:
....... is harder than ......, and marble is ...... than ..........

Many buildings look like they are made from one material, but what are they often made of?

What is limestone?

What is limestone made of?

What is marble?

When is marble formed?

Why is marble harder than limestone?

When is granite formed?

What is granite?

Is granite very hard or soft?

What is thermal decomposition?

Calcium carbonate (limestone) thermally decomposes when heated. Give the word and symbol equation for the thermal decomposition of calcium carbonate.

When is cement made?

When is concrete made?

What is reinforced concrete?

What do composites contain?

Fill the gaps:
Concrete is strong under ........... (squashing force) but weak under ....... (pulling force).

If heavy loads are applied to a beam what happens?

What does this create?

What does the tension do to the concrete?

Why is reinforced concrete a better construction material?

What do the steel rods in reinforced concrete do when the concrete is carrying a heavy load?