Earthquakes occur when there is a sudden release of stored up energy in the Earth's

Tremors that have occurred in Earth's crust are known as

Another name for Earthquakes is

Furniture may move and people may run outside the houses at the scale of

Many buildings and bridges collapse at a scale of

Earthquakes usually occur at the boundary of

At intensity level of '6'

Windows may rattle and people may feel the tremor at the scale of

The vibrations radiate from the focus in all direction as

The approximate range of earthquakes that occur each year is

Richter scale is a

Poorly built buildings may collapse at a scale of

The magnitude of the earthquake indicates the amount of

The place directly above the focus on the Earth's surface is known as

Structure of wood can be divided into the following layers. You may choose more than one option.

Timber is a traditional material used on Malaysia and can be divided into two (categories which are:

Choose the common types of steel used in construction

Select some of the advantages of steel as construction material

Select some of the advantages of using concrete as construction materials

Concrete can handle the higher compression stresses as compared to tension