S3 Ch4&5 Living with Natural Hazard

An (a)   is a serious shaking of the land surface or under the sea floor.

Earthquake is a result of the movement of the Earth's ________________________.

• mantle plates

• crustal plates

• core plates

The structure of the Earth is consisted of three layers. They are... (Select all correct answers)

• crust

• floors

• mantle

• magma

• core

The crust is made up of different plates. Below these plates is hot molten rock called (a)   (岩漿).

The ______________ of magma leads to plate movement.

• rising

• sinking

• convection

When magma sinks, the plates move ____________ each other.

• towards

• apart from

(a)   builds up deep within the curst when two plates move. It is then released suddenly when it becomes too great. The crust moves violently and earthquakes are resulted,.

The effects of earthquakes can be divided into two groups. One group is the

_1 （初級破壞）, which is due to ground shaking. Another group is 2_ （次級災害）, which are triggered by an earthquake.

• 1 Primary hazard, 2 Secondary hazard

• 1 Secondary hazard, 2 Primary damage

• 1 Primary damage, 2 Secondary hazards

• 1 Primary damage, 2 Secondary damage

Examples of primary damage of earthquake include: (Select all correct answers)

• Damage of buildings

• Disruptions of traffic

• Tsunamis and landslides

• Food shortages

Examples of secondary hazards of earthquake include: (Select all correct answers)

• Tsunamis

• Landslides

• Fires

• Typhoons

• Hail