Volcanoes and Earthquakes

Question 1

Focus -

Answer 1

The focus is the place inside Earth’s crust where an earthquake originates

Question 2

Epicentre -

Answer 2

the point on the Earth’s surface direcrly above the focus

Question 3

Magnitude -

Answer 3

The measure of the total amount of energy an earthquake has

Question 4

Intensity -

Answer 4

A measure of the impacts of the earthquake on the surface

Question 5

Momentum Magnitude Scale -

Answer 5

a scale of measurements for the magnitude of an earthquake

Question 6

Mercalli Scale -

Answer 6

a scale of measurements of the intensity of an earthquake

Question 7

Short term relief -

Answer 7

provides immediate support during or after a disaster (eg food, medicines, shelter)

Question 8

Long term relief -

Answer 8

the improvement and management of impacts and hazards ovre a long period of time

Question 9

Primary impact -

Answer 9

impacts occur immediately as the earthquakes happen

Question 10

Secondary impacts -

Answer 10

impacts of the effects that occur directly as a result of this earthquake

Question 11

P waves

Answer 11

‘Primary waves’ is the first type of seismic wave produced by an earthquake. They travel faster than other waves and are not destructive

Question 12

S waves

Answer 12

‘Secondary waves’ is the second type of waves produced by an earthquake. They are slower than P waves but are much more destructive.

Question 13

Early warning system -

Answer 13

multiple devices or systems triggered by seismic waves to alert people threatened by a hazard to act timely and appropriately

Question 14

Counterweight -

Answer 14

a methode to negate the effects of an earthquake, counterweight is a weight that, by exerting an opposite force, provides balance and stability of a structure