Tectonic Hazards

Question 1

. Three ways to describe the distribution of volcanoes are…

Answer 1

1. Often found in lines.
2. They often occur together.
3. Usually on the edges of tectonic plates.

Question 2

At a conservative plate boundary the plates move…

Answer 2

Side by side

Question 3

Earthquakes occur at destructive plate boundaries because…

Answer 3

Friction causes the tectonic plates to stick. Pressure builds up and is released suddenly. This triggers an earthquake as seismic waves travel through the earth’s crust.

Question 4

Two primary effects of earthquakes are…

Answer 4

1. Buildings and roads damaged
2. Burst water pipes

Question 5

Two secondary effects of earthquakes are…

Answer 5

1. People made homeless as a result of collapsed buildings.
2. Waterborne diseases such as cholera spread through contaminated water.

Question 6

To convert millimetres to cms…

Answer 6

Divide the number by 10

Question 7

Two ways Japan has reduced the effects from tectonic hazards are…

Answer 7

1. Designing and constructing earthquake proof buildings.
2. Have regular evacuation drills and well signposted evacuation routes.

Question 8

One reason why the effects from tectonic hazards are often greater in low income countries (LICs) is…

Answer 8

Emergency services tend to be smaller and they lack adequate training and access to specialist equipment.

Question 9

Three methods that can be used to monitor and predict volcanic eruptions are…

Answer 9

1. Seismometers
2. Tiltmeters
3. Monitor Hot Springs

Question 10

Tiltmeters work by…

Answer 10

Measuring the gradient of a volcano. If it increases, this could indicate the volcano is filling with magma and is about to erupt.