LW Nevado Del Ruiz

Question 1

Where is Nevado Del Ruiz?

Answer 1

It is in Columbia, in the northen Andes

Question 2

When was the main eruption?

Answer 2

13th November 1985

Question 3

What type of volcano was NDR?

Answer 3

composite

Question 4

Define the term lava

Answer 4

The molten rock that is issued from a volcano

Question 5

Define the term lahar

Answer 5

A landslide of water and ash

Question 6

In the eruption, which direction was the Nazca plate moving?

Answer 6

In an easterly direction

Question 7

In the eruption, what direction was the South American plate moving?

Answer 7

West

Question 8

How many people did it kill?

Answer 8

About 25,000

Question 9

Is the oceanis plate or the continental plate denser?

Answer 9

The oceanic plate

Question 10

Was the Nazca plate continental or oceanic?

Answer 10

Oceanic

Question 11

Was the South American plate oceanic or continental?

Answer 11

Continental

Question 12

Did the Nazca plate subduct under the South American plate or was it the other way round?

Answer 12

The Nazca plate subducts under the South American plate

Question 13

At what depth was the pressure high enough to to melt the oceanic plate?

Answer 13

200KM

Question 14

Where was the weak spot in NDV?

Answer 14

In the mantle and crust

Question 15

What did NDV shoot out?

Answer 15

Molten lava

Question 16

Was there a lahar or not?

Answer 16

Yes, there was a lahar.

Question 17

Why did the people of Armero ignore the warning signs about this eruption?

Answer 17

Because it hadn’t erupted for 100 years

Question 18

By the next morning, how thick was the layer of mud?

Answer 18

8m high

Question 19

What was a consiquence of ignoring warning signs?

Answer 19

There was not an emergency team or any aid on hand to help.

Question 20

What time did the volcano erupt? What were the problems with this?

Answer 20

11pm and everyone was asleep so it was harder to make a quick escape.