Volcanoes

Question 1

What type of boundary are composite volcanoes located on?

Answer 1

destructive

Question 2

What type of boundary are shield volcanoes located on?

Answer 2

constructive

Question 3

size/shape of composite volcanoes

Answer 3

• steep sides cones
• now as big as the shield volcano
• tall

Question 4

size/shape of shield volcanoes

Answer 4

• low with gently sloping sides
• wide

Question 5

Lava characteristics of composite volcanoes

Answer 5

• sticky
• doesn’t flow far

Question 6

Lava characteristics of shield volcanoes

Answer 6

• runny lava
• thin

Question 7

Eruption type and frequency of composite volcanoes

Answer 7

• explosive, with hot ash clouds

Question 8

Eruption type and frequency of shield volcanoes

Answer 8

• frequent
• relatively gentle

Question 9

Ash cloud =

Answer 9

Is a cloud of hot gas that bursts out from the crater

Question 10

Lava flows :

Answer 10

Travel out the crater in all directions, usually at about 10-15 mph

Question 11

Pyroclastic flow =

Answer 11

is a fast moving current of superheated gas and rock

Question 12

Lava bombs :

Answer 12

shoot out of the volcanic crater nto the air and drop around the volcano

Question 13

Landslides =

Answer 13

It is when rock and mud slide down the side of the volcano
volcanic eruptions often cause earthquakes that trigger landslides

Question 14

Lahars =

Answer 14

Destructive mudflows or debris flows of volcanic origin, a slurry of pyroclastic material, rock fragments, and water, that flow down from a volcano, usually along a river valley