Lava

Question 1

Basaltic lava is made at ____________ plate boundaries

Answer 1

constructive

Question 2

Andesitic lava is made at ___________plate boundaries

Answer 2

destructive

Question 3

Rhyolitic lava is made at ___________ plate boundaries

Answer 3

destructive

Question 4

Basaltic lava has a ___ siclia content and a ___ viscosity

Answer 4

low (runny)

Question 5

Basaltic lava has an eruption temperature of ___c + usually ____c - ____*c

Answer 5

950c 1100c-1200*c

Question 6

Andesistic lava has a ______ siclia content and a ______ viscosity

Answer 6

medium medium

Question 7

Andesistic lava has an eruption temperature of ___ c-___c

Answer 7

750c to 950c

Question 8

Rhyolitic lava has a ____ siclia content and a ____ viscosity

Answer 8

High High (thick and sticky)

Question 9

Rhyoltic lava has an eruption temperature of less than ___*c

Answer 9

750*c

Question 10

Basalitic lava has a low viscosity so it _____ easily and ___ can escape from it easily.

Answer 10

flows gas

Question 11

Eruptions of basaltic lava are not _______

Answer 11

violent

Question 12

Basaltic lavas usually erupt ___________ and for ____ periods of time.

Answer 12

frequently long

Question 13

Andesitic and rhyolitic lava’s flow less _______ and often form _________ in volcanic vents.

Answer 13

easilly blockages

Question 14

Volcanic ______ can’t escape easily from viscous lava. Pressure builds up because of the lava blockages and trapped gasses, until the blockages are cleared by a _______ eruption.

Answer 14

gasses violent

Question 15

Andesitic and rhyolitic lava’s usually erupt _______________ and the eruptions are short lived.

Answer 15

intermittently - every once in a while