Volcanism

Question 1

shield like volcanoes

Answer 1

-shield/round profile
-found on venus, earth, and mars
-form over hot spots in the mantle
-basaltic lavas
-formed through gentle eruptions over time

Question 2

Olympus Mons (Mars)

Answer 2

-300 miles wide and 15 miles high
-about size of Ohio
-shield volcano

Question 3

paterae

Answer 3

-old, nearly flat volcanoes
-very long lava flows
-basaltic ash
-alba patera (mars)

Question 4

pancake domes

Answer 4

-broad, flat profile
-made from granite magma
-basaltic ash
-domes on Venus

Question 5

coronae

Answer 5

-large circular depressions
-made as rising magma flattens, cools, and sinks
-ex. Artemis corona on Venus

Question 6

composite volcanoes

Answer 6

-only on earth
-steep cone like profile
-occurs over sinking oceanic crust
-andesitic lavas made from melting basalt

Question 7

seafloor basalts

Answer 7

-only on earth
-basalts extruded at mid ocean ridges
-spreads in both directions to create new seafloor

Question 8

volcanism

Answer 8

-seen on all 5 terrestrial planets
-many forms
-the eruption of molten rock (magma) onto the surface of a planet

Question 9

flood basalts

Answer 9

-from fissures
-uncommon on the earth
-comes from a giant volcanic eruption or series of eruptions that cover large areas of land

Question 10

terrestrial plains

Answer 10

-large flat plains where lava once flowed but is now cooled
-usually basalt

Question 11

lunar flood basalt (moon)

Answer 11

-paved mare basin son near side of the moon

Question 12

mercury flood basalt

Answer 12

-paved parts of mare basins

Question 13

mercury intercrater plains

Answer 13

-many small craters

Question 14

Venus volcanic plains

Answer 14

-covers 80% of the planet
-basaltic
-only 500 million years old so planet was resurfaced

Question 15

Martian plains

Answer 15

-volcanic?
-basaltic
-1-3 billion years old