QUESTION 17 Chapter 3.4.1. True/False: Over r 70% of the Earth\'s rocky surface
ID: 153836 • Letter: Q
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QUESTION 17 Chapter 3.4.1. True/False: Over r 70% of the Earth's rocky surface is covered by basalt lavas that have erupted within the last 200 million years. True O False QUESTION 18 Chapter 3.4.2. True/False: Though it is covered with lava flows in many areas, no obvious volcanoes have been identified on the Moon. True O False QUESTION 19 Chapter 3.4.4. What infuence does the crushing pressure of Venus' atmosphere (90 times that of Earth) have on its volcanic eruptions? It causes the development of the tallest volcanoes in the Solar System. O b. It causes most volcanic flows to be explosive. O c. it limits explosive eruptions and the height of any eruptive columns. o d. It causes lava to not flow far along the surface. QUESTION 20 Chapter 3.4.6. Which statement about Jupiter's moon lo's volcanic activity is not true? O a It has the most active volcanoes in the Solar System. O b. It has the tallest volcano in the Solar System. O They are a result of tidal heating. O d. The lava flows tend to reach great distances (as far as s 700 km).Explanation / Answer
Answer 1(17)
false
Basalt rocks are igneous rocks which are formed by cooling of magnesium and iron content of lava.
more than 90% of rocks on earth surface is basalt rocks.
Answer 2(18)
true
Eventhough there are lot of Magma under moon surface there are no active volcanos in moon surface maInly because of the fact that viscosity of lava in moon.volcanos are formed only when hot molten lava comes out of the surface.. here in moon due to the density of molten rocks found in moon is high that it is unable to rise to the surface of the moon.
answer 3(19)
Influence of crushing pressure on its volcanic eruptions
answer C it limits explosive eruption and height of any eruptive cooumns
Due to venus close proximity to sun and presence of large amount of co2 in its atmosphere the surface temperature of venus is more than 450 degree C and has a surface pressure of more than 90% compared to earth and as a result of it there is no water presence in its atmoshpere and surfaceand the wind speed is also very less. this limits the explosive eruption of venusian volcanos because due to high pressure it requires more gas content to explose and erupt.
Answer 4(20)
b. It has the tallest volcano in the solar system
the tallest volcano in the solar system is OLYMPUS MONS of planet MARS.
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