Answered

Question 41 (1 point)
Which of the following lavas make up 90 percent of the total volume of lava on Earth?

Question 41 options:

Andesitic


Felsic


Basaltic


Granitic

Question 42 (1 point)
Using the topographic map shown, what is the direction that the Test River is generally flowing towards?

Question 42 options:

East


West


North


South

Question 43 (1 point)
Shield volcanoes such as those found in Hawaii are formed from __________ magma

Question 43 options:

andesitic


basaltic


granitic


porphyritic

Question 44 (1 point)
Most of the world’s ice sheets are located in Greenland.

Question 44 options:
True
False

Answer :

Answer:

Q. 41. Basaltic Lava,   Q.43. Basaltic magma  Q.44. False

Explanation:

Basalt is a mafic extrusive igneous rock, formed by the rapid cooling of Mg and Fe rich lava, exposed at or near the surface of the earth. Thus forming about 90% of the surface lava on earth.

Shield Volcanoes emit lava or magma in the form of viscous basaltic lava. Highly explosive.

Greenland and Antarctica together constitute the 99% of the earth ice caps so, Greenland has about 80% cover as compared to antarctic 98% and both are depleting fast.

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