Briefly describe how igneous rocks are classified
What will be an ideal response?
Answer: Composition (minerals present) and texture (crystal size) are used to classify and name igneous rocks. Ultramafic, mafic, intermediate, and felsic are compositional categories for magma and igneous rocks. Light-colored silicate minerals dominate in silica-rich felsic rocks, whereas darker silicate minerals form mafic rocks.
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Indicate whether the statement is true or false.
It has been estimated that capturing the wind's energy at the world's best sites would only produce about 50% of the electricity currently being used worldwide
Indicate whether the statement is true or false
Of all the bodies in the solar system, Earth is the only location that contains liquid water
Indicate whether the statement is true or false
Which of the following aqueous solutions of Na2SO4 is isotonic with a 0.15 M NaCl solution?
A) 0.05 M B) 0.10 M C) 0.15 M D) none of these