Which minerals are the first to crystallize in a cooling magma—minerals with a lower percentage of silica or minerals with a higher percentage of silica?
What will be an ideal response?
Answer: Minerals with a lower percentage of silica.
Physics & Space Science
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Life is present on Earth because of oxygen
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
When stars are moving away from us the color of their light is shifted toward the ______ (red or blue) end of the light spectrum because the wavelegth is ________ (shorter or longer).
a. red; longer b. red; shorter c. blue; longer d. blue; shorter
Physics & Space Science
The amount of heat that flows through a rod whose ends are held at different temperatures is proportional to the length of the rod
Indicate whether the statement is true or false
Physics & Space Science
The highest atmospheric layer in the Sun is the _______
a. photosphere b. corona c. chromosphere d. prominence
Physics & Space Science