The process by which a single magma can generate several magmas of different compositions is
A) partial melting.
B) partial crystallization.
C) fractional crystallization.
D) partial distillation.
Answer: A
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The ultimate source of all magnetism is
A) tiny bits of iron. B) tiny domains of aligned atoms. C) ferromagnetic materials. D) moving electric charge.
If a rock concert has a sound level of 120 dB associated with it and a cheering crowd has a sound level of 90 dB associated with it, how many times greater is the rock concert's intensity compared to the cheering crowd's intensity?
1.30 2.90 3.300 4.1000
How much heat, in joules, is required to convert 1.00 kg of ice at 0°C into steam at 100°C? (LF,ice = 333 J/g; LV,steam = 2.26 × 10^3 J/g.)
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