The initial formation of Earth involved the solidification and cooling of ________
A) sediments
B) magma
C) metamorphic rocks
D) ice
E) strata
Answer: B
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What is the primary source of sodium ions to the ocean?
a. contact with fresh crust b. volcanic vents and outgassing c. weathering of crustal rocks d. percolating seawater through mid-ocean rifts e. dissolution of mineral deposits at hydrothermal vents
Sharks and rays tend to be larger than bony fish. Indicate whether the statement is true or false
The wavelength of radiation is ____ proportional to the energy carried per wave
A) directly B) not C) slightly D) inversely
A beaker contains a mixture of ice and pure liquid water at 0°C. What happens to the temperature of the liquid water as heat is added?
A) It immediately begins to rise slowly. B) It remains constant until the ice melts, and then it begins to rise. C) It rises rapidly as the ice melts. D) It rises slowly until it reaches 32°C, and then it remains constant as the ice melts. E) The temperature pattern cannot be predicted.