Why do locations on Earth's surface experience a daily change in daylight to night?
a. Earth's tilt on its axis.
b. The difference between perhelion and aphelion.
c. Earth's revolution around the Sun.
d. Earth's rotation around its axis.
d. Earth's rotation around its axis.
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Which of the following sites would most likely have composite volcanoes? A is on an island arc, B is in the Andes, C is near Hawaii, D is along a midocean ridge.
A) A and B
B) B and C
C) C and D
D) A and C
E) B and D
How is it possible for a neutral molecule, such as water, to form an ion?
A) It can combine with a hydrogen ion to form a positively charged species. B) It can combine with a chloride ion to form a negatively charged species. C) It can fragment into protons and electrons. D) It can absorb electrons and become negatively charged. E) It can absorb electrons and become positively charged.
What is the name of the lightest hydrocarbon which has cis and trans isomers?
A) 1-butene B) 2-butene C) 1,2-dimethylcyclopropane D) propene
The Pacific Ring of Fire is formed by
A. earthquakes. B. a string of volcanoes. C. a string of seamounts. D. island arcs.