The ionization energy of an atom is which of the following?
A) the energy released when an atom gains an electron
B) the energy released when an atom loses an electron
C) the energy required to add an electron to an atom
D) the energy required to remove an electron from an atom
D
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The pressure gradient force is directed from higher pressure toward lower pressure ____
A) only at the equator B) at all places on Earth except for the equator C) only at the poles D) at all places on Earth
One distinguishing feature of all culture hearths of the Old World and the Americas is their:
A) abandonment as centers of culture and settlement in modern times B) clustering in a band around the earth between 20 degrees south and 40 degrees north latitude C) confinement to lowland river valleys D) location on the western sides of continental landmasses
An air layer is sometimes put between two panes of glass to help insulate a window because air cannot transfer much heat energy by _______________
Fill in the blank(s) with correct word
Our solar system is part of the ________ Galaxy. Fill in the blank(s) with the appropriate word(s)