Wegener thought that ________
A) there were once several continents that recombined to form the continents we have today
B) there was once one big continent that later broke into several pieces
C) there were once two big continents that were separated later by the Atlantic Ocean
D) there was once one big continent that was later separated by the Atlantic Ocean
B
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The apparent deflection of objects moving in the air that is caused by the rotation of the earth is called the ________
Fill in the blank(s) with the appropriate word(s).
What is the combined area of the oceans and the ??-m fl oodwaters? (Refer
to question ?b and Table ? in this investigation. Be sure to include your units). What will be an ideal response?
What does the term half-life describe?
A. time needed for half of the radioactive atoms in a substance to convert into energy. B. half the time needed for a radioactive substance to become safe. C. time needed for half the cells in an organism to turn cancerous from radiation damage. D. half the time needed for cells in a living organism to recover from radiation damage. E. time needed for half of the radioactive atoms in a substance to decay into stable isotopes.
Which of the following statements best describe how evaporite deposits form?
A. minerals associated with hydrothermal activity. B. minerals precipitating out of a solution. C. minerals that remain within a soil during chemical weathering. D. minerals accumulating in soils as water percolates downward. E. mineral crystals that settle in a magma chamber.