Which of the following is not a way in which we map and investigate the seafloor?
a) bouncing sound waves from a ship off the bottom
b) drilling holes into the seafloor from ships
c) using satellites to observe the sea floor surface
d) conducting seismic surveys to investigate rock layers
e) we use all of these techniques
Ans: e) we use all of these techniques
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The law of conservation of matter states that
a. Atoms can be created. b. Atoms can be destroyed. c. Atoms cannot be created or destroyed. d. Atoms can be destroyed if we compost them. e. Atoms can be created through nuclear fission.
Which of the following conditions are probably occurring when large raindrops hit the ground?
A. thick cloud overhead and weak updrafts B. thick cloud overhead and strong updrafts C. thin cloud overhead and weak updrafts D. thin cloud overhead and strong updrafts
A higher level of pH is associated with more hydrogen ions
a. True b. False
A front is a boundary between two air masses
Indicate whether the statement is true or false.