How can you tell the difference between plutonic and volcanic igneous rocks?
A) A volcanic rock is fine-grained; a plutonic rock is coarse-grained.
B) A volcanic rock experienced more pressure, so they are smaller; plutonic rocks are larger.
C) A volcanic rock has less silicate material than plutonic.
D) A volcanic rock is much hotter than a plutonic rock.
Answer: A
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Travelers flying west from Los Angeles (118° W) to Tokyo (139° E) will cross the ________ and, as a result, they will ________ when crossing this meridian
A) International Dateline; gain a day (Example: Sunday becomes Saturday.) B) International Dateline; lose a day (Example: Saturday becomes Sunday.) C) prime meridian; gain a day (Example: Sunday becomes Saturday.) D) prime meridian; lose a day (Example: Saturday becomes Sunday.)
Wave action works to straighten a coast as wave energy focuses around headlands and tends to disperse energy in coves and bays in a process called
A) longshore current. B) breakers. C) wave refraction. D) tidal bore.
How does a bridge promote erosion in a channel?
a. ?The bridge pilings interfere with the water flow, causing additional sediments to be deposited. b. ?The water velocity decreases, due to restricted flow over the floodplain. c. ?The water velocity increases, due to restricted flow over the floodplain. d. ?The channel height decreases, and large particles fall out, creating more surfaces for erosion to occur. e. ?A bridge does not promote erosion.
What is NOT true about erosion done by mountain glaciers?
A. Erosive work tends to make slopes steeper. B. Valleys will become carved out and widened. C. Relief between peak and valley will increase. D. Valleys will no longer be a stream-cut “V” shape. E. Peaks are not covered by ice and not eroded.