List three common natural cements used in cementation of sedimentary rocks
What will be an ideal response?
Answer: Silica, calcite, and iron oxide (rust)
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What is the highest elevation on the map segment? Location and name:
A sinuously curving, narrow ridge of coarse sand and gravel is called an esker. Eskers form along the channel of a meltwater stream that flows beneath a glacier, in an ice tunnel, or between ice walls beneath the glacier. As a glacier retreats, the steep-sided esker is left behind in a pattern roughly parallel to the path of the glacier. What will be an ideal response?
The Atlantic and Gulf Coastal Plain physiographic province has which of the following characteristics?
A) Many fertile swamps and marshes B) Low, rolling hills C) Folding, uplift, and faulting D) Small mountain ranges and flat valleys
Which piece of evidence does NOT indicate that a barrier island has migrated landward?
a. ?A lighthouse that was built onshore is now well offshore. b. ?Oyster shells that grew in the sheltered lagoon behind the barrier island are now found on the front beach. c. ?Stumps of trees that grew along the lagoon are now found on the front beach. d. ?Barrier island beaches are now more easily eroded than they were one hundred years ago. e. ?Fine-grained lagoon sediments are layered beneath the sands of the barrier island.
Which country in Oceania is most vulnerable to ozone depletion and suffers high levels of skin cancer?
A) Australia B) New Zealand C) Papua New Guinea D) Solomon Islands E) Fiji