Briefly explain why it is often difficult to assign a reliable numerical date to a sample of sedimentary rock
What will be an ideal response?
A sedimentary rock may include particles that contain radioactive isotopes, but the rock's age cannot be accurately determined because the grains that make up the rock are not the same age as the rock in which they occur. Rather, the sediments have been weathered from rocks of diverse ages.
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Use the map below to answer this question.
The map illustrates the relative positions of a warm and cold front. Where is the warm front located?
A. Between A and B B. At E C. Between C and D D. Between C and G
To develop a persistence forecast of minimum and maximum temperatures for a particular city, which of the following types of charts is most helpful?
A. adiabatic chart B. surface chart C. meteogram D. 500 hPa chart
The annual range of temperature may be described as:
A) the difference between maximum and minimum temperatures over a period of one year. B) the difference between the average temperatures of the warmest and coldest months. C) the difference between maximum and minimum temperatures during the period of one month. D) the sum of the average temperatures for each month of the year.
Which of the following is not an example of a foliation in a metamorphic rock?
A) compositional banding B) parallel alignment of flattened pebbles C) parallel alignment of platy or flat minerals D) bedding planes and strata