Plummer et al - Physical Geology (Homework)

James Finch

Environmental Science, section 001, Fall 2010

Instructor: Dr. Friendly

Current Score: 6/6

Due: Tuesday, October 19, 2010 16:00 EDT

Question

Points

1	2	3	4	5
1	1	2	1	1

Total

6/6

Description

Here are some textbook questions from Physical Geology 9/e by Plummer, McGeary, and Carlson published by McGraw-Hill. Click here for a list of all of the questions coded in WebAssign.

Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.

1. 1/1 points All Submissions Notes Question: Plummer9 1.TB.21.

Question part

Points

Submissions

1
1
2/50

Total

1/1

The plates that form Earth's rigid outer shell move relative to each other at rates that generally range from ___ a year.

2. 1/1 points All Submissions Notes Question: Plummer9 2.TB.16.

Question part

Points

Submissions

1
1
4/50

Total

1/1

Given two quartz crystals that grew freely into a gas- or fluid-filled space, the angles between corresponding faces on the two crystals are unlikely to be the same.

true false

Your answer is correct.

3. 2/2 points All Submissions Notes Question: Plummer9 3.TB.42.

Question part

Points

Submissions

1	2
1	1
2/50	1/50

Total

2/2

Within a magma chamber, Your answer is correct.

minerals tend to crystallize early (at higher temperatures) and Your answer is correct.

minerals tend to crystallize later (at lower temperatures).

4. 1/1 points All Submissions Notes Question: Plummer9 4.TB.28.

Question part

Points

Submissions

1
1
1/50

Total

1/1

Dust injected into the upper atmosphere by large volcanic eruptions can have the effect of ___. (Select all that apply.)

damaging aircraft that fly through the dust causing unusual weather reducing the sunlight that reaches Earth's surface, suppressing photosynthetic processes reducing Earth's surface temperature

Your answer is correct.

5. 1/1 points All Submissions Notes Question: Plummer9 5.TB.45.

Question part

Points

Submissions

1
1
4/50

Total

1/1

After the complete chemical weathering of a limestone composed entirely of calcite, a primary product of that weathering is ___. (Select all that apply.)

none of these bicarbonate ions in solution calcium ions in solution an acid

Your answer is correct.

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Plummer et al - Physical Geology (Homework)

Current Score: 6/6