Take Test: Unit IV Assessment

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Take Test: Unit IV Assessment

Test Information

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This assessment can be opened multiple times, but can only be submitted once. You may print this assessment to mark your answers prior to entering them online, or you may enter your answers directly online. Periods of inactivity will cause your assessment to time out resulting in an unwanted submission, so be sure to save each answer as you complete the question in order to avoid losing any work. For a description of the various types of questions you may encounter in an assessment, click here to view the Submission Instructions page. Outside sources are not required; however, when directly quoted or paraphrased works of others are used in any manner, the writer is obligated to properly cite the source of the original material. To view your Written Response Grading Rubric, click here.

QUESTION 1

Recall from your reading about the nature of volcanoes to choose the best answer: Magma tends to rise toward Earth’s surface principally because __.

of magma cooling

mounting pressure within the reservoir

rocks become more dense when they melt

of convection in the mantle

2 points Saved

QUESTION 2

Recall from your reading about the principle types of volcanoes to choose the best answer: Crater Lake, a caldera, formed from the collapse of a __.

2 points Save Answer

Question Completion Status:

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http://online.waldorf.edu/csu_content/waldorf_content/zulu/common_files/instructions/submissions/submissioninstructions.pdf
http://online.waldorf.edu/csu_content/waldorf_content/zulu/common_files/instructions/submissions/assessmentrubric.pdf
p composite volcano.

shield volcano.

cinder volcano.

lava dome

QUESTION 3

Recall from your reading about the nature of volcanoes to choose the best answer: A volcanic eruption is driven by _ and _ which forces its way upward and may ultimately break though zones of weaknesses in the Earth’s crust.

heat; water pressure

heat; gas pressure

buoyancy; gas pressure

buoyancy; water pressure

2 points Save Answer

QUESTION 4

Mt. Rainier in Washington State is an excellent example of what principle type of volcano?

An eroded shield volcano

A caldera

A stratovolcano

Flood basalts

2 points Save Answer

QUESTION 5

Due to the nature of volcanoes the violent separation of gas from lava forms __.

dikes

craters

cinders

pumice

2 points Save Answer

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A.

QUESTION 6

Recall your reading of Relative Time Scale and Radiometric Time Scale and match the term with the de�nition.

Isotopes

Half-life

Forms of life which existed during limited periods of geologic time and thus are used

8 points Save Answer

Question Completion Status:

Click Save and Submit to save and submit. Click Save All Answers to save all answers.

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B.

C.

D.

E.

F.

G.

H.

Carbon 14

Igneous rocks

Hutton

Petrology

Index fossil

Stratigraphy

as guides to the age of the rocks in which they are preserved

Atoms of the same element with di�ering atomic weights

Isotope found in all living plants and animals

The time it takes for one-half of a particular radioactive isotope in a sample to decay

Rocks that generally do not contain fossils

The Scottish geologist who �rst proposed the fundamental principle used to classify rocks according to their relative ages

Studies of rock layering

Studies on the origins of the various kinds of rocks

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