The next question refers to This Mystery Rocks! by Cynthia Schlagel. The sentences have been numbered to help you identify them more easily.

This Mystery Rocks! By Cyntha Schlagel

1The Drifting Rocks are a strange phenomenon still unexplained by science. 2Located in Death Valley, California, the rocks sit on hot, flat ground. 3Unlike normal rocks, they have trails etched behind them as if they have traveled across the sand. 4Some trails are only a few feet. 5Some trails are over a half a mile long. 6Each trail is as baffling as the next.

7The variety of rock movement has baffled scientists for decades. 8Some rocks seem to roll as they move forward. 9Some take unexplainable routes. 10Large ones have traveled past small ones that have stayed still. 11Some scientists suggest that the rocks are pushed by wind. 12Others believe they slide on small amounts of ice or mud. 13So far, research has not confirmed any theory.

Which sentence best identifies the main idea of paragraph two?

Scientists are baffled by the different ways the rocks move.
Scientists are confused by the different ways the rocks move, and theories involving wind, ice, and mud have not been confirmed.
Scientists have theories of how the rocks move.
The rocks have stumped scientists because some roll, some take unexplainable routes, and some have traveled past ones that have stayed still, but scientists have theories that the rocks are pushed by wind or that they slide on ice or mud.
Question 7(Multiple Choice Worth 3 points)
(LC)

An article tells the life story of an inventor. It begins with his birth then discusses his years at school. After exploring his great inventions, the article ends with his death.

Which choice best describes how the author organized information?

Cause and effect
Chronological order
Fact by fact
Problem-solution
Question 8(Multiple Choice Worth 3 points)
(LC)

Which choice provides the most accurate definition of a summary?

A long, paraphrased version of a text that mentions its key points
A shortened, paraphrased version of a text
A shortened, paraphrased version of a text that mentions its key points
A shortened version of a text that mentions its key points
Question 9 (Essay Worth 20 points)
(HC)

Read The Ins and Outs of Bellybutton Lint, by Joel Guthrie. Using the steps discussed in this lesson, write a one-paragraph summary in the text box that follows the article.

The Ins and Outs of Bellybutton Lint, by Joel Guthrie

Some scientists gaze into outer space to look for answers. Some scientists seek answers in the depths of the sea. When Georg Steinhauser wanted answers, he looked within himself. Well, he looked within his bellybutton to be exact. The Austrian chemist spent three years researching the contents of his navel and the navels of others. He has solved one of life's greatest mysteries. We now know exactly what bellybutton lint contains!

Steinhauser presented his findings in the online version of the journal Medical Hypotheses. The Vienna University scientist analyzed over 500 samples to determine the exact makeup of the lint. As suspected, most of the lint was made up of cotton from clothing. The fabric pieces are not alone, though. Steinhauser found that the average bellybutton also contained pieces of dead skin, sweat, dust, and fat.

Steinhauser's notes also explained how lint accumulates. Stomach hairs tend to grow in a circular pattern around the bellybutton. The hairs act like small hooks, capturing and holding contents within. Shaving stomach hair can lead to a lint-free bellybutton, but don't act too hastily. Although the contents of your navel may be a nuisance, research suggests that lint has a purpose. It is nature's way of protecting your bellybutton from germs and unwanted objects.

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