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Question 5
A) How do authors demonstrate complex relationships in an informational text? Select the two correct answers. (1 point)
by using text structure to clarify various interactions.
by providing evidence that illuminates their connections.
by including mathematical equations.
by identifying two or more ideas or events.
by paraphrasing key findings.
"Science: Why Shoelace Knot Failure"
by Nsikan Akpan
To break down the physics of the phenomena, the researchers attached a small device to the free end of the laces that measured acceleration, and then Gregg went for a walk or a jog. This acceleration creates inertia, which is the tendency
for an object to keep moving once it is in motion.
“We were surprised that the accelerations were so high. They’re like 7 g [units of acceleration] ,” O’Reilly said. “By way of comparison, the highest g on a roller coaster are 6.3. Your foot is experiencing these really high g-forces as you’re
running all the time. It’s a biomechanical miracle that all of that impact is absorbed through your body and spine.”
The knot itself is under pressure too. The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform. Once the knot opens sufficiently, then the free end of the lace, which is being tugged by
inertia, begins to slip out.
© NewsHour Productions LLC. All Rights Reserved.
A)
Use the passage from “The Science Behind Why Your Shoelace Knot Is Doomed to Fail” by Nsikan Akpan to answer the question.
Connection: The g-forces put pressure on the knots in the same way they put pressure on the body and spine.
Which pieces of evidence support the connection? Select the two correct answers.
(1 point)
“To break down the physics of the phenomena, the researchers attached a small device to the free end of the laces that measured acceleration, and then Gregg went for a walk or a jog.”
“The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform.”
“Your foot is experiencing these really high g-forces as you’re running all the time.”
“We were surprised that the accelerations were so high.”
“This acceleration creates inertia, which is the tendency for an object to keep moving once it is in motion.”
To establish complex relationships in an informational text, the author provides that illuminates their , using words and that clarify the various interactions.
A) Choose the words that complete the sentence. (1 point)
A) Which of these would normally appear in a scientific abstract? Select the two correct answers. (1 point)
conclusions
methods
samples
examples
predictions
"Science: Why Shoelace Knot Failure"
by Nsikan Akpan
No matter how tight you tug, it feels like some shoelaces are doomed to come untied.
Fret no longer, as new research from the University of California, Berkeley, has figured out the physics behind why the knots fail and why some shoelaces are more prone to the mistake.
While the poetic inevitability of the slipup may provide comfort to those afflicted by wayward shoelaces, the research published Tuesday in the Proceedings of the Royal Society of London A may also provide clues for building soft,
lifelike robots.
Mechanical engineer Oliver O’Reilly began looking into this telltale problem three years ago, after trying to teach his young daughter to tie her shoes.
“I went online and found all these helpful videos about how to tie your shoelaces,” O’Reilly said. “They were wonderful and very helpful, but I also noticed there were no videos online about why your shoelaces become untied.”
A)
Use the passage to answer the question.
Drag each sentence into the correct order to accurately summarize the text.
(2 points)
 A researcher wondered about the science behind shoelaces coming untied.
 Research showed that a single kind of motion did not cause shoelaces to come untied.
 It is a combination of the two main movements used in walking that leads to shoelace knot failure.
 Two graduate students began to study the effects of motion on shoelace knots

1 answer

Question 1: A) How do authors demonstrate complex relationships in an informational text? Select the two correct answers. (1 point)

  • by using text structure to clarify various interactions.
  • by providing evidence that illuminates their connections.

Question 2: Use the passage from “The Science Behind Why Your Shoelace Knot Is Doomed to Fail” by Nsikan Akpan to answer the question. Connection: The g-forces put pressure on the knots in the same way they put pressure on the body and spine. Which pieces of evidence support the connection? Select the two correct answers. (1 point)

  • “Your foot is experiencing these really high g-forces as you’re running all the time.”
  • “The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform.”

Question 3: To establish complex relationships in an informational text, the author provides evidence that illuminates their connections, using words and phrases that clarify the various interactions.

Question 4: A) Which of these would normally appear in a scientific abstract? Select the two correct answers. (1 point)

  • conclusions
  • methods

Question 5: Use the passage to answer the question. Drag each sentence into the correct order to accurately summarize the text. (2 points)

  1. A researcher wondered about the science behind shoelaces coming untied.
  2. Two graduate students began to study the effects of motion on shoelace knots.
  3. Research showed that a single kind of motion did not cause shoelaces to come untied.
  4. It is a combination of the two main movements used in walking that leads to shoelace knot failure.