CMAS ELA practice BVIS

Which statement best expresses the central idea of the text?

• Scientists are curious to discover what allows some supernovas to be seen from Earth over others.

• The sudden change in a star’s core that results in a supernova is a visible occurrence that can help inform scientists on the universe.

• By observing the collapse of stars, scientists can develop a better understanding of the life cycle of our own planet.

• Supernovas are rare and difficult to identify, which is why scientists have enlisted the help of anyone willing to look for them.

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CCSS.RI.7.2

CCSS.RL.6.2

CCSS.RI.6.2

CCSS.RI.8.2

CCSS.RL.8.2

What detail from the text best supports the Main Idea from question 1?

• "Supernovas are often seen in other galaxies. But supernovas are difficult to see in our own Milky Way galaxy because dust blocks our view.” (Paragraph 2)

• “Scientists also have determined that supernovas play a key role in distributing elements throughout the universe. When the star explodes, it shoots elements and debris into space.” (Paragraph 8)

• “NASA scientists use different types of telescopes to look for and study supernovas. Some telescopes are used to observe the visible light from the explosion.” (Paragraph 9)

• “Then in January 2011, a 10-year-old girl from Canada discovered a supernova while looking at night sky images on her computer.” (Paragraph 11)

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CCSS.RI.7.2

CCSS.RL.6.2

CCSS.RL.7.1

CCSS.RL.7.2

CCSS.RL.8.1

Which of the following identifies the main difference between the two causes of a supernova?

• While white dwarfs take on too much mass from another star and explode, other stars collapse inward and then explode.

• Both binary starts become supernovas, as one takes on too much matter and the other has too much removed from its core.

• While white dwarfs explode from taking on too much heat, other stars collapse inward from having too much matter sucked away.

• All stars die and explode the same way, except for the sun, which isn’t big enough to become a supernova.

Which quote from the text best supports the answer to Question 3?

• “A supernova happens where there is a change in the core, or center, of a star.” (Paragraph 3)

• “The first type of supernova happens in binary star systems. Binary stars are two stars that orbit the same point.” (Paragraph 4)

• “the white dwarf accumulates too much matter. Having too much matter causes the star to explode, resulting in a supernova.” (Paragraph 4)

• “The second type of supernova occurs at the end of a single star’s lifetime.” (Paragraph 5)

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CCSS.RI.7.2

CCSS.RL.6.2

CCSS.RI.8.2

CCSS.RL.7.2

CCSS.RL.8.2

Which of the following describes the cause of a supernova?

• one star gets too close to another

• a star produces too much nuclear fuel

• the center of a star undergoes a dramatic change

• a star changes temperatures abruptly

Which of the following is NOT an example of how scientists can learn from supernovas?

• Supernovas help scientists understand how elements are spread.

• Supernovas help scientists understand the growth rate of the universe.

• Supernovas help scientists understand how new planets are formed.

• Supernovas help scientists understand where other planets are located.

Which of the following describes how supernovas can be observed?

• Supernovas can be seen using basic telescopes.

• Supernovas can only be observed using telescopes in space.

• Supernovas cannot be seen, only detected by their rays.

• Supernovas can only be observed by scientists who know what to look for.

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CCSS.RI.7.2

CCSS.RL.6.2

CCSS.RI.6.2

CCSS.RL.7.1

CCSS.RL.6.1

Re-read this section of the article.

"Then in January 2011, a 10-year-old girl from Canada discovered a supernova while looking at night sky images on her computer. The images, taken by an amateur astronomer, just happened to include a supernova."

What does the word "amateur" mean in this sentence?

• nonprofessional, novice

• non-human

• very experienced

• college-level

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CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RL.6.4

CCSS.RL.7.4

CCSS.RL.8.4