From When Stars Explode R.I. 1.2

Part A -What are TWO main ideas of the article by Ken Croswell?

• Supernovae are violent explosions of stars.

• Astronomers did not always use telescopes.

• Astronomers can see supernovae for months.

• Stars make energy through nuclear reactions.

• Stars produce light that travels across the universe.

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CCSS.RI.5.2

CCSS.RL.5.2

CCSS.RI.4.2

CCSS.RI.6.2

CCSS.RL.4.2

Part B -Which TWO sentences from the article best support the answer to Part A?

• "The last time people saw a supernovae in our galaxy was 1604".

• "That was before astronomers were using telescopes".

• "Such a star is born with a mass of over eight times the sun".

• "Its center makes energy the same way the Sun does: by changing hydrogen, the lightest element into helium, the second-lightest element.

• "If a supernovae occurred within a few dozen light-years of Earth, we would be in trouble".

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CCSS.RL.5.1

CCSS.RL.5.2

CCSS.RI.5.2

CCSS.RL.4.1

CCSS.RI.6.2

Which sentence is one main idea of the article?

• In 1604 , a supernovae exploded.

• Supernovae make important elements.

• Astronomers did not always use telescopes.

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CCSS.RI.5.2

CCSS.RL.5.2

CCSS.RL.6.2

CCSS.RI.6.2

CCSS.RL.4.2

Which sentence is a supporting detail of that main idea?

• "And the explosions themselves produce iron".

• "The outflow of huge amounts of energy-much of light-pushes outward from the star's center".

• "This nuclear reaction creates energy that heats the star and makes it shine".

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CCSS.RI.5.2

CCSS.RL.5.2

CCSS.RL.5.1

CCSS.RL.6.1

CCSS.RL.4.1

Which sentence is another main idea of the article?

• Antares is a massive star.

• Only some stars will become supernovae.

• Hydrogen is the lightest element.

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CCSS.RI.5.2

CCSS.RL.5.2

CCSS.RI.4.2

CCSS.RL.6.2

CCSS.RL.4.2

Which sentence is a supporting detail to that main idea?

• "The last time people saw a supernovae in our galaxy was 1604".

• "However, every year astronomers see supernovae exploding in other galaxies".

• "The Sun will never explode".

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CCSS.RL.5.1

CCSS.RI.5.2

CCSS.RL.5.2

CCSS.RI.4.2

CCSS.RL.6.1

Read the following sentence from the text.

But as long as the star can make energy, it can fight the force of gravity and survive.

Which definition best defines energy?

• physical strength

• hydrogen and helium gas

• heavy metals that increase weight

• power that comes from heat

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CCSS.RL.5.4

CCSS.RL.5.1

CCSS.RI.5.4

CCSS.RL.6.4

CCSS.RL.4.4

Why is Antares called a massive star?

• It is hot, bright, and blue.

• It is more than eight times the mass of the sun

• It can fight the force of gravity.

What i the distance that light speeds through in one year?

• 6 trillion miles

• 4 trillion miles

• 10,000 miles

• 10 miles

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CCSS.6.RP.A.3D

Would we exist without supernovae?

• YEs

• No