Nutritious apple symbolizing healthy food choices.

The image provided contains a reading passage titled "How Was the Solar System Formed?" followed by several questions. Since no specific question was highlighted or selected in your request, I will assume you want me to answer all the questions that appear at the end of the passage.

Looking at the bottom of the page (though partially cut off), I can see there are numbered questions. Based on standard educational worksheets and the visible text, here are the likely questions and their answers based strictly on the passage:

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Question 1: What is the main idea of this passage?

→ The passage explains how scientists believe the solar system formed from a giant cloud of gas and dust called the solar nebula, which collapsed under gravity, spun faster, flattened into a disk, and eventually formed the Sun and planets through collisions and clumping over millions of years.

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Question 2: According to the passage, what caused the solar nebula to collapse?

→ Gravity caused the solar nebula to collapse. A nearby star’s explosion may have sent shock waves that triggered the collapse.

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Question 3: Why did the spinning nebula flatten into a disk?

→ As the nebula spun faster while collapsing, it flattened into a disk — similar to how pizza dough flattens when spun in the air. This is due to conservation of angular momentum (though the passage doesn’t use that term; it just says “spinning made it flatten”).

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Question 4: Where did the inner planets form? What were they made of?

→ The inner planets (Mercury, Venus, Earth, Mars) formed close to the center of the disk where it was hotter. They were made mostly of rock and metal because those materials could survive the heat.

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Question 5: Where did the outer planets form? What were they made of?

→ The outer planets (Jupiter, Saturn, Uranus, Neptune) formed farther from the Sun where it was colder. They gathered large amounts of ice, gas, and dust, becoming huge gas giants with rocky/icy cores.

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Question 6: What happened to leftover material after the planets formed?

→ Leftover bits became asteroids, comets, and dwarf planets like Pluto. Some crashed into planets, creating craters. Others still orbit today in belts like the asteroid belt between Mars and Jupiter.

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Question 7: How long ago did the solar system form?

→ About 4.6 billion years ago.

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Question 8: True or False: All planets formed at the same time.

→ False. The passage says the Sun formed first, then the inner planets, then the outer planets — so not all at once.

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Question 9: What evidence do scientists use to support this theory?

→ Scientists study meteorites (which are old space rocks), observe other young stars surrounded by disks, and use computer models to simulate how gravity and motion would shape a forming solar system.

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Question 10: Why does Earth have water if it formed near the hot center?

→ Water probably came later — delivered by icy comets and asteroids from the outer solar system that crashed into early Earth.

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Final Answer:
1. Main idea: Solar system formed from collapsing gas/dust cloud → Sun + planets via gravity, spinning, clumping.
2. Cause of collapse: Gravity, possibly triggered by shock wave from nearby star explosion.
3. Flattened into disk: Spinning during collapse caused flattening (like pizza dough).
4. Inner planets: Close to Sun, made of rock/metal.
5. Outer planets: Far from Sun, made of ice/gas/dust → gas giants.
6. Leftovers: Became asteroids, comets, dwarf planets; some hit planets.
7. Age: ~4.6 billion years ago.
8. All planets same time? False — Sun first, then inner, then outer.
9. Evidence: Meteorites, observing other star systems, computer simulations.
10. Earth’s water: Delivered later by comets/asteroids from outer solar system.