The Sun's Life and Energy Quiz

What is the primary process that powers the sun and produces its energy?

• Nuclear fission

• Nuclear fusion

• Chemical combustion

• Radioactive decay

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Which element is most abundant in the sun’s core and is primarily involved in the fusion process?

• Helium

• Hydrogen

• Oxygen

• Carbon

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What type of energy is released from the sun and eventually reaches Earth?

• Sound energy

• Electrical energy

• Radiant energy

• Mechanical energy

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Which of the following best describes the sun’s current stage in its life cycle?

• White dwarf

• Main sequence star

• Red giant

• Neutron star

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What is the main product formed when hydrogen nuclei fuse in the sun’s core?

• Oxygen

• Helium

• Carbon

• Nitrogen

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Which statement correctly describes the role of nuclear fusion in the sun?

• It splits heavy elements into lighter ones, releasing energy.

• It combines light elements to form heavier ones, releasing energy.

• It burns fuel like a fire, producing heat.

• It absorbs energy from space and stores it.

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Why does energy produced in the sun’s core take thousands of years to reach the surface?

• The energy is absorbed by planets before reaching the surface.

• The energy bounces around inside the sun due to dense layers.

• The energy is lost in space before reaching the surface.

• The energy is blocked by the sun’s magnetic field.

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How does the process of nuclear fusion in the sun affect the amount of hydrogen in its core over time?

• The amount of hydrogen increases.

• The amount of hydrogen stays the same.

• The amount of hydrogen decreases.

• The amount of hydrogen fluctuates randomly.

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Which of the following best explains why the sun will eventually leave the main sequence stage?

• It will run out of helium to fuse.

• It will run out of hydrogen in its core.

• It will become too cold to sustain fusion.

• It will be hit by an asteroid.

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What evidence supports the idea that the sun’s energy comes from nuclear fusion?

• The sun’s surface is solid.

• The sun emits a constant stream of neutrinos.

• The sun’s light is reflected from other stars.

• The sun’s energy comes from burning gases.

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