Question 1

What is the primary component of the Sun, making up approximately 74% of its mass?

Accepted Answer

Hydrogen

Question 2

Which planet in our solar system is known for its prominent rings, composed mainly of ice particles and dust?

Accepted Answer

Saturn

Question 3

What phenomenon causes the Earth's magnetic field, protecting us from harmful solar wind?

Accepted Answer

The movement of molten iron in the outer core

Question 4

The Great Red Spot on Jupiter is a persistent storm that has been observed for centuries. What gas is believed to be responsible for its distinct red color?

Accepted Answer

Sulfur compounds

Question 5

Which of the following is the closest star to Earth, besides our Sun?

Accepted Answer

Proxima Centauri

Question 6

What is the term for a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it?

Accepted Answer

Black hole

Question 7

Which terrestrial planet has the highest average surface temperature in our solar system?

Accepted Answer

Venus

Question 8

The process by which stars generate energy is called nuclear fusion. What element is primarily fused into helium during this process in stars like our Sun?

Accepted Answer

Hydrogen

Question 9

What celestial bodies are remnants of stars that have exhausted their nuclear fuel and collapsed, often resulting in a dense core?

Accepted Answer

White dwarfs

Question 10

Which planet is tilted on its side at an axial tilt of approximately 98 degrees, causing extreme seasonal variations?

Accepted Answer

Uranus

Question 11

What is the name of the galaxy that contains our solar system?

Accepted Answer

Milky Way Galaxy

Question 12

The distance light travels in one year is known as a light-year. What is the approximate speed of light in a vacuum?

Accepted Answer

300,000 kilometers per second

Question 13

What is the name given to a celestial body consisting of a nucleus of ice and dust and, when near the Sun, a ‘tail’ of gas and dust particles pointing away from the Sun?

Accepted Answer

Comet

Question 14

Which layer of the Sun's atmosphere is the outermost layer, visible during a solar eclipse as a faint halo?

Accepted Answer

Corona

Question 15

The expansion of the universe is evidenced by the redshift of light from distant galaxies. What does redshift indicate?

Accepted Answer

Galaxies are moving away from us

Cosmic Facts: A Physical Science Quiz

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