Podcast
Questions and Answers
What is the main factor governing the motion of all members of the solar system?
What is the main factor governing the motion of all members of the solar system?
- Gravitational force of the planets
- Magnetic force of the planets
- Gravitational force of the sun (correct)
- Magnetic force of the sun
Which heavenly body accounts for almost 99.9 percent of the matter in the whole solar system?
Which heavenly body accounts for almost 99.9 percent of the matter in the whole solar system?
- Sun (correct)
- Comets
- Asteroids
- Meteors
How old is the solar system?
How old is the solar system?
- 5 billion years (correct)
- 10 billion years
- 2 billion years
- 15 billion years
What is the sun mainly composed of?
What is the sun mainly composed of?
What is the approximate distance from the earth to the sun?
What is the approximate distance from the earth to the sun?
What is the main source of energy for the Earth?
What is the main source of energy for the Earth?
Why is the temperature at the centre of the sun significantly higher than at its surface?
Why is the temperature at the centre of the sun significantly higher than at its surface?
Why is the corona of the sun visible only during a total eclipse?
Why is the corona of the sun visible only during a total eclipse?
What is responsible for making the surface of the sun appear like a bright disc to us?
What is responsible for making the surface of the sun appear like a bright disc to us?
What forms the outer layer of the sun's atmosphere?
What forms the outer layer of the sun's atmosphere?
What is the main reason that planets appear big and do not twinkle at night?
What is the main reason that planets appear big and do not twinkle at night?
Which planet in our solar system lacks the criteria of 'clearing the neighborhood' around its orbit, leading it to be classified as a dwarf planet?
Which planet in our solar system lacks the criteria of 'clearing the neighborhood' around its orbit, leading it to be classified as a dwarf planet?
According to the IAU's definition, what characteristic must a celestial body have to be classified as a planet in our Solar System?
According to the IAU's definition, what characteristic must a celestial body have to be classified as a planet in our Solar System?
Among the 8 major planets in our solar system, which one is identified as the biggest planet?
Among the 8 major planets in our solar system, which one is identified as the biggest planet?
What is the primary source of a planet's brightness at night?
What is the primary source of a planet's brightness at night?
Which planet in our solar system is closest to the Sun?
Which planet in our solar system is closest to the Sun?
What is the defining characteristic that distinguishes a planet from a dwarf planet according to the IAU's definition?
What is the defining characteristic that distinguishes a planet from a dwarf planet according to the IAU's definition?
What factor determines whether a celestial body in our Solar System will be classified as a planet or a dwarf planet?
What factor determines whether a celestial body in our Solar System will be classified as a planet or a dwarf planet?
