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Question 1: The largest moon of Saturn is called?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Titan | Europa | Ganymede | Titan |
Summary:
Titan is the largest of Saturn’s moons, featuring a dense atmosphere and seas of liquid methane and ethane. It is even larger than the planet Mercury.
- Why not Europa? Europa is a moon of Jupiter, not Saturn, and is known for its potential subsurface ocean.
- Why not Ganymede? Ganymede is the largest moon of Jupiter and is the third-largest moon overall, not of Saturn.
Question 2: Which planet has the Great Red Spot?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Neptune | Jupiter | Uranus | Jupiter |
Summary:
The Great Red Spot is a massive storm on Jupiter, observed since ancient times and a major feature of the planet.
- Why not Neptune? Neptune has significant storms, but not the Great Red Spot; it has the Great Dark Spot.
- Why not Uranus? Uranus does not have a storm like the Great Red Spot and is known for its unique tilt and magnetic field.
Question 3: The first person to ever walk on the Moon was?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Yuri Gagarin | Neil Armstrong | Buzz Aldrin | Neil Armstrong |
Summary:
Neil Armstrong was the first human to walk on the Moon during the Apollo 11 mission on July 20, 1969.
- Why not Yuri Gagarin? Yuri Gagarin was the first human in space, not on the Moon.
- Why not Buzz Aldrin? Buzz Aldrin was the second person to walk on the Moon; Neil Armstrong was first.
Question 4: What is the name of the first man-made satellite?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Sputnik 1 | Luna 2 | Vostok 1 | Sputnik 1 |
Summary:
Sputnik 1 was the first artificial Earth satellite, launched by the Soviet Union on October 4, 1957.
- Why not Luna 2? Luna 2 was the first spacecraft to reach the Moon, not the first artificial satellite.
- Why not Vostok 1? Vostok 1 was a spacecraft carrying Yuri Gagarin into space, not a satellite.
Question 5: Which planet is also inclined?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Mars | Uranus | Neptune | Uranus |
Summary:
Uranus is characterized by its extreme axial tilt of approximately 98 degrees, causing its poles to point nearly directly at the Sun.
- Why not Mars? Mars has an axial tilt of about 25 degrees, which is much less extreme than that of Uranus.
- Why not Neptune? Neptune’s axial tilt is about 28 degrees, which is less extreme than Uranus.
Question 6: What is the main component of the Sun?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Hydrogen | Helium | Oxygen | Hydrogen |
Summary:
Hydrogen makes up about 75% of the Sun’s mass, with nuclear fusion of hydrogen into helium providing the Sun’s energy.
- Why not Helium? Helium is the second-most abundant element in the Sun but does not make up the majority.
- Why not Oxygen? Oxygen is present in trace amounts compared to hydrogen and helium.
Question 7: What was the first mission to land a man on the lunar surface?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Challenger | Apollo 8 | Yuri Gagarin | Apollo 11 |
Summary:
Apollo 11 was the mission that first landed humans on the Moon, with Neil Armstrong and Buzz Aldrin walking on the lunar surface on July 20, 1969.
- Why not Apollo 13? Apollo 13 encountered a critical problem and had to return to Earth without landing on the Moon.
- Why not Gemini 8? Gemini 8 involved docking maneuvers but did not land on the Moon.
Question 8: Which phenomenon causes a star to explode at the end of its life cycle?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Nova | Supernova | Quasar | Supernova |
Summary:
A supernova is an explosion of a star at the end of its life cycle, resulting in a dramatic increase in brightness.
- Why not Nova? A nova is a temporary brightening of a star and is not as explosive as a supernova.
- Why not Quasar? A quasar is an extremely bright and distant active galactic nucleus, not a star explosion.
Question 9: What do you call a stony celestial body smaller than a planet orbiting the Sun?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Comet | Asteroid | Meteoroid | Asteroid |
Summary:
An asteroid is a rocky object smaller than a planet that orbits the Sun. Most asteroids are found in the asteroid belt between Mars and Jupiter.
- Why not Comet? A comet is an icy body with a tail that forms when it approaches the Sun, unlike an asteroid.
- Why not Meteoroid? Meteoroids are smaller fragments of asteroids or comets.
Question 10: Which planet is known for having a day longer than its year?
| Option A | Option B | Option C | Answer |
|---|---|---|---|
| Venus | Mercury | Mars | Venus |
Summary:
Venus has a rotation period (day) longer than its orbital period (year). A day on Venus lasts about 243 Earth days, while a year on Venus lasts about 225 Earth days.
- Why not Mercury? Mercury’s day is shorter than its year.
- Why not Mars? Mars has a day slightly longer than an Earth day, but its year is longer than its day.
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