The solar system is very interesting and there are many things to learn from trivia, quizzes, and facts about the universe. Here we have put together 50 interesting solar system multiple choice questions and answers. Want to test your knowledge of the solar system? Find out how much you know and learn interesting facts about our solar system quiz.
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What are the first four planets in our solar system? The solar system is made up of the sun, 3 planets, 3 planets, 3 satellites, comets, meteors, and asteroids, with the Solar System and its Planets for concretizing the learning of GK.
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Solar system with multiple choice questions and answers
Comets are leftovers of
We’re about 165 quadrillion miles away from the center supermassive
Which are all on the same “plane” and orbit in the same direction?
How many times is the Sun's diameter roughly of the Earth?
How much does the Sun hold the solar system's mass?
How mnay Earths could fit inside the sun?
Solis is Latin for sun. Sol is the Roman equivalent of the Greek sun god
Which doesn't have a “prebiotic chemistry” — chemistry that was a precursor to life — on the surface?
If we look at Earth, we can get a better sense about the universe of the range of
Ice is found in permanently shadowed craters in
The Moon moves around the Earth in an approximately circular orbit, going once around us in approximately
Which of the following planet doesn't have any moon?
Which is a great comet catcher?
Which planet has supersonic winds?
The sunlight is able to reach the Earth in around
Oort Cloud is a reservoir of
Which is a rotating yellow dwarf star whose powerful gravity causes numerous objects to revolve around it in nearly circular orbits including the planets, moons, comets, asteroids, meteoroids, dust and gas?
What is the fourth inner planets in our solar system apart from Mercury, Venus, Earth?
Most Asteroids Found Between orbiting the Sun between which planets, an area known as the asteroid belt (2.7 AU)
Venus (460 Celsius) is actually hotter than Mercury (427 Celsius) because of
Which is the hottest planet in the solar system?
Which is the only planet which doesn't have an atmosphere?
What is the coldest planet?
Earth's orbit is nearly circular that its distance from the sun only varies between ________, or around 2 per cent about the average
A 20-degree tilt of which orbit would bring the innermost part of Earth’s orbit closer to the sun than Venus
What is the fastest moving planet?
What is the slowest moving planet?
What is the longest orbit planet?
What is the shortest day and night planet?
What is the longest day and night planet?
Short period comets are created in the
How many Solar Systems are estimated in the Milky Way Galaxy?
How many planets orbiting distant stars have been found so far?
How many Scientists solar systems are now estimated in our own Milky Way galaxy, alone?
What is the quickest spinning planet?
What is the slowest spinning planet?
Which planet tilted on its side?
What is the largest moon in our solar system?
What id the most active moon in the solar system?
Which planet has the biggest volcano in the solar system?
Which planet has the longest valley in the solar system?
Water ice exists all over the solar system. Ice is a common component of comets and asteroids.
The Moon always shows Earth the same face.
The rise and fall of the tides on Earth is caused by the
What is the Valles Marineris?
Our moon is the ____ in the Solar System.
The average distance from the Moon to the Earth is 384403 kilometres (238857 miles).
Earth is Expanding
Which planet is still shrinking?
Spacecraft have visited every planet — Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune — as well as two dwarf planets, Pluto and Ceres.
Interesting Solar System and Planets Facts
The solar system is made up of the Sun, which is an average star in the Milky Way Galaxy, and the bodies that orbit it: 8 (formerly 9) planets with about 210 known planetary satellites (moons); countless asteroids, some with their own satellites; comets and other icy bodies; and vast reaches of highly tenuous gas and dust known as the interplanetary medium.
Ancient astronomers could see the Sun, Moon, and brightest planets with their naked eyes, and their observations and calculations of their movements gave origin to the discipline of astronomy.
The amount of data on the movements, characteristics, and compositions of planets and smaller entities has exploded in recent years, and the range of observational sensors has expanded well beyond the solar system to include neighboring galaxies and the known universe’s edge.
Nonetheless, the solar system and its immediate outer border remain the physical limit of human reach, as well as the foundation of our theoretical knowledge of the cosmos.
Data on planets, moons, asteroids, and other bodies have been collected by Earth-launched space probes and landers, and this data has been combined with measurements taken with telescopes and other instruments below and above the Earth’s atmosphere, as well as information extracted from meteorites and Moon rocks returned by astronauts.
All of this data is studied in an attempt to fully comprehend the solar system’s origins and evolution—a goal that astronomers continue to make significant progress toward.
The solar system’s composition
The Sun, which holds more than 99 percent of the mass of the solar system and influences the motion of all other things by its gravitational attraction, is at the center of the solar system. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are the planets in order of their distance from the Sun.
All save Mercury and Venus have ring systems, and all but Jupiter and Neptune have one or more moons. Pluto has been formally classified as a planet since it was found orbiting beyond Neptune in 1930, but in 1992, an ice object circling even farther from the Sun than Pluto was discovered.
Many more were discovered after then, including Eris, an object that looks to be at least as huge as Pluto. Pluto was quickly revealed to be only one among the bigger members of this new collection of objects known as the Kuiper belt.
As a result, the International Celestial Union (IAU), the body tasked by the scientific community with identifying astronomical objects, agreed in August 2006 to withdraw Pluto’s planetary status and designate it as a dwarf planet.
In the Milky Way Galaxy, there are 100 billion solar systems. The solar system, together with the Sun and stars, was formerly thought to symbolize the whole universe, and the planets were thought to be ‘wandering stars’ orbiting the Earth. The Earth was eventually added to the list of planets once the scientific revolution began in 1543, but astronomers still only knew of one solar system in the cosmos until recently. Over 4,000 planets circling distant stars have been discovered in the last 17 years or so, and astronomers now estimate that there might be as many as 100 billion solar systems in our Milky Way galaxy alone.
A tiny body is any natural solar system object that is not the Sun, a planet, a dwarf planet, or a moon; asteroids, meteoroids, and comets are examples. The asteroid belt is a roughly flat ring that orbits between Mars and Jupiter, containing the majority of the several hundred thousand asteroids or minor planets.
To distinguish them from the bigger asteroidal items, meteoroids are asteroidal fragments and other tiny particles of solid matter (less than a few tens of meters wide) that inhabit interplanetary space.
The solar system’s billions of comets are mostly located in two different reservoirs. The most distant one, known as the Oort cloud, is a spherical shell that surrounds the solar system at a distance of around 50,000 astronomical units (AU)—more than 1,000 times Pluto’s orbital distance.
The Kuiper belt, the other reservoir, is a broad disk-shaped zone with a primary concentration of 30–50 AU from the Sun, beyond Neptune’s orbit but encompassing a portion of Pluto’s orbit. (An astronomical unit is an average distance between the Earth and the Sun, which is approximately 150 million kilometers [93 million miles].)
Pluto, its moon Charon, Eris, and the numerous other Kuiper belt objects might be thought of as surviving representations of the frozen bodies that accreted to form the cores of Neptune and Uranus, much as asteroids can be thought of as rocky debris leftover from the creation of the inner planets.
As a result, Pluto and Charon might be regarded big comet nuclei. The Centaur objects, a group of comet nuclei with sizes of up to 200 kilometers (125 miles), orbit the Sun between Jupiter and Neptune, most likely due to gravitational perturbation from the Kuiper belt.
The interplanetary medium, which consists of an extremely thin plasma (ionized gas) studded with dust particle concentrations, stretches outward from the Sun to roughly 123 AU.
All of the planets and dwarf planets in the Kuiper belt, as well as stony asteroids and ice bodies, circle the Sun in elliptical orbits in the same direction that the Sun spins. Prograde, or direct, motion is the name given to this type of movement.
An observer looking down on the system from a vantage point above Earth’s the North Pole would see that all of the orbital movements are counterclockwise. The comet nuclei in the Oort cloud, on the other hand, have random orbits that correspond to their spherical dispersion along the plane of the planets.
The eccentricity of an object’s orbit determines the shape of its orbit. The eccentricity of a completely circular orbit is 0; as the orbit’s form elongates, the eccentricity grows toward a value of 1, the eccentricity of a parabola. Venus and Neptune, with eccentricities of 0.007 and 0.009, respectively, have the most circular orbits around the Sun among the eight main planets.
With an eccentricity of 0.21, Mercury is the nearest planet; Pluto, with an eccentricity of 0.25, is even more so. The inclination of an object’s orbit around the Sun, which is the angle it makes with the plane of Earth’s orbit—the ecliptic plane—is another distinguishing feature.
Mercury’s orbit has the largest inclination of all the planets, at 7° to the ecliptic; Pluto’s orbit, on the other hand, is far more steeply inclined, at 17.1°.
Small bodies’ orbits tend to have larger eccentricities and inclinations than planets’. Because certain comets from the Oort cloud have inclinations larger than 90 degrees, their path around the Sun is retrograde, or the reverse of the Sun’s spin.
The Solar System has been around for 4.6 billion years. Our Sun, a spinning yellow dwarf star whose enormous gravity forces countless things to rotate around it in roughly circular orbits, including planets, moons, comets, asteroids, meteoroids, dust, and gas, is 4.6 billion years old and contains 99.86 percent of the mass of the solar system.
It takes around 8 minutes for sunlight to reach Earth. The Earth is 93 million miles (150 million kilometers) from the Sun, which scientists refer to as an astronomical unit (AU). Sunlight can travel at the speed of light (186,282 miles per second) and cover this immense distance in roughly 8 minutes and 20 seconds.
Proxima Centauri is the closest star to Earth. Outside of our solar system, Proxima Centauri (4.24 light-years) is the closest star to Earth, followed by Barnard’s Star in the constellation of Ophiuchus (6 light-years). Sirius (-1.46 magnitude) in the constellation Canis Major, the brightest star in the night sky, is the 5th nearest star to Earth, at a distance of 8.6 light-years.
Each planet has a different year. The planet’s yearly orbit around our star gets faster the closer it is to the Sun. Mercury, for example, would complete its orbit in 88 days, while far Neptune would take 165 years to complete its yearly journey around the Sun, whereas the Earth takes a year to circle around the Sun.
The majority of asteroids are discovered between Mars and Jupiter. Asteroids are generally rocky or metallic in composition, and the majority of them can be found in our solar system circling the Sun between Mars and Jupiter in a region known as the asteroid belt (2.7 AU). This area is thought to have previously had enough material to create a planet during the early history of the solar system, but Jupiter’s tremendous gravity prevented the components from forming into a planet.
2 Light-years across the Solar System The extent of a solar system is governed by how far its sun’s gravity outweighs the gravitational pull of other objects in the neighborhood, which in the case of the Sun extends to the Oort Cloud, a cometary material repository between 5,000 and 50,000 AU distant. The solar system would have a diameter of roughly 2 light-years if that threshold were to be reached.
Comets that we see come from our own solar system. Comets that we see in the night sky are either short-period comets that originate in the Kuiper belt (30 to 50 AU) or longer-period comets that originate in the Oort cloud. Comets are formed of ice and dust, and as they got closer to the Sun, their surfaces warm up, forcing their constituents to evaporate, resulting in the comet’s distinctive tail. Numerous meteoroids are shed and spread out throughout the comet’s orbit, resulting in meteor showers such as the Geminids and Leonids whenever the Earth’s atmosphere passes over this dust trail.
Planets are composed of either rock or gas. The inner planets of Mercury, Venus, Earth, and Mars, which are primarily comprised of rock and metal, are divided from the outer planets of Jupiter, Saturn, Uranus, and Neptune, which are primarily made of hydrogen, helium, and other gases. Despite their moniker as gas giants, their gases are compressed into liquid metal or rock by high heat and pressure as they approach their cores.
The planet becomes hotter as it gets closer to the sun. The closer a planet is to the Sun, the hotter its average temperature becomes. Mercury’s average temperature is a scorching +427 degrees Celsius, while Neptune’s average temperature is a chilling -200 degrees Celsius. Venus, on the other hand, is actually hotter than Mercury (460°C) due to its dense carbon dioxide atmosphere, which provides a greenhouse effect, whereas Mercury has a relatively thin atmosphere and hence cannot readily trap the Sun’s heat.
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