Welcome to the Comets MCQs with Answers. In this post, we are sharing Comets Multiple Choice Questions and Answers in Astronomy section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Comets online MCQs Test.
A comet’s nucleus is primarily made of what material?
a) Rock
b) Gas
c) Ice and dust
d) Metal
What is the glowing cloud of gas and dust that surrounds a comet’s nucleus called?
a) Coma
b) Tail
c) Core
d) Halo
What causes a comet’s tail to always point away from the Sun?
a) Gravitational pull
b) Solar wind
c) Magnetic fields
d) Rotation of the comet
What is the term for the path a comet follows around the Sun?
a) Orbit
b) Trajectory
c) Axis
d) Ellipse
What is the term used for comets that take less than 200 years to orbit the Sun?
a) Long-period comets
b) Short-period comets
c) Irregular comets
d) Elliptical comets
Which part of a comet can extend millions of kilometers in space?
a) Nucleus
b) Tail
c) Coma
d) Core
Where do most long-period comets originate from?
a) Kuiper Belt
b) Asteroid Belt
c) Oort Cloud
d) Solar system’s inner region
Halley’s Comet is an example of what type of comet?
a) Long-period comet
b) Short-period comet
c) Irregular comet
d) Hyperbolic comet
Which part of a comet is solid and located at its center?
a) Tail
b) Coma
c) Nucleus
d) Corona
The tail of a comet always points in which direction relative to the Sun?
a) Toward the Sun
b) Away from the Sun
c) Toward Earth
d) Perpendicular to the Sun
Which famous astronomer predicted the return of a comet that was later named after him?
a) Galileo Galilei
b) Edmond Halley
c) Johannes Kepler
d) Isaac Newton
When is a comet most visible from Earth?
a) When it is farthest from the Sun
b) When it is closest to the Sun
c) When it is closest to Earth
d) During an eclipse
Which of the following is NOT a component of a comet?
a) Coma
b) Nucleus
c) Tail
d) Mantle
What happens to a comet as it approaches the Sun?
a) It disintegrates
b) Its tail forms and grows
c) It stops moving
d) Its core becomes visible
What do scientists believe comets may have delivered to early Earth?
a) Oxygen
b) Hydrogen
c) Water and organic compounds
d) Nitrogen
Which comet broke apart and collided with Jupiter in 1994?
a) Halley’s Comet
b) Hale-Bopp
c) Shoemaker-Levy 9
d) Swift-Tuttle
Which space probe was the first to land on a comet?
a) Voyager 2
b) New Horizons
c) Rosetta
d) Galileo
How often does Halley’s Comet return to the inner solar system?
a) Every 10 years
b) Every 76 years
c) Every 200 years
d) Every 1000 years
What is the name of the outermost region where most long-period comets originate?
a) Asteroid Belt
b) Kuiper Belt
c) Oort Cloud
d) Scattered Disc
Which part of a comet vaporizes when it gets close to the Sun?
a) Coma
b) Nucleus
c) Tail
d) Dust
What material is NOT typically found in a comet’s nucleus?
a) Metal
b) Ice
c) Rock
d) Gas
How do astronomers usually classify comets?
a) By their color
b) By their orbit
c) By their size
d) By their speed
Which comet was visible to the naked eye in 1997 and was one of the brightest comets in decades?
a) Halley’s Comet
b) Comet Encke
c) Comet Tempel 1
d) Comet Hale-Bopp
Which of the following describes the orbit of a typical comet?
a) Circular
b) Elliptical
c) Irregular
d) Parabolic
What happens to a comet each time it passes close to the Sun?
a) It grows larger
b) It slows down
c) It loses mass
d) It stops rotating
What is a comet’s ion tail primarily composed of?
a) Water vapor
b) Dust
c) Ionized gas
d) Metal particles
Which comet is predicted to return in 2061?
a) Swift-Tuttle
b) Encke
c) Halley’s Comet
d) Hale-Bopp
What distinguishes a comet’s dust tail from its ion tail?
a) The dust tail is brighter
b) The dust tail points toward the Sun
c) The dust tail is made of small solid particles
d) The dust tail is shorter
What kind of orbit do hyperbolic comets have?
a) Circular
b) Elliptical
c) Parabolic
d) Hyperbolic
What term refers to a comet that only passes through the solar system once?
a) Hyperbolic comet
b) Periodic comet
c) Temporary comet
d) Solar comet
What causes a comet’s coma to form?
a) The comet’s rotation
b) Gravitational forces
c) Heat from the Sun
d) Solar wind
Which comet takes around 133 years to orbit the Sun?
a) Comet Hale-Bopp
b) Comet Shoemaker-Levy 9
c) Comet Swift-Tuttle
d) Comet Halley
What is the primary difference between a comet and an asteroid?
a) Comets have tails
b) Comets are larger
c) Comets are made of metal
d) Comets orbit the Earth
Which comet is known for being the largest ever discovered?
a) Hale-Bopp
b) Bernardinelli-Bernstein
c) Shoemaker-Levy 9
d) Encke
How are comet tails typically aligned in space?
a) Always pointing toward Earth
b) Randomly directed
c) Pointing away from the Sun
d) Pointing toward the Sun
What is the primary factor that determines the length of a comet’s tail?
a) Comet’s size
b) Solar wind
c) Distance from the Sun
d) Rotation speed
What is the average speed of a comet as it orbits the Sun?
a) 2 km/s
b) 10 km/s
c) 40 km/s
d) 100 km/s
Which of the following is NOT a type of cometary tail?
a) Dust tail
b) Ion tail
c) Gas tail
d) Plasma tail
The Great Comet of 1811 was notable for having what feature?
a) Longest visible tail
b) Brightest coma
c) Largest nucleus
d) Fastest orbit
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