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Comets MCQs with Answers

Comets MCQs

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

Answer
c) Ice and dust

What is the glowing cloud of gas and dust that surrounds a comet’s nucleus called?
a) Coma
b) Tail
c) Core
d) Halo

Answer
a) Coma

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

Answer
b) Solar wind

What is the term for the path a comet follows around the Sun?
a) Orbit
b) Trajectory
c) Axis
d) Ellipse

Answer
a) Orbit

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

Answer
b) Short-period comets

Which part of a comet can extend millions of kilometers in space?
a) Nucleus
b) Tail
c) Coma
d) Core

Answer
b) Tail

Where do most long-period comets originate from?
a) Kuiper Belt
b) Asteroid Belt
c) Oort Cloud
d) Solar system’s inner region

Answer
c) Oort Cloud

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

Answer
b) Short-period comet

Which part of a comet is solid and located at its center?
a) Tail
b) Coma
c) Nucleus
d) Corona

Answer
c) Nucleus

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

Answer
b) Away from 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

Answer
b) Edmond Halley

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

Answer
b) When it is closest to the Sun

Which of the following is NOT a component of a comet?
a) Coma
b) Nucleus
c) Tail
d) Mantle

Answer
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

Answer
b) Its tail forms and grows

What do scientists believe comets may have delivered to early Earth?
a) Oxygen
b) Hydrogen
c) Water and organic compounds
d) Nitrogen

Answer
c) Water and organic compounds

Which comet broke apart and collided with Jupiter in 1994?
a) Halley’s Comet
b) Hale-Bopp
c) Shoemaker-Levy 9
d) Swift-Tuttle

Answer
c) Shoemaker-Levy 9

Which space probe was the first to land on a comet?
a) Voyager 2
b) New Horizons
c) Rosetta
d) Galileo

Answer
c) Rosetta

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

Answer
b) Every 76 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

Answer
c) Oort Cloud

Which part of a comet vaporizes when it gets close to the Sun?
a) Coma
b) Nucleus
c) Tail
d) Dust

Answer
b) Nucleus

What material is NOT typically found in a comet’s nucleus?
a) Metal
b) Ice
c) Rock
d) Gas

Answer
a) Metal

How do astronomers usually classify comets?
a) By their color
b) By their orbit
c) By their size
d) By their speed

Answer
b) By their orbit

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

Answer
d) Comet Hale-Bopp

Which of the following describes the orbit of a typical comet?
a) Circular
b) Elliptical
c) Irregular
d) Parabolic

Answer
b) Elliptical

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

Answer
c) It loses mass

What is a comet’s ion tail primarily composed of?
a) Water vapor
b) Dust
c) Ionized gas
d) Metal particles

Answer
c) Ionized gas

Which comet is predicted to return in 2061?
a) Swift-Tuttle
b) Encke
c) Halley’s Comet
d) Hale-Bopp

Answer
c) Halley’s Comet

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

Answer
c) The dust tail is made of small solid particles

What kind of orbit do hyperbolic comets have?
a) Circular
b) Elliptical
c) Parabolic
d) Hyperbolic

Answer
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

Answer
a) Hyperbolic 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

Answer
c) Heat from the Sun

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

Answer
c) Comet Swift-Tuttle

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

Answer
a) Comets have tails

Which comet is known for being the largest ever discovered?
a) Hale-Bopp
b) Bernardinelli-Bernstein
c) Shoemaker-Levy 9
d) Encke

Answer
b) Bernardinelli-Bernstein

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

Answer
c) Pointing away from 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

Answer
b) Solar wind

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

Answer
c) 40 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

Answer
c) Gas 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

Answer
a) Longest visible tail

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