Astronomy and Space Science Mcqs Page 6

Astronomy and Space Science Mcqs

101- The most abundant element in the universe is:

A. Hydrogen

B. Helium

C. Oxygen

D. Carbon

View Answer

Answer : A. Hydrogen

Description

102- The Hubble Space Telescope was launched in:

A. 1975

B. 1985

C. 1990

D. 2000

View Answer

Answer : C. 1990

Description

103- The Sun’s core is mainly composed of:

A. Hydrogen

B. Iron

C. Helium and oxygen

D. Carbon and nitrogen

View Answer

Answer : A. Hydrogen

Description

104- Which planet has a dense atmosphere of mostly carbon dioxide?

A. Venus

B. Mars

C. Mercury

D. Jupiter

View Answer

Answer : A. Venus

Description

105- The brightness of a star as seen from Earth is called:

A. Flux

B. Luminosity

C. Absolute magnitude

D. Apparent magnitude

View Answer

Answer : D. Apparent magnitude

Description

106- The Moon is gradually moving away from Earth at about:

A. 1 cm/year

B. 3.8 cm/year

C. 10 cm/year

D. 5 mm/year

View Answer

Answer : B. 3.8 cm/year

Description

107- The first artificial object to impact the Moon was:

A. Luna 2

B. Apollo 11

C. Voyager 1

D. Sputnik 1

View Answer

Answer : A. Luna 2

Description

108- Which planet has the largest number of moons discovered so far?

A. Jupiter

B. Saturn

C. Uranus

D. Neptune

View Answer

Answer : A. Jupiter

Description

109- The Oort Cloud is believed to be located at a distance of:

A. 10–50 AU

B. 2–5 AU

C. 2,000–5,000 AU

D. 100–500 AU

View Answer

Answer : C. 2,000–5,000 AU

Description

110- The Sun emits energy primarily in:

A. Radio waves

B. Visible light

C. Gamma rays only

D. X-rays only

View Answer

Answer : B. Visible light

Description

111- A pulsar is:

A. A black hole

B. A star in formation

C. A type of comet

D. A rapidly rotating neutron star

View Answer

Answer : D. A rapidly rotating neutron star

Description

112- The Kuiper Belt mainly contains:

A. Rocky planets

B. Icy bodies and dwarf planets

C. Moons of Jupiter

D. Gas giants

View Answer

Answer : B. Icy bodies and dwarf planets

Description

113- Which planet has retrograde rotation and spins opposite to most planets?

A. Mars

B. Uranus

C. Venus

D. Mercury

View Answer

Answer : C. Venus

Description

114- The largest volcano in the Solar System is:

A. Mauna Loa

B. Olympus Mons

C. Vesuvius

D. Mount Everest

View Answer

Answer : B. Olympus Mons

Description

115- A solar eclipse occurs when:

A. Moon passes behind Earth

B. Sun passes behind Moon

C. Earth passes between Sun and Moon

D. Moon passes between Sun and Earth

View Answer

Answer : D. Moon passes between Sun and Earth

Description

116- A lunar eclipse occurs when:

A. Moon passes behind Earth

B. Sun passes behind Moon

C. Moon passes between Sun and Earth

D. Earth passes between Sun and Moon

View Answer

Answer : D. Earth passes between Sun and Moon

Description

117- The study of galaxies and their evolution is called:

A. Galactic astronomy

B. Cosmology

C. Exoplanetology

D. Stellar astronomy

View Answer

Answer : A. Galactic astronomy

Description

118- The closest galaxy to the Milky Way is:

A. Andromeda Galaxy

B. Triangulum Galaxy

C. Whirlpool Galaxy

D. Messier 87

View Answer

Answer : A. Andromeda Galaxy

Description

119- The first spacecraft to land on Mars was:

A. Sputnik 1

B. Luna 2

C. Viking 1

D. Apollo 11

View Answer

Answer : C. Viking 1

Description

120- Which planet has the shortest day?

A. Saturn

B. Jupiter

C. Earth

D. Mars

View Answer

Answer : B. Jupiter

Description