Astronomy Astronomy MCQ 2

Question 1

Which planet has the shortest orbital period around the Sun?

Accepted Answer

Mercury

Answer

Venus

Answer

Earth

Answer

Mars

Question 2

What is the name of the boundary around a black hole beyond which nothing can escape?

Accepted Answer

Event horizon

Answer

Photosphere

Answer

Chromosphere

Answer

Roche limit

Question 3

Which type of galaxy has a flattened disk with spiral arms?

Accepted Answer

Spiral

Answer

Elliptical

Answer

Irregular

Answer

Lenticular

Question 4

What causes the phases of the Moon?

Accepted Answer

The relative positions of the Sun, Earth, and Moon

Answer

Earth's shadow on the Moon

Answer

The Moon's changing distance

Answer

Clouds in Earth's atmosphere

Question 5

Which element is most abundant in the Sun?

Accepted Answer

Hydrogen

Answer

Helium

Answer

Oxygen

Answer

Carbon

Question 6

What unit is defined as the average distance from Earth to the Sun?

Accepted Answer

Astronomical unit

Answer

Light-year

Answer

Parsec

Answer

Angstrom

Question 7

Which planet is known for its prominent ring system?

Accepted Answer

Saturn

Answer

Jupiter

Answer

Uranus

Answer

Neptune