Astronomy Ultimate Astronomy 2

Question 1

Which planet has the fastest rotation period, completing a full day in under 10 hours?

Accepted Answer

Jupiter

Answer

Earth

Answer

Mars

Answer

Venus

Question 2

What term describes the point in a planet's orbit where it is closest to the Sun?

Accepted Answer

Perihelion

Answer

Aphelion

Answer

Perigee

Answer

Apogee

Question 3

Which type of galaxy is the Milky Way classified as?

Accepted Answer

Barred spiral

Answer

Elliptical

Answer

Irregular

Answer

Lenticular

Question 4

A light-year is a measure of what quantity?

Accepted Answer

Distance

Answer

Time

Answer

Brightness

Answer

Speed

Question 5

What causes the phases of the Moon as seen from Earth?

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 6

Which is the hottest planet in the Solar System despite not being closest to the Sun?

Accepted Answer

Venus

Answer

Mercury

Answer

Mars

Answer

Jupiter

Question 7

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

Accepted Answer

Event horizon

Answer

Photon sphere

Answer

Accretion disk

Answer

Singularity