Astronomy Basic Astronomy 3

Question 1

What is the name of the force that keeps planets in orbit around the Sun?

Accepted Answer

Gravity

Answer

Gravity provides the centripetal pull that holds planets in orbit.

Question 2

Which layer of the Sun do we see as its visible surface?

Accepted Answer

Photosphere

Answer

The photosphere is the visible surface layer of the Sun.

Question 3

A total solar eclipse occurs when the Moon is in which phase?

Accepted Answer

New moon

Answer

Only at new moon can the Moon pass directly between Earth and the Sun.

Question 4

Which planet rotates on its side with an axial tilt near 98 degrees?

Accepted Answer

Uranus

Answer

Uranus has an extreme axial tilt that makes it appear to roll along its orbit.

Question 5

What are the small rocky bodies orbiting mostly between Mars and Jupiter called?

Accepted Answer

Asteroids

Answer

The asteroid belt lies between the orbits of Mars and Jupiter.

Astronomy Practice Test