Stars

Question 1

Which statement describes absolute and apparent brightness?

Revolt · Accepted Answer

Absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer.

Question 2

Which star on this diagram is the most similar to the Sun in luminosity and temperature?

Revolt · Accepted Answer

Centauri A

Question 3

The distance between stars is measured in light-years rather than in miles or kilometers because the distance between stars .

Revolt · Accepted Answer

is very large

Question 4

What is the approximate temperature of the supergiant Betelgeuse?

Revolt · Accepted Answer

3000 K

Question 5

The of light is the rate at which light travels through empty space, or about 300,000 km per second.

Revolt · Accepted Answer

speed

Question 6

Why can’t astronomers take a picture from inside a black hole?

Revolt · Accepted Answer

Gravity is so strong that even light cannot escape a black hole.

Question 7

A light-year is a measurement of .

Revolt · Accepted Answer

distance

Stars Answers