Absolute and Apparent Magnitude

Front

What does the luminosity of a star describe?

Back

Brightness.

Front

Why does the Sun appear brighter than other stars?

Back

Because it is nearer to Earth.

Front

Order the stars from coolest to hottest: Blue, White, Yellow, Orange, Red.

Back

Red, Orange, Yellow, White, Blue.

Front

What factors determine the absolute brightness of a star?

Back

Size and temperature.

Front

What can cause a very bright star to seem dimmer?

Back

If it is further away.

Front

Define absolute magnitude.

Back

The measure of the intrinsic brightness of a star, as it would appear at a standard distance of 10 parsecs.

Front

Define apparent magnitude.

Back

The brightness of a star as seen from Earth, which can be affected by distance and interstellar material.

Front

What is the relationship between temperature and color in stars?

Back

Hotter stars emit blue light, while cooler stars emit red light.

Front

What is the significance of a star's distance in determining its brightness?

Back

The further away a star is, the dimmer it appears, regardless of its actual luminosity.

Front

What is the scale used to measure the brightness of stars?

Back

The magnitude scale.