Earth Space Science Chapter 25 Review

What is the correct order of colors for stars on the H-R diagram from coolest to hottest?

• blue, white, yellow, orange, red

• red, orange, yellow, white, blue

• orange, blue, white, yellow red

• white, yellow, blue, red, orange

Binary star systems help determine which property of a star?

• brightness

• distance

• mass

• temperature

Which star property is parallax used to measure?

• mass

• distance

• brightness

• temperature

Temperature of a star is related to its

• mass.

• color.

• brightness.

• distance.

The closest star to Earth is

• Proxima Centauri.

• Polaris.

• the sun.

• Betelgeuse.

There are how many constellations?

• 150

• 32

• 77

• 88

How long is a light-year?

• 150 million km

• 1 AU

• 9.5 trillion km

• 50 billion km

The measure of a star’s brightness is its

• parallax.

• magnitude.

• temperature.

• light-year.

Which magnitude of a star is brighter?

• +8

• 0

• -0.5

• -7

Deneb has an apparent magnitude of 1.3 and an absolute magnitude of -6.9. Which of the following is true?

• Deneb is farther away than 32.6 light-years from Earth.

• Deneb is closer than 32.6 light-years from Earth.

• Deneb is not a very bright star.

• Deneb appears brighter than the sun.