Chapter 29 and 30

Which correctly lists objects in order of decreasing mass? 

• Solar System, Sun, Jupiter, Earth
• Sun, Solar System, Jupiter, Earth
• Solar System, Jupiter, Sun, Earth
• Solar System, Jupiter, Earth, Sun

Which planet has composition and density most similar to the Sun?

• Venus
• Mars
• Mercury 
• Saturn

A scientist comparing the properties of a large number of different stars could expect to find the most variation in the data describing the stars’________. 

• temperature
• diameter
• composition 
• luminosity

Most of the light emitted by the Sun comes from the ____. 

• prominence
• corona
• photosphere
• chromosphere

When the polarity of the Sun's magnetic field is taken into account, the solar activity cycle lasts ____. 

• 11.4 years
• 22.2 years 
• 11.2 years
• 22.4 years

What causes the dark bands observed in a solar spectrum? 

• continuous spectrum
• highly compressed, glowing gas d. warmer gas in front of a source that emits
• different chemical elements which absorb light at specific wavelengths
•  the emission of specific elements

The apparent shift in a star’s position caused by the motion of the observer is called ____.

• parallax
• apparent magnitude
• absolute magnitude
• luminosity

A star that is gravitationally bound to another star can either be part of a star cluster or a ____ star. 

• red giant
• white dwarf
• binary
• constellation

All stars, including the Sun, have the following identical composition: 

• 25 percent hydrogen; 73 percent helium; and 2 percent other
• 25 percent helium; 73 percent hydrogen; and 2 percent oxygen
• 25 percent helium; 73 percent hydrogen; and 2 percent other
• 25 percent hydrogen; 73 percent helium; and 2 percent oxygen

The ____ of a star determines its temperature, luminosity, and diameter.

• density
• composition
• energy output
• mass