#1
Which property of a celestial body determines its color?
Temperature
Mass
Distance from Earth
Luminosity
#2
What does the term 'redshift' indicate in astronomy?
Increase in the wavelength of light emitted by a celestial body
Decrease in the wavelength of light emitted by a celestial body
Increase in the brightness of a celestial body
Decrease in the brightness of a celestial body
#3
What does the term 'emission spectrum' refer to in astronomy?
A spectrum formed by the absorption of specific wavelengths of light
A spectrum formed by the emission of specific wavelengths of light
A spectrum formed by the reflection of specific wavelengths of light
A spectrum formed by the transmission of specific wavelengths of light
#4
What is the primary characteristic used to classify stars into different spectral types?
Brightness
Temperature
Mass
Size
#5
What is the primary method astronomers use to measure the temperature of stars?
Stellar parallax
Stellar occultation
Stellar spectroscopy
Stellar photometry
#6
What does the term 'spectral lines' refer to in astronomy?
Lines formed due to gravitational pull
Lines formed due to collision of celestial bodies
Lines formed due to interference of light
Lines formed due to absorption or emission of specific wavelengths of light
#7
What is the primary factor affecting the width of spectral lines?
Temperature of the celestial body
Density of the celestial body
Chemical composition of the celestial body's atmosphere
Distance from Earth
#8
Which of the following spectral types corresponds to the hottest stars?
#9
Which type of celestial body emits the most intense radiation?
White dwarfs
Red giants
Black holes
Main sequence stars
#10
What characteristic of a celestial body's spectrum helps astronomers determine its radial velocity?
Width of absorption lines
Intensity of spectral lines
Shift of spectral lines
Presence of emission lines
#11
Which celestial phenomenon is associated with the formation of absorption lines in a spectrum?
Emission
Reflection
Absorption
Transmission
#12
What is the primary factor that determines the width of absorption lines in a celestial body's spectrum?
Temperature
Pressure
Gravity
Velocity
#13
What is the primary method astronomers use to determine the composition of celestial bodies?
Studying their gravitational effects
Analyzing their spectra
Measuring their apparent brightness
Detecting their magnetic fields
#14
What is the primary purpose of using spectroscopy in astronomy?
To study the motion of celestial bodies
To measure the distance to celestial bodies
To determine the composition and properties of celestial bodies
To study the gravitational interactions between celestial bodies
#15
Which type of celestial body emits a continuous spectrum?
Main sequence stars
Brown dwarfs
Planets
White dwarfs
#16
What is the primary factor determining the color of a main sequence star?
Age
Distance
Temperature
Luminosity
#17
What is the primary reason astronomers observe celestial bodies across different wavelengths?
To study their surface topography
To determine their age
To understand their internal structure and composition
To measure their distance from Earth