SciOly RFTS Quiz

What is the primary mechanism for star formation in molecular clouds?

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What is the relationship between a star's mass and its luminosity?

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How do astronomers classify stars based on their spectra?

• By their luminosity class

• By their temperature

• By their mass

• By their size

Which of the following is an example of an observatory that observes in the radio wavelength?

• Hubble Space Telescope

• Chandra X-ray Observatory

• James Webb Space Telescope

• Very Large Array

What is the process by which a star like the Sun will eventually end its life?

• Supernova explosion

• Planetary nebula formation

• Black hole formation

• White dwarf cooling

What is the significance of the main sequence on the Hertzsprung-Russell diagram?

• It represents the phase of stellar evolution when stars are fusing hydrogen in their cores

• It shows the relationship between a star's temperature and its luminosity

• It marks the boundary between stars that will become white dwarfs and those that will become supernovae

• It indicates the point at which a star exhausts its nuclear fuel and leaves the main sequence

What is the primary mechanism by which a star like the Sun will eventually lose mass?

• Stellar winds

• Nuclear fusion

• Supernova explosion

• Gravitational collapse

What is the main sequence on the Hertzsprung-Russell diagram?

• A diagonal line

• A horizontal line

• A vertical line

• A curved line

What is the primary reason for the variability in the luminosity of T Tauri stars?

• Pulsations in the star's outer layers

• Changes in the star's magnetic field

• Variations in the accretion rate of material onto the star

• Stellar winds blowing material away from the star

Which telescope is known for its ability to observe in X-ray wavelengths?

• Hubble Space Telescope

• James Webb Space Telescope

• Chandra X-ray Observatory

• Very Large Array