Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?(1 point)
Responses
The Sun's high temperature places it to the far left of the Hertzsprung-Russell diagram.
The Sun's high temperature places it to the far left of the Hertzsprung-Russell diagram.
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
The Hertzsprung-Russell diagram plots stars according to their size and shape.
The Hertzsprung-Russell diagram plots stars according to their size and shape.
Stars with the highest temperatures appear towards the right side of the Hertzsprung-Russell diagram.
Which is the first stage in the life cycle of a massive star?(1 point)
Responses
black hole
black hole
red giant
red giant
nebula
nebula
white drawf
nebula
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
Which of these is a heavy element in a star?(1 point)
Responses
helium
helium
carbon
carbon
lithium
lithium
hydrogen
carbon
Which are examples of non-visible light?(1 point)
Responses
white light from a lightbulb and rainbows
radio waves and ultraviolet light
white light from the sun and microwaves
rainbows and X-rays
The correct statement that explains how the Hertzsprung-Russell diagram helps to compare stars is: "The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class."
To understand why this statement is correct, let's first explain what the Hertzsprung-Russell (H-R) diagram is. The H-R diagram is a graphical representation that plots stars based on their luminosity (brightness) and temperature.
By plotting stars on the H-R diagram, we can visually compare their properties and characteristics. The vertical axis of the diagram represents the luminosity of the stars, with the brightest stars at the top and the dimmest stars at the bottom. The horizontal axis represents the temperature of the stars, with the hottest stars on the left and the coolest stars on the right.
Different regions on the H-R diagram correspond to different types of stars. For example, stars in the upper-left corner of the diagram are hot and very bright, while stars in the lower-right corner are cool and less luminous.
The spectral class of a star, which is based on its temperature, is also associated with its position on the H-R diagram. For example, stars in the top left of the diagram are typically classified as O or B spectral types, while stars in the bottom right are commonly classified as M spectral type.
Therefore, the H-R diagram helps astronomers compare stars by providing a visual representation of their characteristics, such as their luminosity, temperature, and spectral class. It allows us to see patterns and relationships between different types of stars, helping us deepen our understanding of stellar evolution and the properties of stars.