Asked by oooookkaaaayyy

Which is the first stage in the life cycle of a massive star?

nebula
nebula

red giant
red giant

white drawf
white drawf

black hole
Answered by oooookkaaaayyy
Select the correct answer from the list.(1 point)
As a star's size increases, its luminosity
. As a star's temperature
, its luminosity increases.


Answered by oooookkaaaayyy
As a star's temperature , its luminosity increases.


does it decrease or increase?
Answered by oooookkaaaayyy
Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?(1 point)
Responses

The Hertzsprung-Russell diagram plots stars according to their size and shape.
The Hertzsprung-Russell diagram plots stars according to their size and shape.

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.

Stars with the highest temperatures appear towards the right side of the Hertzsprung-Russell diagram.
Stars with the highest temperatures appear towards the right side 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.
Answered by oooookkaaaayyy
Which state of matter best describes the elements inside stars?(1 point)
Responses

solid
solid

gas
gas

plasma
plasma

liquid
Answered by oooookkaaaayyy
Which describe the study of spectroscopy? Select the two correct answers.(1 point)
Responses

the number of galaxies
the number of galaxies

interaction of light and atoms
interaction of light and atoms

emission and absorption of light
emission and absorption of light

reflection of light by Earth
Answered by oooookkaaaayyy
According to the diagram, where do all stars begin their evolution?

(1 point)
Responses

stellar nebula
stellar nebula

white dwarf
white dwarf

supernova
supernova

red giant
Answered by oooookkaaaayyy
In which spectral class does a white dwarf with a temperature of 10,000 K belong?

(1 point)
Responses

A
A

B
B

F
F

O
O
Answered by oooookkaaaayyy
Why are spectral lines useful in classifying stars?(1 point)
Responses

They show a star's location.
They show a star's location.

They show the composition of a star.
They show the composition of a star.

They show the layers that make up a star.
They show the layers that make up a star.

They indicate a star's age.
They indicate a star's age.
Answered by oooookkaaaayyy
The Sun, like 80 to 90 percent of stars, is in which stage of life?(1 point)
Responses

red giant
red giant

stellar formation
stellar formation

main sequence
main sequence

dying star
Answered by oooookkaaaayyy
Which of these is a heavy element in a star?(1 point)
Responses

helium
helium

carbon
carbon

lithium
lithium

hydrogen
Answered by oooookkaaaayyy
Which are examples of non-visible light?(1 point)
Responses

rainbows and X-rays
rainbows and X-rays

white light from the sun and microwaves
white light from the sun and microwaves

radio waves and ultraviolet light
radio waves and ultraviolet light

white light from a lightbulb and rainbows
white light from a lightbulb and rainbows
Answered by GPT 3.5
nebula
Answered by GPT 3.5
As a star's size increases, its luminosity increases.
Answered by GPT 3.5
As a star's temperature increases, its luminosity increases.
Answered by GPT 3.5
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
Answered by GPT 3.5
plasma
Answered by GPT 3.5
The correct answers are:
- Interaction of light and atoms
- Emission and absorption of light
Answered by GPT 3.5
According to the diagram, all stars begin their evolution at the stellar nebula stage.
Answered by GPT 3.5
A white dwarf with a temperature of 10,000 K belongs to the A spectral class.
Answered by GPT 3.5
Spectral lines are useful in classifying stars because they show the composition of a star.
Answered by GPT 3.5
The Sun, like 80 to 90 percent of stars, is in the main sequence stage of its life.
Answered by GPT 3.5
Carbon is a heavy element in a star.
Answered by GPT 3.5
Radio waves and ultraviolet light are examples of non-visible light.