Which state of matter best describes the elements inside stars?(1 point)

gas

plasma

liquid

solid

Which is the first stage in the life cycle of a massive star?(1 point)

white drawf

nebula

black hole

red giant

As a star's size increases, its luminosity #1(Blank). As a star's temperature #2(Blank) , its luminosity increases.
#1 decreases / increases
#2 decreases / increases

The Sun, like 80 to 90 percent of stars, is in which stage of life?(1 point)

dying star

red giant

stellar formation

main sequence

Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?(1 point)

The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.

Stars with the highest temperatures appear towards the right side of the Hertzsprung-Russell diagram.

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.

How do scientists learn about the age of the solar system and its planetary bodies? Select the two correct answers. (1 point)

using radiometric dating of meteorites

analyzing impact craters on planetary body surfaces

measuring distances between planets

comparing the composition of the gaseous planets to the rocky planets

Which describe the study of spectroscopy? Select the two correct answers.(1 point)

the number of galaxies

interaction of light and atoms

reflection of light by Earth

emission and absorption of light

Why are spectral lines useful in classifying stars?(1 point)

They show a star's location.

They show the composition of a star.

They indicate a star's age.

They show the layers that make up a star.

Which of these is a heavy element in a star?(1 point)

lithium

hydrogen

carbon

helium

Which are examples of non-visible light?(1 point)

radio waves and ultraviolet light

rainbows and X-rays

white light from a lightbulb and rainbows

white light from the sun and microwaves