torii897
  • torii897
Galaxies are classed according to their A. size B.shape C. color D.number of planets
Biology
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
B. shape
torii897
  • torii897
thank you can u help me with some more?
anonymous
  • anonymous
Your welcome and yes.

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torii897
  • torii897
How is a star's emission spectrum used to study stars? A. A star's emission spectrum tells how hot a star is. B. A star's emission spectrum tells what atoms make up the star. C. A star's emission spectrum tells how far a star is from Earth. D. A star's emission spectrum tells the star's location in the sky.
torii897
  • torii897
@JoeDeWise
anonymous
  • anonymous
None of the statements are completely true but I'd go with B. A star's emission spectrum tells what atoms make up the star.
anonymous
  • anonymous
Are there any more?
torii897
  • torii897
A unit used to measure distances in space is the distance light can travel in one year distance from the Earth to the sun distance from the Earth to the moon distance sound can travel in one year
torii897
  • torii897
@JoeDeWise
anonymous
  • anonymous
A unit used to measure distances in space is the Light year.
torii897
  • torii897
A unit used to measure distances in space is the distance light can travel in one year distance from the Earth to the sun distance from the Earth to the moon distance sound can travel in one year
anonymous
  • anonymous
Is that a question?
torii897
  • torii897
Which of the following is not a form of radiation? Radio waves Sound waves Microwaves Gamma waves
torii897
  • torii897
this is sorry
anonymous
  • anonymous
Okay hang on.
torii897
  • torii897
ok
anonymous
  • anonymous
Sound waves.
torii897
  • torii897
All of the following statements about sunspots are true except.. sunspots are regions on the sun’s surface that are cooler than normal all sunspots spew large amounts of material into space sunspots can interfere with communication systems on Earth sunspots can be seen from Earth without a telescope
anonymous
  • anonymous
Not A or D.
torii897
  • torii897
b?
anonymous
  • anonymous
no
anonymous
  • anonymous
C
torii897
  • torii897
Which of the following statements is true? Galaxies contain a few stars and a lot of dust. Galaxies contain dust, planets, and billions of stars. Galaxies contain thousands of planets and a few hundred stars . Galaxies contain mostly gas and dust with one or two stars.
anonymous
  • anonymous
Not A, C, or D. so
torii897
  • torii897
b
anonymous
  • anonymous
Yes.
torii897
  • torii897
A graph used to study the stars is a distance-time graph a velocity-time graph a wind velocity diagram an HR diagram
torii897
  • torii897
1 more after this
anonymous
  • anonymous
Okay
anonymous
  • anonymous
Stars are far away and we can measure that distance by figuring out how long the light takes to reach us. So distance-time would seem right.
torii897
  • torii897
If a scientist is looking at the size, temperature, brightness, and composition of a star, he may be studying the star’s position in the galaxy classification number of planets distance from the Earth
anonymous
  • anonymous
B. I think.

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