Question

Galaxies are classed according to their
A. size
B.shape
C. color
D.number of planets

Answer 1

B. shape

Answer 2

thank you can u help me with some more?

Answer 3

Your welcome and yes.

Answer 4

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.

Answer 5

@JoeDeWise

Answer 6

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.

Answer 7

Are there any more?

Answer 8

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

Answer 9

@JoeDeWise

Answer 10

A unit used to measure distances in space is the Light year.

Answer 11

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

Answer 12

Is that a question?

Answer 13

Which of the following is not a form of radiation?
Radio waves
Sound waves
Microwaves
Gamma waves

Answer 14

this is sorry

Answer 15

Okay hang on.

Answer 16

ok

Answer 17

Sound waves.

Answer 18

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

Answer 19

Not A or D.

Answer 20

b?

Answer 21

no

Answer 22

C

Answer 23

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.

Answer 24

Not A, C, or D. so

Answer 25

b

Answer 26

Yes.

Answer 27

A graph used to study the stars is
a distance-time graph
a velocity-time graph
a wind velocity diagram
an HR diagram

Answer 28

1 more after this

Answer 29

Okay

Answer 30

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.

Answer 31

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

Answer 32

B. I think.