earth science 25.

Question 1

are stars in contellations actually close to each other

Answer 1

no they just seem that way from our point of view.

Question 2

how many constellations are there

Answer 2

88

Question 3

what is important about the big and little dipper.

Answer 3

the big dipper points to polaris

Question 4

what is polaris

Answer 4

it is directly in the north so if your lost you can just look for it

Question 5

why does it look like the stars are moving around in the sky

Answer 5

earths rotation makes it look like that

Question 6

how long does it take the sun to get to the other side of the earth

Answer 6

6 months

Question 7

How much would we see stars that are near the equator

Answer 7

only sometimes

Question 7

what are the stars called that we can see them all the time

Answer 7

circumpolar

Question 8

what is the equivalent of lines of latitude on those globes

Answer 8

declination

Question 8

how many times would we see stars in the south

Answer 8

never

Question 9

why are their 24 numbers going around the globe

Answer 9

becuase it takes the earth 24 hours to rotate

Question 10

what are the vertical lines on that globe

Answer 10

right ascensions

Question 11

what are the differneces between stars that we can see

Answer 11

their size color and temperature,and elements that make them up.

Question 12

name the color of stars from hot to hottest

Answer 12

red yellow then blue the hottest

Question 13

what are binary stars

Answer 13

when two stars rotate around each other

Question 14

what is the name of a triple star

Answer 14

proxima centuri

Question 15

what does mass say about the wobble of binary stars

Answer 15

the more mass one has than the other star the more wobble it has, But if the stars are equal mass there is less wobble.

Question 16

what is an eclipsing binary star

Answer 16

when one star is bright the other is relatively dim. When they are matched there is less light but when they are side by side there is more.

Question 17

what is parallax

Answer 17

it is the apparent shift in position when you look at something one angle to another.

Question 18

what do we do to notice a stars shift in positon

Answer 18

we wait half a year later because we moved by a lot

Question 19

what unit do we use to measure distantce for stars

Answer 19

light years

Question 20

how far is proxima centuri form us

Answer 20

4.2 light years away

Question 21

how do we determine the differnece in brightnes for stars

Answer 21

apparent and absolute

Question 22

what do we call it when a star has a certain amount of brightness

Answer 22

absolute brightness

Question 23

what makes the light in a star

Answer 23

the photosphere

Question 24

what is apparent brightness

Answer 24

when the star is far away so it looks dimmer than it actually is

Question 25

is brightness a negative or positive number? which is brighter negative or positive

Answer 25

a negative. the more negative a star is the brighter it is.

Question 26

what distance to scientists use to measure absolute magnatude

Answer 26

32.6 light years

Question 27

the hotter a star is what changes

Answer 27

it gets bigger and the hotter changes to blue and brighter

Question 28

what is the verse we used in class to talk about God creating less light and greater ones

Answer 28

Genisis 1:16

Question 29

what is a nebula

Answer 29

all the gas and dust in space

Question 30

what would happen if a shockwave hit a nebula? what would form

Answer 30

they would start contracting and pulling together. a protostar after more gravity is gathered.

Question 31

what is one of the nebulas we can see with the naked eye

Answer 31

orion nebula

Question 32

what keeps stuff from going out and collapsing when a star is formed

Answer 32

gravity, and gas pressure from nuclear fusion

Question 33

what is a main sequence star

Answer 33

has balance of gravity and gas pressure thanks to nuclear fusion

Question 34

what fuel is being used up when a star cant go on anymore. explain the sequence.

Answer 34

hydrogen. It keeps on expanding becoming a red giant and if it expands a lot if become s super giant. then it becomes cooler. and maybe even it explodes

Question 35

low mas stars sequence

Answer 35

nebula, protostar, main sequence star, white dwarf, and black dwarf

Question 36

medium mass stars sequence

Answer 36

after main sequence star, red giant, planetary nebula, white dwarf, and black dwarf

Question 37

massive stars sequence

Answer 37

after main sequence star, red supergiant, supernova explosion, neutron star or black hole

Question 38

what makes a massive star black hole or neutron star

Answer 38

if it's extremely big its black and if it's somewhat big it's a neutron star.

Question 39

what does a neutron star shoot out

Answer 39

radio waves

Question 40

what are pulsars

Answer 40

neutrons stars the radiate radio waves

Question 41

why cant you see a black hole

Answer 41

because nothing can escape the gravity

Question 42

what galaxy are we in

Answer 42

milky way and barred spiral

Question 43

where are we located

Answer 43

2/3 of the way out in the mm galaxy

Question 44

how big is the mm galaxy

Answer 44

100,000 light years across, and 10,000 for width

Question 45

do you elliptical have old or young star

Answer 45

young with difromed one

Question 46

what is a cluster

Answer 46

a group of galaxies

Question 47

what is a really big group of galaxies

Answer 47

supercluster

Question 48

what is an even bigger group of galaxies

Answer 48

filaments