Astronomy part 2

Question 1

the north star

Answer 1

very important star for celestial navigation
if you are in the northern hemisphere and you are looking at the north star it means you are facing north
it is also called Polaris
helps you find where you are going

Question 2

photosphere

Answer 2

surface of the sun
very hot
causes gases that are opaque to become transparent
light and radiation escapes

Question 3

chromosphere

Answer 3

inner atmosphere 60 000 degrees hotter that the photosphere

Question 4

solar winds

Answer 4

flow of charged particles from the sun go on the suns surface

Question 5

solar storms

Answer 5

sun can send large blasts of energy- magnetic feilds to earth

Question 6

sun growing

Answer 6

when hydrogen combines in the suns core it creates nuclear fission that creates helium which is brighter and denser so it accumulates in core causing the sun to get hotter causing it to grow
the sun will grow until it reaches a balance between expansion and gravity
can grow to be 10 billion years (5 now)

Question 7

moon

Answer 7

temperatures extreme 
no atmosphere 
no liquid water 
1/6 of the gravity or earth 
a natural satellite

Question 8

highlands

Answer 8

mountaines that are high and rilles, valleys

Question 9

Cratures

Answer 9

can be up to 2500km across formed my meteorites or volcano

Question 10

Marina

Answer 10

dark filled with lava because of meteorite crash

thought to be seas (wrong)

Question 11

movement of the moon

Answer 11

moon orbits the sun 271 times in three days for earth

moon turns on itself once every 27 days

Question 12

far side

Answer 12

a lot of cratures
less marina
thick crust
not seen from earth

Question 13

asteroids

Answer 13

large pieces of rock in space

Question 14

meteoroids

Answer 14

smaller asteroids

Question 15

meteors

Answer 15

rocks going through the atmosphere

Question 16

meteorites

Answer 16

meteors that reach the ground

Question 17

moon phases

Answer 17

moonlight that is reflected by the sun
1/2 of the moon is always reflecting light
on earth we see different amounts
the amount seen is called the phase

Question 18

new moon

Answer 18

all dark

Question 19

first quarter

Answer 19

right half seen

Question 20

waxing gibbous

Answer 20

3/4 seen on the right side

Question 21

full

Answer 21

all seen

Question 22

waning gibbous

Answer 22

3/4 seen from the left

Question 23

last quarter

Answer 23

half seen on the left

Question 24

waning crescent

Answer 24

little seen on the left

Question 25

lunar eclipse

Answer 25

moon moves into earths shadow
for 4hours
three times per year

Question 26

solar eclipse

Answer 26

moon moves between the sun and the earth
the moon casts a shadow on a part of the earth
rare

Question 27

Tides

Answer 27

the pull of moons gravity effects the water on earth
every 12 hours it changes
moon pulls in then the moon pulls out

Question 28

Constelation

Answer 28

a group of stars forming a recognizable pattern

Question 29

asterism

Answer 29

smaller than constellation

group of stars