4th grade earth sun and moon study guide
how big is the moon compared to earth
1/4 the size of eath. if you cut the earth into 4 even parts one of the parts is the size of the moon its like a tennis ball compared to a basketball
how many days do it take for the moon to show all of its phases
29 days
how long is earths trip around the sun?
365 this is also one year
Does the sun move around the earth or does the earth move around the sun?
The earth moves around the sun. The sun does not move
what is a hot, glowing sphere of gases that give off energy
a star
gibbous moon
almost full moon
why does the moon look bigger than the stars?
because the moon is closer to the earth than stars are. objects always appear to be smaller when they are further away.
first quarter moon
the moon is a quarter of the way around earth, this is sometimes called a half moon
full moon
the moon is now halfway around earth. you can see all of its lighted side
how does the moon get light?
the moon reflects sun light onto earth. many may think that its moonlight but it is in fact sunlight shinning on the moon that lights the earth at night
which takes longer the earth's trip around the sun or the moons trip around the earth?
the moon takes a shorter time to go around the earth and the earth takes a longer time to go around the sun
what did the astronauts do when they got to the moon
collected data, rock and dust samples..missions to the moon were so expensive that they send robots and not people.. people only went 6 times
ellipse
flattened circle
craters
hollow area, or pit, in the ground
is a planet a star?
no
does all planets revolve around the sun
yes
does the moon have gravity
yes, but is weak.. you would weigh less on the moon
is the sun the same size as other stars?
yes, its is a medium size star
what is a satellite
is an object that moves that moves in orbit around another , larger body
the apollo missions did what?
sent astronauts to the moon six times
from earth planets can look like what in the night sky?
stars
crescent moon
the lighted side has almost disappeared. soon a new moon will beginthe cycle again
orbit
the path that a revolving object moves along
can you feel how powerful the suns energy is?
yes, the heat you feel from the sun is the energy that is gives off.
how did the the craters form on the moon
ancient volcanoes may have formed some of these craters but most of the craters where formed when rocks and metal from space crashed into the moon
an imaginary line drawn from the northpole to the south pole is earths what?
axis
why does the sun look bigger than other stars?
because it is closer to earth
how can it be afternoon where you live and the middle of the night in asia?
because the earth moves
can you feel earths rotation?
no
does the moon have its own light?
no,
could someone stand on a star or the sun?
no, because it is not solid! it is a gas
does all planets rotate at the same speed?
no, they move at different speeds
the different shapes of the moon is called what?
phases
like the moon these things can't make light . they are smaller and cooler than a star. what is it?
planets
what are planets
planets are satellites of the sun
earth revolves around the sun and the moon does what?
revolves around the earth. this means the moon cirlces the earth
the first missions to the moon was done by what?
robots and spacecraft
because the earth is tilted this causes the earth to have what?
seasons
as earth rotates you see different parts of what?
space
what do astronauts wear for protection while they are in outerspace
spacesuits
As the sun moves around the earth what is the earth doing?
spin, another word for spin is rotate
crescent moon
the lighted side of the moon begins to show. The moon is waxing, which meaning the part you see is growing larger
daytime on this place is soo hot that your blood would boil, and at night time this place is much colder than any place on earth. this place has mountains, and a large number craters
the moon
what place is dusty, has no life, no air and no liquid there?
the moon
last quarter moon
the moon is three-quarters of the way around earth
gibbous moon #2
the moon is waning, meaning the part you see is getting smaller
when it is day light outside this means what?
the part of earth where you live is facing the sun
when earth rotates and it is night time where you live this means what?
the part of earth where you live is not facing the sun
which is bigger the moon or the stars?
the stars
what star do you see in the day time
the sun
solar system
the sun, earth, eight other planets their moons and smaller objects make up the solar system
why do some scientist think that earth is tilted?
they think that long ago a large object. Maybe a rock hit earth and pushed earth on its side and earth stayed tilted
is earth straight up and down or is earth tilted?
tilted
revolves
to move in a circular or nearly circular path around something else. The earth turns around the sun in a circle .
new moon
when the moon is between the sun and earth. you can't see the lighted part of the moon
does every planet rotate on an axis
yes
on a clear night is it possible to see a planet?
yes
what is an axis
a real or imaginary line that a spinning object turns around
what fuels the sun and helps it to make heat and light energy?
hydrogen
how does the tilt of the earth cause seasons
in june the north pole tilts toward the sun. in december the north pole tilts away from the sun this is called winter
what is gravity
it is a force that holds things to the ground, and determines how much things weigh
how long does one complete rotation of earth around the sun take?
24 hours this is the same as one whole day
how long does it take for the moon to travel around the earth
28 days
Rotates
earth spins as it travels around the sun
What causes night and day?
earths rotation. the sun can only shine on a portion of the earths surface at a time.
