ASTRONOMY

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winta intaaaaa

the moon ___ falling but it is also moving _____, always ending in a _______ orbit

is/sideways/circle

the stars ____ falling but they always _____ us

are/miss

the stars collide _____

never

a spaceship must travel ____ miles from Earth to experience weightlessness because it can be on ____ there

100/orbit

if a cup of tea were placed on the surface of the moon it would ______

boil

the feeling of weightlessness in space is caused by the fact that the spaceship is ____ _____

falling freely

the apollo astronauts turned on their rocket engine for a ____ _____

few minutes

only a rocket can travel in space because there is no ____ or ____ there

air/land

there have been ____ spaceships have been sent to the stars

no

if you throw a rock as fast as ___ km/s without air resistance it will ____ the earth _____

8/circle/forever

according to keplers ____ law, the planets are orbiting in a _____ shape

first/ellipse

keplers 1st law (about orbit) applies to the ____, earth, ____, jupiter, an asteroid, and a comet. but not a ____ ____ _____

moon/venus/solar wind particle

_____ velocity is the speed needed to get an object on an _____ where it ____ returns

escape/orbit/never

shooting stars arrive in earths atmosphere at anywhere from ____-_____ km/s

10/100

a spaceship needs to move at _____ km/s in order to reach the moon

10

it normally takes a space ship ____ hours to orbit around the earth

1.5

the moon has ____ atmosphere because air molecules move _____ than the escape velocity

no/faster

if a spaceship is launched from the moon, the slowest speed it would need in order to leave the solar system is ____ km/s

17

the invention of the ____-_____ _____ made if possible to build rockets that speed was fast enough to orbit the earth

multi/stage/rocket

spaceships are extremely expensive because their ___ to ____ ratio is tiny

cargo/fuel

it would take ____ _____ (one way) to take a trip to Mars with minimal energy.

nine months

if you were going the fastest speed possible, ___ km/s it would still take _______ ______ to reach the closest star.

20/60,000 years

a spaceship will follow an _____ on its orbit to _____

ellipse/mars

a rocket engine _____ work on a flight to mars

doesnt

Copernicus teaching was the _____ world view that the ____ revolve around the ______

heliocentric/planets/sun

Copernicus _____ the first to say that the earth revolved around the sun, the idea was well known but only ____ believed it

wasnt/few

Copernicus' method explained the motion of the planets more ____ but not more ______

naturally/precisely

the ______ worldview is called that because it says that the center of the world is the ______

heliocentric/sun

Galileo didn't discover the telescope but he did _____ one after ____ discovered it

create/others

Galileo's most important contribution to astronomy was that he used a _____ to _____ the ______

telescope/watch/sky

Galileo's discoveries were the most important every made in astronomy because they prove that the _____ and the ______ are not ____ worlds

earth/sky/different

keplers _____ law states that the _____ of the orbit of the planets is an ______

first/shape/ellipse

kepler's ____ law states that the ____ move _____ when closer to the sun

second/planets/faster

kepler's ____ law states that a planets _____ from its star (a) is related to its period of _____ (T) and the mass of the star (M) so a(cubed)=MT(squared)

third/distance/revolution

Isaac _____ discovered the ____ of _____ _____

Newton/law/gravitational force

to us, the people in china are _____ _____, they aren't falling because ____ pulls them to the ground

upside down/gravity

without gravity, the moon would have _____ on a straight line, ______

escaped/sideways

there ____ a gravitational force between two people but it is very ______

is/tiny

most asteroids are located _____ the orbits of _____ and ______

between/mars/jupiter

venus is a _____ planet

terrestrial

saturn is a _____ planet

gas giant

an ____ is a large space rock

asteroid

gas giants are located ____ the ____ belt

outside/asteroid

Sedna is different from a large comet because it ____ goes close to the _____

never/sun

the ____ of a come consists of ____ that is more rarefied air

tail/gas

the _____ of a comet is made of _____

head/gas

_____ discovered the ____ moons of Jupiter

Galileo/4

pluto is made of ____

ice

____ ___ takes up the most space in the solar system

empty space

comets orbit around the ____

sun

an astronomical unit is the _____ from the ____ to _____

distance/sun/earth

a shooting star is as large as a ____ of _____

grain/dust

meteor showers have a _____ because meteors are arriving _____ to each other and they seem to diverge due to a _____

radiant/parallel/perspective

a _____ is a very large meteor

fireball

meteor showers consist of ____ or _____

ice/rock

meteors can be made of ____, stone, or ____ NOT _____

iron/ice/gas

____ meteors originate in the depth of a ____ that blew up

iron/planet

we have found _____ that originated in Mars, allowing us to believe that we have rock on Mars

meteorites

_____ are falling bodies burning in the atmosphere while ______ have reached the ground

meteors/meteorites

it takes a few ____ to see that a ____ is moving, and a few ____ to see a significant progress on its orbit

days/comet/weeks

Comet Halley is famous because it is the first comet to be ______ returning

periodically

_____ spend most of their time on the outskirts of the solar system on the outside of _______

comets/pluto

a ____ is a large piece of ice with rock frozen in it, also called a ______ ______

comet/dirty iceberg

the ____ and _____ of a comet are made of rarefied gas that is much _____ than what we would call a vacuum on earth

head/tail/thinner

after a ____ comet visits the sun a few thousand times its ice _____ and the ____ inside is _____

periodic/evaporates/dust/frozen

if a ___ hit the earth, there would be extensive _____ especially in that continent where it hit, but there would be no immediate _____ on all of earth

comet/damage/catastrophe

pluto looks like a ____ ____ in a good telescope

tiny dot

there are probably _____ or pluto-like planets but we know of about ______

hundreds/ten

____ are made of rock while _____ are made of ice

asteroids/comets

the solar system is _____ million years old

4,500

the planets formed from _____ material after the ____ was formed

leftover/sun

____ planets contain little amounts of hydrogen and helium because the ____ wind blew these materials out of the ____ solar system

terrestrial/solar/inner

the ____ formed when ____ was hit by another planet

moon/earth

Jupiter is so _____ because it is outside of the snowline where light ____ are frozen out

large/gases

___ and _____ are made of least modified matter, which resembles the "stuff" that the solar system was originally made of

comets/KBOs

KBOs are much ____ than gas giants because the ________ picked up most of the gas that was blown out from the inner solar system

smaller/gas giants

Jupiter is ____ because of the ____ in its _____

yellow/chemicals/clouds

Jupiter is shaped like a(n) _____ because of its _____ _______

egg/fast rotation

the giant ___ spot on jupiter is a ____ ____

red/giant storm

the stripes and bands of Jupiter are different colors because they are clouds of different _____, temperature, and _____ composition

height/chemical

the clouds of Jupiter are turned into regular patterns and parallel bands and stripes because of ____ _____

differential rotation

we know the conditions inside earth from studying ________

earthquakes

the ______ part of earth is a very thin ____ that floats ____ the hot and molten interior

solid/crust/over

the center of the earth is ___, about ____ degrees

hot/2000

there are no _____ on the moon because it is a small body and it has already cooled off enough to have a ____ _____

volcanoes/thick crust

the inside of the earth is ____ because it is still ______ and hasn't had enough time to completely _____

hot/cooling/cool

Venus doesn't have a ____ field because it ___ too _____

magnetic/rotates/slowly

Mars has no magnetic field and this causes _____ to reach down to its surface

radiation

the Van Allen belts are in ____ around _____

space/earth

____ and the Moon are similar because they are too _____ for a planet

Mercury/small

like the moon, the surface of ____ is covered with _____

mercury/craters

the biggest difference between the moon and mercury is that the ____ has many ______

moon/marea

_____, a terrestrial planet, has a surface with most signs of volcanic activity

Venus

Excluding Earth, _______ planet has moving tectonic plates

no

excluding earth, ____ planets has water on its surface

0

the substance of the moons of Jupiter are are known from the measurement of their ______

density

____ _____ is the heat that keeps the volcanic activity in the moons of Jupiter

tidal forces

the largest volcanic eruption in the solar system has been seen on

Io

the grooves and straight lines on Ganymeade and Europa are caused by ____ erupting from an underground _______

water/ocean

there are ____ worlds in the solar system that are known to possess liquid seas or lakes

2

____ ___ falls from they sky on Titan

liquid methane

_____ appears red because of the _____ rock on its surface

mars/oxidized

we _____ see canals on Mars

can't

there is no ____ in Mar's atmosphere. it has an atmosphere but there is no ______

oxygen/oxygen

____ ______ makes up most of mars' atmosphere

carbon dioxide

mars has _____ atmosphere because it doesn't have a _____ _____ to protect it

little/magnetic field

there are ____ permanent rivers on mars but sometimes _____ erupts from the surface

no/water

in a telescope you can see the ____ of venus, but no other detail

phases

____ is made of ____% carbon dioxide

venus/99

the clouds of venus are composed of ____ ____

sulfuric acid

the surface of venus is so hot because of the ______ ______

greenhouse effect

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