Card Set Information
Nicolaus Copernicus (1473–1543) did what?
Copernicus devel-oped a heliocentric theory of the known universe
Nicolaus Copernicus was flawed why
His revolu-tionary theory was flawed in that he assumed that the planets had circular orbits around the Sun.
who corrected Nicolaus Copernicus flawed theory
Tycho Brahe created what theory
He de-vised a halfway theory called the Tychonic system.
Accord-ing to Tycho’s theory
Earth is stationary, with the Sun and the Moon revolving around it, while all the other planets re-volve around the Sun.
Galileo Galilei created what formula
formulated his famous law of falling bodies: All objects fall with the same acceleration regardless of their weight.
Isaac Newton (1642–1727) developed what type of math
began developing the math-ematics that later became calcu-lus
Isaac Newton discovered what in light?
white light is actually a mixture of all colors.
when is the least extreme tides during what moon phase
1st , 3rd quarter
sun tides are how strong
not that strong compared to moon tides
when man landed on the moon on july 20, 1969. where did he land?
synchronous rotation is what
moon rotates at the same rate as it revolves.
from earth we can only see 60% of the moon because of
when does the far side of the moon get sunlight
new moon phase
does earth go through phases if you were looking at the earth from the moon.
how many low and high tides happen each day
2 each day
how long do high tides last
about 50 minutes
when do the most extreme tides happen
during the full moon and new moon phase
if the tides last 50 mins twice a day. does that mean they happen at the same time everyday
no, the 50 minutes continues
full moon and new moon tides are called what
what is rock density?
what is water density?
what is irons density
what is density calculated by?
Earths density is
earths density is made up of what?
Half rock and half iron
how far is the moon?
240,000 miles away form earth
what is moon surface gravity?
1/16 of earths
moons mass is
1/80 of the earth
does the moon have a atmosphere?
what hold in gases to create an atmosphere?
what are the effects of not having gravity?
no rain, snow, sound, wind, weather.
when is it day time on the moon
the black sky
why is the sky blue?
sun light hits the atmosphere and the blue wave length which is longer gets spread out when hitting the air molecules.
what happens when the sun hit the thicker part of the atmosphere?
the shorter wave length shines through the atmosphere causing a red sunset.
why do people think the earths core is iron?
because of the magnetic field.
absorbs U.V. radiation
chlorofluorocarbons is short for
CFC cause what?
depletion of our ozone layer.
sign for carbon monoxide
sign for carbon dioxide
, what in soda
what do we exhale?
how far have we reached the earths core and how far has man been.
we have drilled 8miles through earth core and man has been 3 miles.
what is earths first layer?
earths crust is 3 to 20miles thick
what is the 2nd layer of earth core?
Mantle, is 2000 miles thick.
what is the third layer of earths core?
liquid iron state
what is the final layer of earth core
techno tics is what?
the small amount of movement from the plates moving.
200 million years ago how many continents were there?
believed to be 1 huge Continent
when the 1 continent broke apart what direction did they travel?
earth broken up continent are traveling NE.
earths core is believed to how hot?
timing the waves as they travel from one point and back to the original spot is called what?
what is earth diameter?
How much water is on the earth?
whats the highest temperature on the earth?
136 degree F
what is the lowest temperature on earth?
highest point of earth is what and where?
MT. Everest 29,035 or 5.5 miles high.
where does it rain the most?
MT. Walialeale, Hawaii at 460 inches per year
pacific ocean, 31,198 deep or 7 miles deep.
what is the first layer of earth atmosphere?
troposphere, 7 miles above sea level
what is the second layer of earth atmosphere?
stratosphere, 30 miles and up
what is the 3rd layer of earth atmosphere?
mesosphere, 50 and above
what is the 4th layer of earth atmosphere?
thermosphere or ionosphere 90 and above
what are the inferior planets?
mercury and Venus
what are the superior planets?
mars, Jupiter, Saturn, Uranus, Neptune.
what does inferior planets mean?
planets that lie on inside of earths orbit.
what does superior planets mean?
planets that lie on the outside of earths orbit.
Is it hot or cold on the Moon?
Day: 130°C 5 266°F 5 403 K
Night: 2180°C 5 2292°F 5 93K
It has no atmosphere.
when is the best time to see a superior planet?
in its opposition phase.
sidereal period is
time it takes to orbit around
synodic period is
how long it takes to return to its original position.
The angle between the Sun and a planet as viewed from Earth is called the planet’s
The geometric arrangements among Earth, another planet, and the Sun are called
a planet in opposition is
farthest from the sun next to the earth
a planet that is in conjunction is
closet to the sun on the opposite side of the earth.
does the moon rotate?
when are morning stars visible?
right before the sun does in the western sky.
when is the best time to see a planet which lies inside the earths orbit.
when the planet is on the greatest eastern elongation its visible at sunset.
when is the best time to see a planet which lies outside the earths orbit?
midnight is best to see the planets or after the sun is below the horizon.
what did Tycho Brahe accurately measure with an accuracy of 1 arcmin?
measuring planets position with an accuracy of 1 arcim possible with non telescopic instruments.
kelpers first law?
the orbit of a planet around the sun is an ellipse with the sun at one focus.
kelpers 2nd law
a line joining a planet and the sun sweeps out equal areas in equal intervals of time.
Keplers 3rd law
the square of a planet sidereal period around the sun is directly proportional to the cube of the length of its orbits semi major axis.
what Greek astronomer proposed a sun centered universe?
what is retrograde?
its when planets move backwards.
what direction are the planets moving when they retrograde?
East to west or left to right.
Greek astronomers believe was the earths shape was?
who created the measurement of earth circumference?
how did Eratosthenes measure the earth circumference?
he found noon time that pointed at Alexandria. using a vertical straight stick for the shadow.
who tried to measure the parallax?
how much is 1 arch minute?
1/60th of a minute
what astronomer had the first telescope to study the stars?
how many moons does Jupiter have?
kelpers 2nd law explains what?
that planets move faster when there closer to the sun and slower when further away.
how long does it take for mars to make 1 sidereal evolution?
24 months around the sun.
The sun,moon,stars,planets do what every day?
rise in the east and set in the west.
When does mars retrograde?
OCT 1st to DEC 1st
Ptolemy did what?
assigned each planet its own epicycles to explain retrograde motion.
Copernicus thought that the universe was a heliocentric universe which means?
the sun was at the center.
Aristotle thought earth was were in the universe?
at the center.
ancient Greeks thought the earth was
stationary and didn't rotate or revolve.
Statia is what?
it is a Olympic size stadium which measures 1/10 of a mile.
why do eclipses occur every 6 months?
the moons orbital plane is tipped by 5 degrees with respect to the ecliptic plane.
lunar eclipse is when?
is in a full moon
solar eclipse is when?
a new moon.
When the moon and sun inline perfectly with each other is called
what phase does the moon need to be in for total solar eclipse?
lunar eclipse is the shadow of?
shadow is the umbra which is about 170 mile shadow cast.
how long does a total eclipse last
about 7 1/2 minutes.
on the outside of the umbra shadow is called?
how many solar eclipses happen each year?
between 2 and 5.
three types of lunar eclipses?
umbra, penumbra, penumbral eclipse.
three types of solar eclipses?
Corona, annular and total eclipse.
what is the "line of nodes"?
its when the moon crosses ecliptic plane during a new of full moon and causes a eclipse.
when a potion of the moon passes through the umbra what type of eclipse do you get?
when the moon passes through the umbra completely you get what?
how long does a lunar eclipse last?
when is the eclipse season?
During the equinox season
how long does the eclipse season last
between 31 to 37 days.
how long does a solar eclipse last?
anywhere from 3 to 5 hours.
how old is the earth?
4.6 billion years old
pressure is measured how?
what is earth pressure?
The weight of the air pushing down creates a pressure at sea level of 14.7 pounds per square inch, which is commonly denoted as 1 atmosphere.