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40 Cards in this Set

  • Front
  • Back

major contributions in different fields and not Philosophers

The Greek

Great scientists and mathematicians

The Greek

Golden Age of early astronomy was centered

Greece

They made use of their ______________ to explain certain events

observational data

They were the ones who measured the _______ and _______ of the sun and moon

sizes and the distances

They used basic ________

geometry and trigonometry

Early Greeks viewed the earth as____

Geocentric view

Geocentrism

earth centered

Heliocentrism

Sun Centered

The celestial bodies_________ the Earth

Orbited

traveled daily around the earth but all stayed transparent and hollow sphere beyond the planets called celestial sphere

Stars

The shape of the Earth has a bulging equator and Squeezed poles

Oblate Spheroid

happens two times in the year

Solstice

two types of Solstice

summer and winter solstice

reaches its highest or lowest point in the say at noon marked by the longest and shortest days

sun

obscuring of the light from one celestial body

Eclipse

Moon moves into the Earth's shadow, causing the Moon to be

Lunar Eclipse

Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially

Solar Eclipse

Earth and planet revolve the sun

Heliocentrism

Earth is assumed to be at the center of it all

Geocentrism

Greens Believed that the earth was round not flat

500 BC

first to propose a spherical earth

Pythagoras and his pupils

500 to 430 BC he supported Pythangoras proposal through his observations of shadows that cast on the moon during a lunar eclipse

Anaxagoras

reflected on the moon's surface and shadow reflected was circularAristotle - 340 BC listed several

Earth's shadow

340 BC listed several arguments for Spherical Earth including position of north star and disappearance of North star the ships believed to be at a fixed position in the sky

Aristotle

In the________ they noticed that the north star is closer to the horizon

Equator like Egypt

argued the shape of the sun and moon were both spherical perhaps the earth is too

Aristotle

observers should become smaller and smaller until it disappeared the hull disappeared first before the sail

Disappearing ships

Ancient scholars provided a proof of a spherical earth and its Circumference through calculation

Size of the Spherical Earth

gave the most accurate size during their time

Eratosthenes

Eratosthenes was working in


Library of Alexandria in Northern Egypt

he received correspondence that no vertical object cast any shadow at noontime during summer Solstice


Syene in South Egypt

"at noon time during the summer solstice vertical object still cast shadow "

Alexandria

determined the angle of the sun

Erasthothenes-

what did Erasthothenes use

vertical Stick cast

in Alexandria Sun makes an angle of _______ from the fertical

7.2°

in Syene

0°

the light rays coming from the sun are_____ and the Eath is Curved


parallel

Earth is approximately______ Stadia


250,000

One stadia is_

40,000 Km