Term
| What does our view of the universe begin with? |
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Definition
| Our view of the universe always begins with Earth. Everythin is described, measured, and compared with Earth. |
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Term
| Earth's core is made of what? |
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Definition
| Earth has a metallic core. |
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Term
Earth is mainly comprise of what?
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Definition
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Term
| What two elements are the sun made up of? |
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Definition
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Term
| What is the surface temperature of the sun in Farenheit? |
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Definition
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Term
What are fused together in the sun?
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Definition
| 700,00 million tons of hydrogen and 695 million tons of helium |
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Term
| How fast is our galaxy moving? |
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Definition
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Term
Galaxies spin in what shape?
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Definition
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Term
Galaxies contain appx how many stars?
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Definition
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Term
| Our galaxy is located where? |
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Definition
| In the center of the milky way on an outer arm |
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Term
| How many galaxies are in the universe? |
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Definition
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Term
| The night sky did what for farmers? |
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Definition
| Acted like a clock and told them when to plant and harvest. |
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Term
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Definition
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Term
| What is it called when people predicted the behavior of the world based on the motion of the heavens? |
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Definition
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Term
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Definition
| The belief that the motions of the heavens predetermine our fate. |
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Term
| In the 6th century the sky what split into 3 regions. What are they? |
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Definition
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Term
| What is a scientific hypothesis accepted until proved wrong? |
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Definition
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Term
| What did the greeks use to calculate the earth's size within 10%? |
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Definition
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Term
| What things were the greeks able to calculate? |
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Definition
-distance from earth to moon
-earth to sun
-also thought stars were fixeds, small, and traveled together |
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Term
| How many planets could the greeks see with the naked eye? |
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Definition
5.
jupiter
saturn
mars
mercury
venus
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Term
in the 4th century Aristole introduced us to what theory?
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Definition
| theory of the finite universe |
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Term
| What did aristole believe was the center of the universe? |
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Definition
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Term
| in the first century AD, Ptolemy theory proved what? |
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Definition
that the planets moved in epicycles or prescribed paths
-also predicted changing velocities
he predicted it however did not understand the principles why |
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Term
| in the 15th century copernicus studied ptolemy's work and introduced what theory? |
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Definition
| heliocentrism which stated the sun was at the center of the universe |
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Term
| How long does it take Mercury to orbit sun? |
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Definition
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Term
| How long does it take saturn to orbit the sun? |
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Definition
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Term
| How often does earth rotate on it's axis? |
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Definition
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Term
| What was Copernicus's theory he published called? |
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Definition
| "Concerning the Revolution of the Celestial Orbs" |
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Term
| Who did Copernicus's work pave the way for? |
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Definition
| Kepler who was born in 1571 and the champion of observational science |
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Term
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Definition
that planet's travel in elliptical as opposed to spherical orbits
-as planets approached the sun they sped up; further away they travelled slower |
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Term
Galleileo proved Copernicus and Kepler right by using a what?
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Definition
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Term
| What could Galeleo see with the telescope? |
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Definition
| craters on the moon, new stars, moons of jupiter, etc |
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Term
| What work did Galleileo publish in which the pope put him on trial? |
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Definition
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Term
| What concept did Galleileo prove? |
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Definition
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Term
| Who created physics by putting together the works of Galleileo and Kepler? |
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Definition
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Term
| What did he use to determine the laws of nature? |
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Definition
| observation and mathematics |
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Term
| Newton's book Principia explained what? |
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Definition
| how gravity affects everything. tide, gravitational pull, etc |
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Term
When and where was Einstein born?
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Definition
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Term
| What did Einstein develop and pioneer? |
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Definition
| modern laws of physics and pioneered spatial relativity |
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Term
| What shape did he think space and time made? |
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Definition
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Term
| The greater the mass the great the ________ of the space time fabric. |
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Definition
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Term
| Who did an experiment with a solar eclipse? |
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Definition
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Term
| He proved objects could warp______and ______. |
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Definition
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Term
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Definition
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Term
| Eistein postulated that the universe must be __________. |
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Definition
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Term
| _________ theorized that the universe was born and was in fact getting larger. |
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Definition
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Term
| What did the universe begin with? |
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Definition
| a primeval atom that was infinitely dense hot cosmic egg that exploded/expanded and set the universe in motion |
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Term
| Who proved Lumetra right? |
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Definition
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Term
| Hubble determined _________ this star known for it's brightness |
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Definition
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Term
| How old did Hubble appx the age of the universe was in 1929? |
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Definition
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Term
| What theory competed with the big bang theory? |
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Definition
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Term
| What did the steady state theory say? |
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Definition
| it said that the universe has and and always will be in a locked state of existance |
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Term
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Definition
| That hydrogen and helium always existed because it was always being created somewhere in the universe |
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Term
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Definition
| He was Lumetra's nemisis. He basically questioned Hoyle. Said that there should be leftover heat from the big bang theory. however, no one could measure or find it. |
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