Physics Flashcards
How do Hinduism believe the universe was created
Universe created by Brahma
How did Atheism belive the universe was created
the universe might simply have existed for all eternity
Ancient beliefs about the universe
Sun eaten by monsters during a solar eclipse
Earth was flat
Earth supported by pillars
Earth Surrounded by oceans
Geocentric model
All the planets and the sun orbited Earth
Earth did not move
An orbservation that could not be explained by geocentric model
Retrograde motion
observations that led to our present model of the Solar System
Galileo’s discoveries about the Moon, Jupiter’s moons, Venus, and suns
supported the idea that the Sun not the Earth was the center of the Universe
describe how observations led to a different model of the Solar System
Because of telescopes more accurate measurements of night sky objects were possible
Describe heliocentric model
the Sun is in the centre of the solar system and all of the planets and other objects in the system orbit the Sun
How do 4 moons orbiting Jupiter prove heliocentric model
if moons could orbit a planet, it’s true that the Earth orbited the Sun after all
Age of Solar system
4.5 billion years
Time scale of the universe
Our galaxy began to form 2 billion years after big bang
Solar system formed 9.2 billion years
Earliest traces of life on Earth emerging 10.3 billion years
why atoms could not be formed immediately after the Big Bang
there isn’t enough energy for these nuclei to fuse together into heavier combinations
what is meant by the Big Bang
the rapid expansion of matter from a state of extremely high density and temperature which created our universe
ways in which the Big Bang theory is supported by evidence
the measured abundances of elements,
the observed expansion of space
the discovery of the cosmic microwave background
name the orbits a satellite can take
low Earth orbit (LEO)
medium Earth orbit (MEO)
High Earth orbit (HEO).
