Topic 1&2 unit E Flashcards
(21 cards)
who created the Geocentric model?
Aristotle
who created the Heliocentric model
Nicholas copertoucas
what is the difference between the Geo and Helio version
Geocentric - Earth is the centre of the universe and everything revolves around it.
Heliocentric - Sun is the center of the universe and everything revolves around it.
Who invented the first telescope
Hans Lippershey but Galileo Galilee was the first to see space with it
what word is used to describe the times when the length of day equals the length of night
Equinox
what did the summer and winter solstice indicate to ancient people
marked start of new year
what does a sundial do
measure the passage of time
what does a Merkhet do
accurately meassure a straight vertical line
what does a Quadrant do
measures stars height above the horizon
what is a astroble
charts a stars position
what does a cross staff do
used to measure the angle between the moon and any given star
how long does it take sun to reach earth
8 minutes
what is a star
a glowing ball of gas that gives off lots of light
what is a constellation
A group of stars that form patterns
what is the main chemical in an element
Hydrogen
what are Asteroids
Metallic bodies traveling space
What 3 different measurements do we use to find a position of a star
Azimuth, Altitude, Zenith
What is the point directly above our heads called
Zenith
What are the 3 basic parts of a rocket
Payload, mechanical elements, Fuel
What is a lightyear
the distance that light travels in one year
What are the three types of Galaxies
spiral, elliptical, irregular
