the solar system Flashcards
(12 cards)
give 3 pieces of evidence that the earth is a sphere
when looking out to the sea the horizon is seen as curved, if the earth were flat, sunrise and sunset would occur at the same time all over the earth, people have flown and sailed around the world, astronauts have taken pictures from space and it appears a sphere
define universe
thousand of galaxies
define galaxy
a group of stars held together by gravity
define solar system
a system of planets and stars that are found throughout galaxies
what’s earths rotation?
spinning of the earth on its axis
what’s earths revolution
the orbiting of the earth around the sun
define longitude
the measurement in degrees east or west of the prime meridian
what’s another name for the prime meridian
Greenwich meridian
define latitude
the measurement of degrees north and south of the equator
longitude lines connect the _____ and _____ poles
north and south
The line of 0 degrees C is called the _____________
prime meridian
steps for calculating time in the same hemisphere
