Topic 9 lesson 1 Flashcards
what year did early astronomers first hypothsize why the moon and the planets shone
476 AD/CE
Did they have telescopes back then
nope
What is the largest and brightest object in the night sky
the moon
what is the only natural satellite on earth
da moon
a body that orbits a planet is a what
a satellite
what is a star made out of?
Superheated gas or plasma
do planets move in the night sky
yea
A rounded object that orbits the sun, and has its own gravitational pole is a what
an planet
how many planets are in the solar system
8 planets and 5 dwarf planets
A streak of light formed when a metermoid burns up in the atmosphere
Meteor
What has rock, iron, or ice flying through space
meteoroid
meteorid tat hits earth is called a what
meteorite
Dust and ice with a tail
a comet
how do comet trail form
Gas particles trail off as a comet approaches.
How often does Halley’s comet reappear?
every 75 years
a group of stars that people imagen represent an object.
constellation.
what are constellations named after
Greek or Roman things
how many constellations are divided into the night sky
88
what do the positions of the sky depend on
rotation of the Earth.
What direction do stars move.
east to west
where on earth do stars appear in a circular path.
poles
when do the constellations change
from season to season
During what season is Orion most visible to us?
Winter
What causes a change in season
Earths Revolution.
