The Structure of the Universe
is a collection of large and small bodies orbiting our central star
What is a solar system?
Earth and all the planets go around the sun
is a force of attraction that is due to their masses and distance between them
What is a satellite?
the spinning of a body on an axis
What is a rotation?
is a spherical body that orbits the sun
What is a planet?
Earth is the center with everything circling around it
What is the geocentric theory?
is the path that a body follows as it travels around another object in space
What is an orbit?
it takes 27.3 days
How long does it take for the moon to orbit the Earth?
the time it takes to make a complete rotation
What is a day?
large cestial bodies that are composed of gas and emit light
What is a star?
the apparent shift in position of an object when viewed in a different poition
What is parallex?
where the object is farthest from the sun
the change in the moon apperance
What are lunar phases?
the motion of a body around another body in space
What is reulvation?
is a collection of stars, gas and dust held togther by gravity.
What is a galexy?
Who was Kepler?
where an object is closest to the sun
What is peruhekian?
is an event which one object in space casts a shadow on another
What is an eclispe?
a full rotation around the sun done by earth
What is a year?
is the distance light travels in a year
What is a lightyear?
discovered jupiters moons and venus's phases
Who was Galelio?
is an inward force that causes an object to move in a cicular motion
What is centripetal force
is the darkest part of an eclispe shadow
What is the umbra?
is the change of position which resultsd in tempature and weather
What are seasons?