He discovered that planets orbits are elliptical and the sun is in the middle.
What is Johannes Kepler.
100
movement of one object in an orbit around another object.
What is a planets revolution.
100
the lit half of this faces away from Earth and the unlit half is towards Earth. There is however enough sunlight reflected from Earth to light the dark side of the moon very dimly.
What is a new moon
100
The angle that a planet's axis is tilted from vertical.
What is axial tilt.
100
a season is a period of the year with a certainlevel of temperature and--
-- type of weather.
200
a chunk of rock and metal that orbits the sun.
What is an asteroid.
200
the point where the planet is farthest from the sun.
What is aphelion
200
Between the full moon and new moon the visible part of the litside gets larger. These shapes you see are called the...
What are waxing phases
200
the southern hemisphere is warmer in the winter and doesnt get very cold often and the northern hemisphere is warm in the summer and cold in the winter.
how the nothern and southern hemisphere are differnt with seasons.
200
phases are different shapes the moon seems to have--
when it is viewed from Earth.
300
because the comet might pass the sun
why are comets visible when they are near the sun?
300
the point in orbit where a planet is closest to the sun.
What is a perihelion
300
from full moon to new moon the visible part of the moon's sunlit side gets smaller. The shapes you see are called the....
What are the waning phases.
300
the ammount of axial tilt and the planets orbit affect
What is what affects Mars' seasons.
300
an oval path that a planet takes.
What is an ellipse
400
one model where the sun is in the middle and the planets have circular orbits, and one model where the Earth is in the middle and the planets don't move at all.
What is Ptolemy and Coperinicus' models of the solar system.
400
this would happen to Earth if it was farther away from the sun
the Earth would be colder and the seasons would be colder too.
400
would it be possible to see Earth's phases from Mars?
it would because they are close and not very far away.
400
if this hapenned some places would not get nearly as much sunlight.
Earth's seasons without an axial tilt.
400
a meteoroid is
a chunk smaller than an asteroid.
500
a large unit for measuring distances beyond the solar systems.
What is a light year.
500
precession causes Earth to wobble slowly on its _____
What is axis
500
it is easiest to see the phases of the moon and--
What is Venus.
500
one visual sign of seasons on Mars is the change in the planets--
What is icecaps.
500
many asteroids crammed together in a belt form between Mars and Jupiter.