The time it takes a comet to complete one revolution is called
period
The speed of the planets about the sun depends on...?
their distance from the sun
Planets move at the same speed as they orbit the Sun.
True or False
False
Planets change speeds as they orbit the Sun
Kepler's 1st Law states that all planets orbit the sun in a shape called an?
Ellipse
A planet sweeps out in an equal area in equal time
True or False
True
What does T^2=R^3 mean?
T=Obtical period
R= mean distance from the sun
The moon is the focus
True or false
False
The sun is the focus
Kepler's second law states that equal areas are covered in equal amounts of time as an object...?
orbits the sun
What is an AU (astronomical unit)?
Unit used most to describe distances in the solar system
Saturn's year is longer than Earth's because...?
Saturn has a longer major axis
Kepler's second law is about?
A vector joining any planet sweeps equal area in equal time
Kepler's Third Law of Planetary Motion describes the relationship between the planet's...?
a- Time it takes to orbit the Sun and its distance from the Sun
b- Mass and distance from the Sun
A
It takes Pluto a longer time to orbit the sun than the Earth does because...?
Goes much slower, has much further to go
Which of the following is correct?
A- Planets move slower when they are closer to the sun, faster when they are farther away.
B- Planets move faster when they are closer to the sun, slower when they are farther away.
B
What is the Third Law's ratio?
T^2/r^3