The paths of planets are ellipses, with the Suan at one focus.
What is Keplers First Law.
100
Observed an eclipse when he was 14 in Denmark
Who was Tycho Brahe?
100
9.8 m/s^2
What is the gravitational pull on earth?
200
T=2(pi)(times the square root)(r^3/6Ms)
What is the period of a planet orbiting the sun
200
Polish Astronomer who died in 1543
Who is Nicholas Copernicus?
200
An imaginary line from the sun to the planets sweeps out equal areas in equal time intervals
What is Keplers Second Law
200
Became an assistant to Tycho Brahe in 1600.
Who was Johannes Kepler?
200
Discovered in 1781
What is the planet of Uranus?
300
v=(square root)(6ME/r)
What is the speed of a satellite orbiting the sun?
300
Created laws that described the motion of planets and satellites.
Who is Johannes Kepler
300
The square of the ratio of the periods of any two planets revolving about the Sun is equal to the cube of the ratio of their average distances from the Sun.
What is Keplers Third Law
300
Saw an apple fall, discovered gravity.
Who was Isaac Newton?
300
Orbit's Earth once a day at an altitude of 35,785 km
What is the GOES weather satellite.
400
T=2(pi)(square root)(r^3/6ME0
What is the period of a satellite orbiting the earth?
400
Measured the orbital radii of Jupiter’s moons using the diameter of Jupiter as a unit of measure.
Who is Galileo
400
The force of attraction between two objects must be proportional to the objects’ masses.
What is Gravitational Force
400
Granted an estate on the Danish island of Hven.
Who was Tycho Brahe?
400
Proposed that gravity is not a force but rather an effect of space itself.
Who is Albert Einstein?
500
g=6m/r^2
What is the formula for a gravitational field?
500
Used equipment to measure gravitational force between objects.
Who is Henry Cavendish?
500
Objects attract other objects with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.
What is the Law of Universal Gravitation
500
Developed an apparatus sensitive enough to measure force of gravitational attraction.
Who was Henry Cavendish?
500
A compact, massive object with an escape velocity so high that nothing, not even light, can escape.