Astronomers
Vocabulary for Planetary Motion
Kepler's Laws of Planetary Motion
Newton's Laws of Motion & Law of Universal Gravitation
History
1
Created a sun-centered theory of the solar system
Who is Copernicus?
1

One complete trip along an orbit

What is revolution? What is a cicle?

1
TWO PART QUESTION: Each planet moves around the sun in ... Also, name which law of Motion.
What is the path the shape of an ellipse? What is Kepler's First Law of Motion?
1
TWO PART QUESTION: What happens if objects gain mass and the distance between them decreases? Name Newton's Law.
What is gravity between them increases? What is the Law of Universal Gravitation?
1

This time where all the scientific studies and art where reborn as a cultural and social movement

Illustration

2
Created an earth-centered theory of the universe.
Who is Ptolemy?
2
The spin of a body on its axis
What is rotation?
2
TWO PART QUESTION: The closer a planet is to the sun...
What is the faster it travels around the sun? What is Kepler's Second Law of Planetary Motion?
2
Newton's First Law of Motion States
What is An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion will remain in motion, constant speed, same direction, unless acted on by an unbalanced force.
2

Order the following astronomers:

Galileo, Newton, Copernicus, Kepler


Copernicus - Kepler - Galileo - Newton

3
Showed that planets move in elliptical orbits around the sun.
Who is Kepler?
3
The path of a body that travels around another body in space
What is orbit?
3
TWO PART QUESTION: Planets that are more distant from the sun take ______ to orbit than planets that are closer to the sun.
What is longer? What is Kepler's Third Law of Motion?
3
Newton's second law of motion states that the acceleration of an object depends on...
What is the mass of the object and the amount of force applied.
3

Kepler was born on ______ (year)

1571

4
Showed that gravity keeps planets and moons in orbit.
Who is Newton?
4
The amount of time it takes a body to complete a trip along an orbit.
What is period of revolution? (or what is period?)
4
TWO PART QUESTION: The period of a planet's revolution can be used to calculate the planet's... Name the Law of Planetary Motion...
What is the distance from the sun? What is Kepler's Third Law of Motion?
4
TWO PART QUESTION: This law explains that a runner is able to move forward because of the _________ and __________ force that the ground exerts on the runner's foot after each step.
What is equal and opposite? What is Newton's third law of motion?
4

Galileo Galilei was born on ______ (Place)

Italy

5

Mathematician and astronomer to observe in close detail the motion of Mars

Tycho Brahe

5
Used to describe the average distance between a planet and the sun.
What is semimajor axis?
5
Briefly state Kepler's three laws of planetary motion.
What is Kepler's first law of motion states that orbits are elliptical; the second law states that planets move faster when they are closer to the sun than they move when they are farther from the sun; the third law explains the relationship between a planet's period of revolution and its semimajor axis.
5
Sing Newton's Law of Motion song to the tune of What Does a Fox Say? https://www.youtube.com/watch?v=okCCGxWs_L8
What is What's Newton's Law Say?
5
Tycho Brahe´s observatory was located in ______

Prague

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