PhySci (4th Quarter) Flashcards
He was a Danish astronomer and nobleman who made accurate observations of the movement of celestial bodies in an observatory built for him by
King Frederick II of Denmark in 1576.
Tycho Brahe
Emperor Rudolf II recommended _____________ to work for him as an assistant.
Johannes Kepler
_______ was born to a poor German family and studied as a scholar at the University of Tübingen in 1589.
Johannes Kepler
This table was the most accurate table that is known in the astronomical world
Rudolphine Tables
He made the law of planetary motion
Johannes Kepler
When Kepler tried to figure out Mars’ orbit, it did not fit the then-famous theory that a planet follows a circular path.
First law; The Law of ellipses
The second law, which is the _________________
states that when an imaginary line is drawn from the center of the Sun to the center of a planet, the line
will sweep out an equal area of space in equal time intervals.
Second Law: The Law of Equal Areas
The law describes how fast a planet moves in its orbit. A planet moves fastest when it is nearest the Sun and slowest when it is farthest from the Sun, and still, the same area is swept out by the line in equal amounts of time.
Second Law: The Law of Equal Areas
which is the third law, describes that the square of a planet’s orbital period (T2) is proportional to the cube of a planet’s average distance from the Sun (R3). It states that that the ratio of the squares of the periods of two planets is equal to the ratio of the cubes of the average distances of these two planets from the Sun
Third Law: The law of harmonies,
What are the 3 Law of planetary Motion
First Law; The Law of ellipses
Second Law; The Law of Equal Areas
Third Law; The Law of Harmonies
was a German astronomer and mathematician who worked as an assistant to Brahe and formulated the three laws of planetary motion based on Brahe’s extensive astronomical data.
Johannes Kepler
states that planets follow an elliptical orbit.
Law of ellipses
is the action of changing location or position. Life is motion.
From the coordination of the muscles of our body which enables us to walk, run, and dance to the pumping of our hearts to deliver blood to the different parts of our bodies are motion.
Motion
is referred to as natural motion. In a natural motion, the object will move and will return to its natural state based on the object’s material or composition - earth, water, air, and fire.
Vertical motion (Aristotle)
An object moving in a violent motion requires push or pull to maintain horizontal motion. Motion continues only so long as there is an applied force to an object. When the force is removed, motion stops.
Horizontal motion (Aristotle)
Aristotle believed that the projectile motion of an object is parallel to the ground until it is the object’s time to fall back into the ground. An impetus will be kept by the object until such time that the initial force is forgotten, and the object returns to its natural state to stop moving and fall to the ground.
Projectile Motion (Aristotle)
In the absence of a resistance, objects would fall not depending on their
weight, but in the time of fall. Also, if the object encountered a resistive force from a fluid equal or greater than its weight, it will slow down and reaches a uniform motion until it reaches the bottom and stops.
Vertical Motion (Galileo Galilei)
An object in motion, if unimpeded, will continue to be in motion, and an external force is not necessary to maintain the motion. If the Earth’s surface is very flat and extended infinitely, objects that are pushed will not be impeded. Thus. the objects will continue to move. This kind of motion, however, is not evident in nature.
Horizontal Motion (Galileo Galilei)
Galileo performed experiments on uniformly accelerated motion using an inclined plane, and used the same apparatus to study projectile motion.
& Galileo was credited for quantifying the “rate of fall” by measurement of distance and time and plotting it graphically. He was able to slow down the “fall” using ramps rather than viscous materials as Aristotle did resulting to significantly different conclusions related to the “rate of fall”.
Projectile Motion (Galileo Galilei)
Initial motive force transfers to the medium initially surrounding the object a “power” to act as a motive force.
Air Flow
