PhySci (4th Quarter)

Question 1

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.

Answer 1

Tycho Brahe

Question 2

Emperor Rudolf II recommended _____________ to work for him as an assistant.

Answer 2

Johannes Kepler

Question 3

_______ was born to a poor German family and studied as a scholar at the University of Tübingen in 1589.

Answer 3

Johannes Kepler

Question 4

This table was the most accurate table that is known in the astronomical world

Answer 4

Rudolphine Tables

Question 5

He made the law of planetary motion

Answer 5

Johannes Kepler

Question 6

When Kepler tried to figure out Mars’ orbit, it did not fit the then-famous theory that a planet follows a circular path.

Answer 6

First law; The Law of ellipses

Question 7

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.

Answer 7

Second Law: The Law of Equal Areas

Question 8

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.

Answer 8

Second Law: The Law of Equal Areas

Question 9

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

Answer 9

Third Law: The law of harmonies,

Question 10

What are the 3 Law of planetary Motion

Answer 10

First Law; The Law of ellipses
Second Law; The Law of Equal Areas
Third Law; The Law of Harmonies

Question 11

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.

Answer 11

Johannes Kepler

Question 12

states that planets follow an elliptical orbit.

Answer 12

Law of ellipses

Question 13

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.

Answer 13

Motion

Question 14

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.

Answer 14

Vertical motion (Aristotle)

Question 15

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.

Answer 15

Horizontal motion (Aristotle)

Question 16

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.

Answer 16

Projectile Motion (Aristotle)

Question 17

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.

Answer 17

Vertical Motion (Galileo Galilei)

Question 18

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.

Answer 18

Horizontal Motion (Galileo Galilei)

Question 19

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”.

Answer 19

Projectile Motion (Galileo Galilei)

Question 20

Initial motive force transfers to the medium initially surrounding the object a “power” to act as a motive force.

Answer 20

Air Flow