Physics Quiz 1

Question 1

Archimedes

Answer 1

Archimedes had researched floating bodies figuring out Archimedes’ principle. This principle explains how upward buoyant force applied on a body in a fluid is parallel to the weight of the fluid displaced, explaining why it is harder to push an inflated ball in water and why people feel lighter in water.

Question 2

Ibn al Haytham

Answer 2

Ibn al Haytham, known as the father of optics, proved that light travels in a straight line in The Book of Optics. He had watched over a piece of paper with a hole in the middle and two lanterns on the opposite side of the room, figuring out that the light moved in the same line through the hole, explaining that light does not bounce off of our eyes, rather, the light travels from the object and pass into our eyes.

Question 3

William Gilbert

Answer 3

Proving that the earth itself is one giant magnet, William Gilbert explains himself by modeling the earth to the terrella. As Gilbert had moved a compass near the terrella, the compass had always pointed towards the magnetic pull, behaving similarly to the earth.

Question 4

Galileo Galilei

Answer 4

Galileo Galilei displayed that the connection of both distance and time can be expressed with the equation d∝at2. He also voiced that the laws of physics are identical in any circumstance that is traveling in a constant speed as well as a straight line, explaining relative motion.

Question 5

Isaac Newton

Answer 5

Publishing Principia, Newton had set down the foundations of classical mechanics, stating that gravity pulls masses together and includes his 3 laws of motion. Newton proved that planets orbits in an oval, elliptical, path through the inverse square law that ruled gravity.

Question 6

Thomas Young

Answer 6

Thomas Young had performed his double slit experiment by observing how water waves had acted when in a ripple tank, seeing how they had made a pattern of interference. Likewise, performing it with light and two small slits, he concluded that light is a wave due to the same patterns being shown.

Question 7

James Prescott Joule

Answer 7

James Prescott Joule had performed an experiment to measure the mechanical equal to heat, making a device where the handle was turned and two weights rose and fell, turning the paddle and water inside a container. After performing this experiment, he had discovered that energy didn’t disappear, rather, transferred into different forms; this had trailed into the first law of thermodynamics, ΔU=Q-W.

Question 8

Wilhelm Rontgen

Answer 8

Wilhelm Rontgen had started to look into vacuum tubes as their external effects when currents passed through them. He had seen a fluorescent effect on a screen in his lab and saw that a radiographic image of his skeleton was appearing on a platinocyanide screen, discovering the X-ray.

Question 9

mechanics

Answer 9

study of forces in motion

Question 10

optics

Answer 10

the study of light

Question 11

acoustics

Answer 11

the study of sound

Question 12

thermodynamics

Answer 12

study of heat and how it is transferred

Question 13

electricity and magnetism

Answer 13

how electrons move and magnetics fields

Question 14

relativity

Answer 14

physics of grand things (space, time, gravity, and light)

Question 15

quantum mechanics

Answer 15

physics of really small things. Things on scale are not as predictable as they are on the every day scale