1140 Definitons

Question 1

Particle theory

Answer 1

Isaac Newton

Question 2

5.80 x10^-7 m

Answer 2

wavelength of yellow light

Question 3

visible spectrum

Answer 3

includes only light waves

Question 4

electromagnetic spectrum

Answer 4

includes ultraviolet waves, light waves, infrared waves, and others

Question 5

observed the eclipse of Jupiter’s moon Io to determine the speed of light

Answer 5

Olaus Roemer

Question 6

showed that light travels 10,000 times faster than Earth in its orbit

Answer 6

James Bradley

Question 7

used a rotating toothed wheel to measure the speed of light

Answer 7

Armand Fizeau

Question 8

used a rotating plane mirror to measure the speed of light

Answer 8

Jean Foucault

Question 9

received a Nobel price in 1907 for studies of light

Answer 9

Albert Michelson

Question 10

invented the vacuum bottle in 1892

Answer 10

James Dewar

Question 11

waves arriving out of phase and cancelling each other out

Answer 11

destructive interference

Question 12

waves arriving in phase and strengthening each other

Answer 12

constructive interference

Question 13

a device that measures extremely small distances with interference of light

Answer 13

interferometer

Question 14

invented the interferometer

Answer 14

Albert Michelson

Question 15

light emitted at random and in all direction

Answer 15

scattered light

Question 16

light vibrating in a single plane

Answer 16

polarization

Question 17

first to investigate static electricity

Answer 17

Thales of Miletus

Question 18

insulators

Answer 18

nonmetal poor conductors

Question 19

good conductors

Answer 19

silver, gold, copper

Question 20

neither a good conductor nor a good insulator

Answer 20

semiconductor

Question 21

formulated three laws of static electricity

Answer 21

Benjamin Franklin

Question 22

measured forces between charged bodies

Answer 22

Charles de Coulomb

Question 23

Good insulating materials

Answer 23

mica, porcelain, glass

Question 24

three ways an object can acquire a static electrical charge

Answer 24

friction, induction, direct contact

Question 25

Electric charge can neither be created nor destroyed

Answer 25

law of conservation of charge

Question 26

an object that can accept or supply electrons

Answer 26

ground

Question 27

a device that stores static charges

Answer 27

Leyden jar

Question 28

a positively charged conductor, a negatively charged conductor, and uncharged insulating material in between

Answer 28

capacitor

Question 29

ability to hold a charge

Answer 29

capacitance

Question 30

equal to one coulombs of charge for every volt of potential difference

Answer 30

one farad of capacitance

Question 31

a device that produces a static electrical charge

Answer 31

an electrostatic generator

Question 32

an electrostatic generator that is capable of building extrememely high electric potentials

Answer 32

Van de Graaff generator

Question 33

invented the first electrostatic generator

Answer 33

Otto van Guericke

Question 34

measures the electric potential of a charged body

Answer 34

electroscope

Question 35

invented the telegraph, the first invention with a useful purpose for electricity

Answer 35

Samuel F.B. Morse