Exploring Physics Chapters 11-14 Flashcards
The Heisenberg uncertainty principle states that the precise position, mass, and ___ cannot be determined exactly.
velocity
proposed matter waves and calculated their wavelengths
Louis de Borglie
The advantage of an electromagnet is that it
it can be turned off and on
Which one has a wave long enough to be detected, an electron or a baseball?
electron
The total mass after a nuclear reaction is ___ than the total mass before the reaction.
less
The first person to state that uranium could undergo fission and produce a self-sustaining chain reaction was
Lisa Meiter
Enrico Fermi discovered that the best particles to cause the break-up of a nucleus were
neutrons
The scientist who developed four equations that summarized electromagnetism was
James Clerk Maxwell
The purpose of a moderator is to
slow neutrons
n the black box experiment, the amount of ultraviolet light was ___ than predicted.
far less
developed a model of the atom and electron orbits
Niels Bohr
Label the elementary particles of an atom
Rank theses waves in order from lowest frequency (longest wavelength) to highest frequency (shortest wavelength):
blue visible light
AM radio raves
X rays
infrared light
AM radio waves
infrared light
blue visible light
X rays
The period 1895–1905 is known as
the second scientific revolution
explained black body radiation by using energy quanta
Max Planck
The ground state, or lowest orbit of an electron, corresponds to its
fundamental frequency.
The first particle shown to have a wave nature was
an electron
developed the uncertainty principle
Werner Heisenberg
Which is more difficult to magnetize, soft iron or steel?
steel
The M in AM and FM stands for
modulation
Which of these is not made of smaller particles: an electron, a hydrogen atom, a neutron, or a proton
an electron
Albert Einstein won the Nobel Prize in physics because of his research papers about
photoelectric effect
The first scientist to generate electromagnetic waves was
Rudolf Hertz
Faraday succeeded in showing a connection between
chemistry and electricity
electricity and magnetism
magnetism and light
the splitting of an atom into smaller parts is nuclear
fission
The ___ radio band is prone to electrical interference.
AM
When magnetic domains become jumbled, magnetism is
lost
An ultraviolet quantum has ___ energy than an infrared quantum.
more
