Ch. 9 Physics
a transfer of a disturbance from one point to another without any corresponding transfer of matter.
A "wave" could best be defined as
radiation from the sun separates chlorofluorocarbon, resulting in free chlorine
A key step in the destruction of ozone by chlorofluorocarbons is
a photon
A particle of light is called
a two-dimensional wave
A water wave spreading out in a circle across the surface of a pond is an example of
Yes, because the water itself doesn't go anyplace but simply oscillates up and down.
Are small ripples sent out across the surface of a lake truly "waves", as that word is used in physics?
an electromagnetic wave whose frequency is 90 × 106 vibrations/second.
Talk-radio station KOOK is at approximately 90 megahertz on the radio dial. This means that KOOK broadcasts
a disturbance 1 cm deep
Two brief waves or "pulses" are sent down a rope, in opposite directions, as shown in the figure. Pulse A is 1 cm in height, and pulse B is 2 cm in depth. When they meet, they will create
a sports wave [called "the wave"] at a sports arena
Which of the following are true waves, as the word is defined in physics?
Actually all of these travel at light speed. Answers: light X-rays infrared waves radio waves
Which of the following does not travel at light speed?
Electricity from a nuclear power plant
Which of these, if used to replace gasoline as an automobile fuel, would not contribute to global warming?
gamma
Which part of the electromagnetic spectrum has the shortest wavelength?
Max Planck
Who discovered that radiation is quantized?
Because CO2 absorbs, or traps, infra-red radiation
Why might excess CO2 in the atmosphere heat up the earth?
higher-energy electrons orbiting the nucleus in atoms
X-ray radiation typically comes from
