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Chapter 15 Electromagnetic Waves
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Terms in this set (14)
Electromagnetic wave
A wave that can travel through empty space and through matter.
radiant energy
energy carried by an electromagnetic wave
electromagnetic spectrum
The entire range of electromagnetic waves with different frequencies and wavelengths
gamma ray
A high-energy electromagnetic wave with a shorter wavelength and higher frequency than all other types of electromagnetic waves.
infrared waves
an electromagnetic wave that has a wave length shorter than a microwave but longer than light
Microwave
A low-frequency low-energy electromagnetic wave that has a wavelength between about 1 mm and 30 cm
radio waves
A low-frequency low-energy electromagnetic wave that has a wavelength longer than about 30 cm
ultraviolet wave
electromagnetic wave with a slightly shorter wavelength and higher frequency than light and carries enough energy to cause chemical reactions
X-ray
A high-energy electromagnetic wave that had a slightly shorter wavelength and higher fry than an ultraviolet wave
amplitude modulation
a change in the amplitude of a carrier wave
Broadcasting
The use of electromagnetic waves to send information in all directions
Carrier wave
An electromagnetic wave that a radio or television station uses to carry its sound or image signals
frequency modulation
a change in the frequency of a carrier wave
Global Positioning System (GPS)
A worldwide navigation system that uses satellite signals to determine a receivers location
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Verified questions
CHEMISTRY
Which of the following orbital designations are incorrect: 1s, 1p, 7d, 9s, 3f, 4f, 2d?
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There are $2.60 \times 1015$ short tons of oxygen in the atmosphere ( 1 short ton = 2000 lb). How many metric tons of oxygen are present (1 metric ton = 1000 kg) ?
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Calculate the difference in slope of the chemical potential against pressure on either side of (a) the normal freezing point of water and (b) the normal boiling point of water. The mass densities of ice and water at $0^{\circ} \mathrm{C}$ are $0.917\ \mathrm{g}\ \mathrm{cm}^{-3}$ and $1.000\ \mathrm{g}\ \mathrm{cm}^{-3},$ and those of water and water vapour at $100^{\circ} \mathrm{C}$ are $0.958\ \mathrm{g}\ \mathrm{cm}^{-3}$ and $0.598\ \mathrm{g}\ \mathrm{cm}^{-3},$ respectively. (c) By how much does the chemical potential of water vapour exceed that of liquid water at 1.2 atm and $100^{\circ} \mathrm{C}?$
CHEMISTRY
Given the reaction $\mathrm { A } ( g ) + \mathrm { B } ( g ) \rightleftharpoons \mathrm { C } ( g ) + \mathrm { D } ( g ) ,$ consider the following situations: i. You have 1.3 M A and 0.8 M B initially. ii. You have 1.3 M A, 0.8 M B, and 0.2 M C initially. iii. You have 2.0 M A and 0.8 M B initially. After equilibrium has been reached, order i-iii in terms of increasing equilibrium concentrations of D. Explain your sequence. Then give the order in terms of increasing equilibrium concentration of Band explain.
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