[DOC] [TLE] Why Do Radio Signals Travel Farther at Night than in the Day? [PAR] Jan 27, 2015 ... Not all radio waves travel farther at night than during the day, but some, short ... 
bounce back and forth between the ground and the ionosphere, ... Further, 
because the atmosphere is significantly less dense here ... As a result, at night, 
AM stations in the United States typically reduce their power, go off the... [DOC] [TLE] Why do you hear some radio stations better at night than in the day ... [PAR] Have you ever noticed a difference in the quality of radio signals depending on ... 
Certain radio stations, however, especially the short-wave and AM bands, can ... 
So the waves bounce between the ground and the ionosphere and make their 
way ... You can pick up some radio stations better at night because the reflection
... [DOC] [TLE] Skywave - Wikipedia [PAR] Radio waves (black) reflecting off the ionosphere (red) during skywave 
propagation. In radio communication, skywave or skip refers to the propagation of 
radio waves reflected or ... It is mostly used in the shortwave frequency bands. As 
a result of skywave propagation, a signal from a distant AM broadcasting station,
... [DOC] [TLE] Why Do Radio Signals Travel Farther at Night Than in the ... - Gizmodo [PAR] Jan 27, 2015 ... Not all radio waves travel farther at night than during the day, but some, short ... 
bounce back and forth between the ground and the ionosphere, ... Further, 
because the atmosphere is significantly less dense here ... As a result, at night, 
AM stations in the United States typically reduce their power, go off the... [DOC] [TLE] AM Radio Signals - Day and Night - Making It Up [PAR] Sep 24, 2015 ... Why can you hear different AM radio signals at night? ... There are over 100 
channels in the AM broadcast band. ... as sky waves can actually bounce off the 
ionosphere and come back to earth. And, they do so at a much greater distance 
than the ground wave covers. ... Clear, Regional and Local Channels. [DOC] [TLE] JetStream - An Online School for Weather Learning Lesson: AM in ... [PAR] Back: The Ionosphere ... Radio signals bounce off the ionosphere all the time. ... 
During the daytime, the distance the AM radio signal travels is the distance the ... 
Because of the absorption of the signal, there are also more radio stations ... 
However, there are high power clear channel stations that can broadcast all night
. [DOC] [TLE] NWS JetStream Learning Lesson: AM in the PM [PAR] Demonstrate that AM radio signals can travel many 100's of miles at night. ... (
Most will be faint but the reception is usually clear enough to understand.) ... 
Because of the absorption of the signal, there are also more radio stations ... and 
the transmitted signal can then bounce off the ionosphere and return back to the 
earth. [DOC] [TLE] AM, FM Radio Waves and Sound - CyberCollege [PAR] May 28, 2013 ... First, let's look at the AM radio band (group of frequencies). ... How far an AM 
station's signal travels depends on such things as the station's ... The ionosphere 
is much more effective in reflecting these radio waves at night. ... Because of their 
higher frequency ionospheric refraction doesn't appreciably affect... [DOC] [TLE] What Are Radio Waves? - Live Science [PAR] Apr 6, 2015 ... Radio waves are a type of electromagnetic radiation. ... Most radio in these bands 
uses amplitude modulation (AM) to impress an ... Throughout the world, there are 
hundreds of shortwave stations, ... Shortwave stations can be heard for 
thousands of miles because the signals bounce off the ionosphere and... [DOC] [TLE] The Ionosphere - Radio Jove [PAR] The Effects of Earth's Upper Atmosphere on Radio Signals ... On clear days with 
perfect conditions signals as high as 300GHz have been detected. ... This is what 
gives the Ionosphere its name and it is the free electrons that cause ... the low 
frequency waves reflect off the ionosphere and essentially "skip" around

Question: Distant radio stations on this band are clearer at night because their signals bounce off the ionosphere
Answer: AM