RC Moocs Quiz

As compared to sound waves frequency of radio waves is

• lower

• higher

• equal

• may be higher or lower

The acronym FM stands for

• Frequency modes

• Filter modulation

• Frequency modulation

• Filter methodology

At night, AM transmissions can be received from great distances because

• There are fewer stations broadcasting

• There is less traffic on the roads to cause interference

• The dissipation of the 'D' layer of the ionosphere

• All of the above

mass media is following ethics in reporting

• True

• False

• Both of them

• None of the above

Modulation is done in

• Transmitter

• Radio receiver

• Between transmitter and radio receiver

• None of the above

Because of rock samples, scientists found the composition of the moon similar to Earth's ____.

• mantle
• crust
• atmosphere
• core

What are the three steps of the current explanation for the formation of the moon?

• impact, ejection, formation
• impact, explosion, creation
• explosion, ejection, formation

All of the ______ have multiple moons.

• gas giants
• inner planets

Which planet has the two moons, Phobos and Deimos?

• Mars
• Mercury
• Earth
• Saturn