Physics 6.2.7

Question 1

Explain how Radio Waves can be Produced.

Answer 1

Radio Waves can be Produced by Connecting an Antenna to a High Frequency Alternating Current Power Source.

Question 2

Explain the Link between the Oscillation of Charge in the A.C. Circuit & the Radio Waves Oscillations.

Answer 2

The Oscillation of Charge in the A.C. Circuit Produces Radio Waves with the Same Frequency of Oscillation.

Question 3

In the Transmitting Antenna: (2)

Answer 3

-The Charge from the Alternating Current Oscillates Up & Down the Antenna.

-This Produces Radio Waves that can be Absorbed by a Similar Aerial Some Distance Away.

Question 4

In a Receiving Aerial: (2)

Answer 4

-The Metal Aerial Absorbs the Radio Waves.

-This Creates an Alternating Current with the Same Frequency as the Transmitted Wave.

Question 5

In Order to Receive Radio Waves from a Certain Transmitter Antenna, the Receiving Aerial must have…

Answer 5

The Same Frequency of AC Current as the Corresponding Transmitter.

Question 6

How do you Make a Receiving Aerial Pick Up Different Radio Waves?

Answer 6

By Changing the Frequency of the AC Current so that it Matches that of the Corresponding Transmitter Antenna.