easy-watermark domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/u223937191/domains/scienceworksheets.co.uk/public_html/wp-includes/functions.php on line 6170Practice Question
1. Explain how a transmission aerial is used to broadcast radio waves
A high freqency, alternating potential difference is applied across the transmitting aerial, this causes an alternating current to flow in the transmitting aerial.Â
This current will cause oscillations in charge which flow up and down the transmitting aerial, causing radio waves of the same frequency to be emitted.Â
2. Suggest why the sound heard from a radio would be similar to the sound being produced in the studio from where it is broadcast.
The sound wave produced from the radio will be of the same frequency as the sound that is being produced in the studio.
3. What is meant by the term oscillations?
Oscillations means changing
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans