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Vlad [161]
3 years ago
10

Conventional fossil fuels are harmful to the environment. Alternative solutions include using nuclear energy or solar energy. A

decision to opt for solar power over nuclear energy might be based on which of these facts?
Biology
2 answers:
Anna11 [10]3 years ago
6 0

Explanation:

Nuclear energy is created by the process of splitting atoms such as uranium atoms into smaller and lighter atoms and thereby converting the "lost" mass into heat. This lost mass is consequently used in production of electricity.

Solar Energy generation on the other hand is achieved by converting the radiation of the sun via solar panels and cells to electric current.

The disadvantages of nuclear energy over solar energy include the following :

a. SECURITY MATTERS : People who do not have very healthy intentions can easily target nuclear plants with the sole purpose of causing problems while uranium ( the chief ingredient for nuclear power generation) can be converted to nuclear weapons if the wrong people come in contact with it. This disadvantage obviously doesn't apply to solar energy generation

b. ACCIDENT: Nuclear energy isn't as safe as solar energy.

c. THE IMPACT ON THE ENVIRONMENT: Enrichment and mining of uranium are not processes that one can consider friendly to our environment. Open mining for uranium constitutes radioactive particles which can cause erosion and pollute water bodies or sources. This is not the case in solar power generation.

Leno4ka [110]3 years ago
5 0

Answer: solar energy is renewable and less radioactive

Explanation: The fact that solar energy is renewable and less radioactive gives it an edge over nuclear energy. Nuclear energy is generated from fission of nuclear elements which are rare and are not readily available.

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Flura [38]

PART 1


1. The answer is low frequency electromagnetic waves are able to go around obstacles due to their larger wavelengths. This characteristic of lower frequency waves is due to their ability to diffract around obstacles such as buildings and hills. Therefore, they transmit over long distances unlike high frequency electromagnetic waves.

2. One disadvantage is interference. Electromagnetic waves of the same frequency transmitted at the same time will interfere with one other and therefore the signal will be lost or scrambled. Other electromagnetic waves such as microwaves are affected (interfered with) by weather elements.

3. Analogue signals are continuous signals with wave-like properties while digital signals are discrete signals or pulse (ons (1s) and offs (0s) that represent bits). Analogue signal is represented by a sine-wave while digital signal is represented by discrete squares waves.

4. Digital signals are less immune to eavesdropping unlike analogue signals. Analogue signal is also more prone to distortion unlike digital signal. Digital signals transmit more data than analogue signals. Digital signal draw less energy to transmit compared to analogue signal.

5. Broadcasting of TV is nowadays using digital signals due to the high number of available channels. Computers and the interne utilize digital signaling to transmit data. Controls systems such as radar system also use aspects of analogue waves. Sensors also utilize analogue waves especially transducers such as seismology equipment.


PART 2


1. One way is by sending radio waves to probes sent out in space to give them commands during exploration. Radio telescopes also pick up naturally-occurring radio waves from space and analyze the data to make conclusions about space and the astronomical objects.

2. Radio waves are used in communication by transmitting data over long distances. One example is its use TV transmission. Another is through military defense of airspace. The radio waves are used to detect enemy intrusion into restricted airspaces using radar.

3. It is common that signal from the environment will be in analogue signal format. The conversion to digital signals allows for the digital equipment in the telescope to interpret and analyze the data. Telescopes prefer digital equipment because they consume less power, handle more data, and are less prone to intrusion, and distortion, hence more secure to analogue equipment.



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3 years ago
Read 2 more answers
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