Answer:
difference:
1. The generation mechanism is different, the mechanical wave is generated by mechanical vibration; the electromagnetic wave generation mechanism is also different, there is the periodic movement of electrons (radio waves); the outer electrons with atoms are generated after being excited (infrared, visible, ultraviolet) The inner electrons with atoms are generated after excitation (roentgen rays); the nuclei with atoms are generated after excitation (gamma rays).
2. The propagation mechanism is different: the mechanical interaction between the particles and the alternating induction of the electromagnetic field.
3. Mechanical waves have both transverse waves and longitudinal waves; electromagnetic waves are material waves and belong to transverse waves.
4. The influence of the medium on the propagation speed is different
Explanation:
https://qiaodahai.com/similarities-and-differences-between-mechanical-waves-and-electromagnetic-waves.html
Don't Panic
Avoid injury
Salvage all you can
Obtain a source of water
Build a shelter
Find food
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Answer:
Water
Explanation:
Its water because water has many forms and all those forms are being converted into other forms of water during the cycle
Answer: Metalloid and non-metals not only form covalent bonds by sharing, but can form ionic bonds either by losing or gaining electrons
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Explanation:
