It means that you consider the elements as a list organized by atomic number, the property is seen to repeat over and over as you move through that list.
B: Extension Lines! You could have just searched this up on google
The body system on the chart
Answer:
Wave speed, frequency and wavelength in refraction
Explanation:
The diagram shows that as a wave travels into a denser medium, such as water, it slows down and the wavelength decreases. Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. Hope this helps :>
