(Originais Teachy 2023) - Question Easy of Sciences

Explain what is the relationship between frequency and wavelength and how this affects the propagation of sound and light waves. Then, provide examples of everyday situations where this can be observed and discuss the importance of these waves in our communication and daily life.

The lunar eclipse can also be called 'Blood Moon' due to its reddish color during the event. This coloration occurs due to the light from stars and planets passing through the Earth's atmosphere and reaching the lunar surface, being called diffuse light or twilight light. What are the main elements present in the Earth's atmosphere responsible for this coloration?

You must have noticed that the materials we use in our daily lives can change when placed in different situations. For example, water can change its form when heated to make tea, or what happens to fruit when left out of the refrigerator for too long. Think of a material you know and explain how it could change if placed in four different situations: (1) exposed to strong sunlight, (2) placed in the freezer, (3) mixed with another material that reacts with it, and (4) cut into very small pieces. Write about the changes this material could undergo and what causes this change, explaining what happens at the particle level of the materials.