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2. some animals communicate by emitting low frequency sound waves. when the animal emits a low frequency sound wave, what is the resulting pitch?
3. your friend tells you they think it would be cool to have band practice on the moon. is it possible to hear the band play on the moon? why or why not?
4. you have a frustrating day and just feel like screaming; you grab a pillow to scream into it. which interaction of sound would take place here, (reflection, refraction or absorption), and how did the sound waves move?
5. you are exploring in a cave and call out to one of your friends. you hear your echo. which interaction of sound (reflection, refraction or absorption) caused the echo and how did the sound waves move?

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms.

How can you use chemical equations to predict the products of the reaction you can carry out?

There are main groups in the modern periodic table of elements