Pleas help me with my homework

explanation:

specific heat is the amount of heat required to raise the temperature of a unit mass of a substance.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!