As a river overflows its channel, sediment is deposited along the channel banks. What type of sediment is deposited first? What type is deposited last?
What will be an ideal response?
Answer: Large and heavy sediment particles are the first to be deposited since they are too heavy to remain with the water flow. Small sediment particles, able to remain in the flow, are the last to be deposited.
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Shown below are the four terrestrial planets of our solar system. Assume that all the planets started out equally hot inside. Rank the planets based on their expected cooling rates, from fastest cooling to slowest cooling.
A rainbow shows separate colors of the spectrum because, at raindrop surfaces,
A. blue light is bent more than red light. B. all colors are bent the same, hence the separation. C. green light is bent more than blue light. D. red light is bent more than green light.
Most white dwarfs
A) have relatively hot surfaces. B) have relatively cool surfaces. C) evolve into black holes. D) are about as dense as their parent stars.
The chromosphere is faint because of its low density
Indicate whether the statement is true or false