Ques:The upper rock layers are much younger. Sarah is looking at layers of rock on a cliff face. She can see that the rock at the very bottom of the cliff are older or younger?

Ans:older
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Ques:The more tightly packed the particles inside the material are, the more dense we say they are. If Mona is unpacking coffee into a tin and she continues to remove more coffee, what happens to the density of the coffee inside the tin increases or decreases?

Ans:decreases
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Ques:At higher temperatures, particles of reactants have more energy, so they move faster. On a summer day, a person notes during a science project that the reactants have more energy, so they are now moving faster or slower?

Ans:faster
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Ques:The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited. Wendy turned the hose from full blast to half power. This makes the stream more or less likely to be able to deposit large rock particles?

Ans:
less
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