*Question*
Use information from the paragraph to answer the question. Question: When water is eroding down a river it will do more cutting if it is low or high? Paragraph : In erosion, the higher the elevation, the farther the stream is from where it will reach base level and the more cutting it has to do.
**Answer**
high

*Question*
Use information from the paragraph to answer the question. Question: Warm air is able to fill more space than cold air because it is more dense or less dense? Paragraph : Warm air is less dense than cool air, so it rises higher in the troposphere.
**Answer**
less dense

*Question*
Use information from the paragraph to answer the question. Question: On a winter day, a person notes during a science project that the reactants have less energy, so they are now moving faster or slower? Paragraph : At higher temperatures, particles of reactants have more energy, so they move faster.
**Answer**
slower

*Question*
Use information from the paragraph to answer the question. Question: If Jim downgrades his computer to a less powerful model, what happens to the amount of work it can perform it can perform more work then before or it can perform less work then before? Paragraph : Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time.
**Answer**
it can perform less work then before