*Question*
Use information from the paragraph to answer the question. Question: If a device were to become less efficient, it would produce more or less usable energy? Paragraph : The more efficient a device is, the greater the percentage of usable energy it produces.
**Answer**
less

*Question*
Use information from the paragraph to answer the question. Question: Ian is digging in his garden, and admires the shiny pebbles sitting in the yard, as he digs a hole and finds more rocks, he knows that they are younger or older? Paragraph : Older rocks are at the bottom and younger rocks are at the top.
**Answer**
older

*Question*
Use information from the paragraph to answer the question. Question: Mona is designing a car in a factory. If she decides to remove cylinders from the car's engine, what happens to the power that engine can output increased or decreased? Paragraph : The more cylinders a car engine has, the more powerful its engine can be.
**Answer**
decreased

*Question*
Use information from the paragraph to answer the question. Question: Will adds salt to the pot of water. The water's volume is now less dense or denser? Paragraph : If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.
**Answer**
denser