Q: Rougher surfaces have more friction between them than smoother surfaces.  Having read the above passage, choose the right answer to the following question (choices are less or more ):   Eric rubs together tissue paper and then sandpaper. The smoother tissue paper has less or more friction than the sandpaper?
A: less


Q: Bigger atoms have more electrons.  Having read the above passage, choose the right answer to the following question (choices are more electrons or less electrons ):   As atoms get larger they are able to attract more electrons or less electrons?
A: more electrons


Q: The density of the atmosphere decreases with an increase in the height above sea level (altitude).  Having read the above passage, choose the right answer to the following question (choices are it would become less dense or it would become more dense ):   What would happen to the atmosphere as Jim climbed higher up a mountain it would become less dense or it would become more dense?
A: it would become less dense


Q: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.  Having read the above passage, choose the right answer to the following question (choices are greater or lesser ):   Jan lives in a great country and she is rich. Compared to another person in a poorer country, Jan will use an amount of energy that is greater or lesser?
A: greater