Problem: Given the question: Please answer correctly the following question related to the paragraph below. Which item is negatively charged? Jan, a middle school student, is curious to learn more about friction so she grabs two random objects and rubs them together. After rubbing them together, object B has transferred some of its electrons to object A. After observing this she starts to wonder more about electrons and decides she will ask her teacher more about it tomorrow at school. Hint: Electrons can be removed from some objects using friction, simply by rubbing one substance against another substance. There are many examples of objects becoming charged by friction, including a rubber comb through hair, and a balloon on a sweater. In both these instances, the electrons move from the second object to the first, causing the first object to become negatively charged and the second one positively charged. Friction between the tires on a moving car and the road cause the tires to become charged, and wind causes friction between clouds and air which causes clouds to become charged and can result in tremendous bolts of lightning.
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The answer is:
object A

Problem: Given the question: Please answer correctly the following question related to the paragraph below. Who is more at risk for developing lung cancer? Michael recently moved to Xin Jiang, where there is a large amount of air pollutants due to the chemical manufacturing industry there. Kevin, on the other hand, recently moved to Toronto which just finished a several month long tree planting initiative that has drastically lowered the amount of air pollutants in the city. Hint: Air pollution can also indirectly cause other health issues and even deaths. Air pollutants can cause an increase in cancer including lung cancer, eye problems, and other conditions. For example, using certain chemicals on farms, such as the insecticide DDT (dichlorodiphenyltrichloroethane) and toxic PCBs (polychlorinated biphenyl), can cause cancer. Indoors, pollutants such as radon or asbestos can also increase your cancer risk. Lastly, air pollution can lead to heart disease, including heart attack and stroke.
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The answer is:
Michael

Problem: Given the question: Please answer correctly the following question related to the paragraph below. Which student read less about higher rates of reaction? Two colleagues read about types of chemical reactions. Sean studied about the influence of temperature on chemical reactions. Gabe studied about other influencing factors. Hint: Raising the temperature of a chemical reaction usually results in a higher rate of reaction. When the reactant particles are heated, they move faster and faster. This results in a greater frequency of collisions. A more important effect of the temperature increase is that the collisions occur with a greater force and are thus more likely to surmount the activation energy barrier and go on to form products. Increasing the temperature of a reaction increases the number of effective collisions between reacting particles, so the reaction rate increases.
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The answer is:
Gabe