Problem: I can use this background: During late adulthood, the risk of developing diseases such as cardiovascular diseases and cancer continues to rise. Most people also have a decline in strength and stamina. Their senses may start failing, and their reflex time typically increases. Their immune system also doesn’t work as well as it used to. As a result, common diseases like the flu may become more serious and even lead to death. The majority of late adults develop arthritis, and as many as one in four develop Alzheimer’s disease.  Now, I have a new situation: Margaret is a sophomore in high school who just started her Spring break. With a week off from school, her family is spending some time driving out of state to visit her grandma, Kathy, who has a cabin up in the snowy mountains. Margaret always enjoys spending time with her grandma because she has interesting stories and makes some of the best pie around. Also, they always go skiing when visiting the cabin so Margaret is excited for that.  Answer this question please: Who would be more likely to get lost on the mountain?

A: Kathy


Problem: I can use this background: As for the public health or food safety concern, organic foods are intended to be healthy, free of contaminations and free from agents that could cause human diseases. Organic milk is meant to have no chemical residues to consumers, and the restrictions on the use of antibiotics and chemicals in organic food production has the purpose to accomplish this goal. Although dairy cows in both organic and conventional farming practices can be exposed to pathogens, it has been shown that, because antibiotics are not permitted as a preventative measure in organic practices, there are far fewer antibiotic resistant pathogens on organic farms. This dramatically increases the efficacy of antibiotics when/if they are necessary.  Now, I have a new situation: Two friends decided to lose weight. Tammy started eating healthier, she only used organic products. Fay reduced the number of calories, but still ate conventional food and produce.  Answer this question please: Which friend ate less food from farms with fewer antibiotic resistant pathogens?

A: Fay


Problem: I can use this background: Changes of state from solid to liquid and from liquid to gas occur when matter gains energy. The energy allows individual molecules to separate and move apart from one another. It takes more energy to bring about these changes of state for polar molecules. Although hydrogen bonds are weak, they add to the energy needed for molecules to move apart from one another, so it takes higher temperatures for these changes of state to occur in polar compounds. This explains why polar compounds have relatively high melting and boiling points. The Table below compares melting and boiling points for some polar and nonpolar covalent compounds.  Now, I have a new situation: Mike was interested in the science behind polar compounds. To that end, he collected two compounds, compound A and compound B. Compound A was a polar compound, but compound B was a nonpolar compound. He then conducted two tests, case A and case B. In case A, he changed the state of a polar compound from solid to liquid. And, in case B, he changed the state of a nonpolar compound from solid to liquid.  Answer this question please: Which compound would have higher boiling point, compound A or compound B?

A: compound A


Problem: I can use this background: What does popping bubble wrap have to do with science? Actually, it demonstrates an important scientific law, called Boyle’s law. Like other laws in science, this law describes what always happens under certain conditions. Boyle’s law is one of three well-known gas laws, which state the relationships among temperature, volume, and pressure of gases. (The other two gas laws are Charles’ law and Amontons’ law.) According to Boyle’s law , if the temperature of a gas is held constant, then decreasing the volume of the gas increases its pressure—and vice versa. That’s what happens when you squeeze the bubbles of bubble wrap. You decrease the bubbles' volume, so the air pressure inside the bubbles increases until they pop.  Now, I have a new situation: Except for their color, there are two identical inflatable chairs in a grade school classroom that the children can use during free time. Today, Patrick and Mark, who weighs much more than Patrick, are allowed to use the chairs. Patrick chooses to sit on the red chair, and Mark sits on the green chair. The boys have fun reading books while they sit on their comfortable inflatable chairs.  Answer this question please: Which chair has a higher air pressure?

A:
green chair