You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
--------
Question: Paragraph: For a given medium such as air, sound has a slower speed at lower temperatures.
 Question: If Mary is blowing an air horn underwater and she lowers the temperature of the water, what will happen to the speed of the sound waves generated by the air horn? 
 Choices: A)increase 
B)decrease

Answer: decrease


Question: Paragraph: At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.
 Question: If Mona is comparing two different reactants to use for starting her fire and she realizes that one reactant has a lower temperature then the other, what does that tell her about the amount of energy it contains? 
 Choices: A)higher 
B)lower

Answer: lower


Question: Paragraph: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.
 Question: A person moving south from the North Pole will receive _____ direct sunlight. 
 Choices: A)more 
B)less

Answer:
more