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).

Q: Paragraph: The farther the sound waves travel away from the source, the more spread out their energy becomes.
 Question: If Milo is listening to the radio and he moves closer to the radio in the room, what happens to the sound waves entering his ear? 
 Choices: A)they spread out less 
B)they spread out more

A: they spread out less
****
Q: Paragraph: If the gas is heated, the particles will move faster as they gain more energy.
 Question: If John heats a gas in his bunsen burner, what would happen to the gas particles? 
 Choices: A)they would move faster 
B)they would move slower

A: they would move faster
****
Q: Paragraph: Air pressure is less at higher elevations.
 Question: Air pressure will _____ when one goes up a mountain. 
 Choices: A)increase 
B)decrease

A:
decrease
****