Ques: Answer the question based on the following text. Question: Ivan yells across a canyon in the morning when it is cold and again later in the afternoon when it is hot. During which time did his voice travel the fastest morning or afternoon? Text: For a given medium such as air, sound has a slower speed at lower temperatures.
Ans: afternoon

Ques: Answer the question based on the following text. Question: Jim has never been a smoker. If he suddenly starts smoking cigarettes the amount of oxygen available in his lungs increases or decreases? Text: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.
Ans: decreases

Ques: Answer the question based on the following text. Question: If Milo increases the number of crests of his wave, what happens to the frequency of his wave increases or decreases? Text: Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.
Ans: increases

Ques: Answer the question based on the following text. Question: If America is a rich nation and China is a poor nation, then America's energy usage compared to China's is greater or smaller? Text: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.
Ans:
greater