For a given medium, sound has a slower speed at lower temperatures. Having read the above passage, choose the right answer to the following question (choices are cold. or hot ): When Dave screams outside he notices that the sound travels at different speeds in different temperatures. The sound travels slower when it is cold. or hot?
cold.

The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited. Having read the above passage, choose the right answer to the following question (choices are smaller particles would be deposited or larger particles would be deposited ): If the rate of flow in a river were reduced, what would happen to the size of sediment particles being deposited on the riverbed smaller particles would be deposited or larger particles would be deposited?
smaller particles would be deposited

Q: Warming up exercises increases the blood flow to the muscles and increases the heart rate. Having read the above passage, choose the right answer to the following question (choices are decreases or increases ): Tony wanted to prevent cramps by not warming up. This decreases or increases blood flow to his muscles?
A: decreases

Question: The more mass a moving object has or the faster its moving, the greater its momentum. Having read the above passage, choose the right answer to the following question (choices are boulder or beach ball ): A heavy boulder begins rolling down a hill and a beach ball rolls down alongside it. Which object will have less momentum as it rolls boulder or beach ball?
Answer: beach ball

*Question*
With higher frequencies, the microwaves also have more energy. Having read the above passage, choose the right answer to the following question (choices are more energy or less energy ): As waves on the ocean shrink in size and number they have more energy or less energy?
**Answer**
less energy

(Question)
Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature. Having read the above passage, choose the right answer to the following question (choices are lower or higher ): Dana is testing alkanes to see how they boil. She first heats up alkanes with more carbon atoms, and then some with fewer. The alkanes with more carbon atoms have a boiling point, compared to the other, that is lower or higher?
(Answer)
lower