Which of the following is a result of the greenhouse effect? the greenhouse effect is causing the sea level to rise. the greenhouse effect is melting the polar ice caps. the greenhouse effect keeps the earth from becoming too hot during the day and too cold at night. the greenhouse effect is ruining our environment.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Why do astronauts in the space shuttle weigh less?

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.