As you climb a mountain, you can expect the air temperature to decrease by 6.5 degrees c for every 1000 meters you ascend. this is called the standard (average) lapse rate. if your went hiking and started out at 3,000 meters, with the air temperature at 30 degrees c; what would the air temperature be like at the peak- 7,000 meters?

a. -4 degrees c
b. 0 degrees c
c. 4 degrees c
d. 6.5 degrees c

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

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.

When an object is heated it contracts. a. true b. false