As thunder travels away from a lightning channel, the amplitude (loudness) of the sound by as the distance from the channel doubles.

The sentence can be completed as follows:
"As thunder travels away from a lightning channel, the amplitude (loudness) of the sound DECREASES by A FACTOR 4 as the distance from the channel doubles."

In fact, the intensity of a sound wave follows an inverse square law: it means it is inversely proportional to the square of the distance, , where r is the distance from the source. We see from the formula that, if we double the distance, the intensity gets a factor , which means that the intensity decreases by a factor 4.

The sample with the lowest specific heat capacity will have the greatest temperature increase. in this case, it would be platinum.

Answerthe global climate during the paleogene departed from the hot and humid conditions of the late mesozoic era and began a cooling and drying trend which dispite having been periodically disrupted by warm periods such as the paleocene-eocene thermal maximum, persists today;