posted by Taylor .
a few questions;
11 letters. observations involving verbal descriptions.
20 letters. the last one being t. an experiment where only one variable is changed and all others are kept constant.
16 letters. the first being s, the fourteenth being h. An organized plan to solve problems.
12 letters. the fifth being t. observations involving descriptions based on instrument measurements.
10 letters. the first being i. devices that increase the five senses' abilities to obtain information.