What are the properties of a thermal insulator ​

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

In which of these cases are the two wave points considered to be in phase with each other?