pounds per square inch
You can't measure a plant with water.
I don't think you can measure water. Sorry xD
Salinity is a measure of the saltiness of water.
To measure the volume of an irregular object that floats on water, you can use the water displacement method. Fill a container with a known volume of water, measure the initial water level, then place the object in the water and measure the new water level. The difference in water levels represents the volume of the object.
only the height of it. for example water in a container then, you can measure the depth
Submerge it in water and measure how much the water rises.
How can you measure water purity ?
drop it in water and measure how much water came up
Liters measure the volume of something so to measure the amount of water in the pool you'd use liters
H2o
A thermometer is used to measure the temperature of hot water.
A hygrometer is used to measure water vapor in the atmosphere. This instrument can measure humidity levels in the air to determine the amount of water vapor present.