Wednesday, 18 March 2015

Water Retention Capacity

Practical: Water Retention Capacity
 
Aim: To determine how much water there is in two soil samples.
 
Materials Used:
20ml of soil sample 1
20ml of soil sample 2
measuring cylinders
2 crucibles
Spatulas
lab scales
Newspapers
Permanent markers


Loamy soil is a better choice for growing plants than sand as loamy soil can hold more water. This is because loamy soil is made up of organic material while sand is just rocks. This is a good study as it shows which soil to use for growing plants with a certain amount of water needed as to not drown or thirst the plant of water.
The Loamy soil would have more water because it is made up of organic material whereas the sand soil has small broken down rock particles.







Soil sample
Mass of Crucible  1st reading of mass of crucible and damp soil before heating  2nd reading mass of crucible and soil after heating  3rd reading of mass and crucible and soil after heating  Mass of water in the soil (difference between the starting and end mass)
1
13.1
38.3
35,6
 34,7
21,6 
2
12.5
25.8
24,2
23.3
 10,8

 


No comments:

Post a Comment