A trapezium.
Midline SAGITTAL
That is called a cross-section.
This is called a sagittal plane if divided this way with symmetrical left and right halves. If the section produces asymmetrical halves, this is a parasagittal section.
It is the water column.
A 2D representation of a square-based pyramid is called a square pyramid net or a square pyramid template.
The sagittal plane is a vertical plane through the longitudinal axis dividing the body into left and right portions. If the animal is bisected straight down the midline, the section is called a "midsagittal" section. If the animal is sectioned away from and lateral to the midline, the section is referred to as "parasagittal".
This section of the ocean from floor to surface is called the water column.
The answer is Soil Profile------------------------------------
the sum of all vertical forces is called shear force
Convection
The vertical distance between a wave's midpoint and its crest or trough is called is peak amplitude. This differentiates this measurement from the vertical distance from a crest to a trough, which is called its peak-to-peak amplitude.
Yes it's called a vertical labret