Question

1. if i did not use any energy for the sand to pass through, it would be more like (active or passive transport).

Explanation:

Passive transport does not require energy input. Since no energy was used for the sand (representing particles) to pass through (like in a diffusion - like process shown in the diagram where particles move from an area of higher to lower concentration), it aligns with the definition of passive transport. Active transport, on the other hand, requires energy (usually in the form of ATP) to move substances against their concentration gradient.

Answer:

passive transport