Diffusion Worksheets - Free Printables - Free Printable

Here are the answers to your activity on diffusion.

1. Identify and name the natural phenomenon happening.
The diagram shows particles moving from an area where they are crowded (high concentration) to an area where there is more space (low concentration) until they are spread out evenly. This process is called Diffusion.

2. See the diagram below and identify the type of diffusion.
* Left Diagram: The particles are moving directly through the cell membrane without any help. This is called Simple Diffusion.
* Right Diagram: The particles need help from "Channel proteins" and "Carrier proteins" to get across the membrane. This is called Facilitated Diffusion.

3. Read the examples below and tick the one that describes diffusion.
* a) Perfume spreading through the air is gas particles moving around. This is diffusion.
* b) Cooking smells traveling through walls/air is also gas particles moving. This is diffusion.
* c) Fingers looking like prunes happens because water moves into your skin cells. This is a specific type of diffusion called *osmosis*.

Since both (a) and (b) are perfect examples of standard diffusion, you should tick those.

Final Answer:
1. Diffusion
2. Left: Simple Diffusion | Right: Facilitated Diffusion
3. Tick: a) and b)