Understanding Diffusion
A Grade 4 science worksheet introducing the concept of diffusion through various question types.
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Understanding Diffusion
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Read each question carefully and answer to the best of your ability. Good luck!
1. What is diffusion?
When things stay in one place
When particles spread out from a crowded area to a less crowded area
When things get colder
When things get hotter
2. Which of these is an example of diffusion?
A ball rolling down a hill
Smelling cookies baking from another room
A plant growing towards the sun
Water freezing into ice
3. Diffusion happens when particles move from an area of high concentration to an area of low .
4. When you spray air freshener, the smell spreads throughout the room because of .
5. Diffusion only happens in liquids.
True
False
6. Heat can make diffusion happen faster.
True
False
7. Describe in your own words what happens when a drop of food coloring is added to a glass of water.
Observe the image below, which shows how molecules spread out.
8. What do you notice about the movement of the blue particles in the picture?