Introduction
Have you ever wondered why plants need sunlight? This DIY experiment helps young learners explore the importance of light in plant growth by comparing two plants—one grown in sunlight and the other in darkness. It’s easy to set up, fun to observe, and teaches an essential concept of photosynthesis through real-life observation.
Materials Needed
- Two identical plant pots or recycled cups
- Potting soil or garden soil
- Two seeds (e.g., bean, mustard, or fenugreek)
- Water
- Sticky notes or paper labels (write “Sunlight” and “Darkness”)
- A sunny window or balcony
- A dark box or cupboard
- Notebook and pencil (for daily observation)
Step-by-Step Instructions
1. Fill the Pots with Soil
Scoop some soil into both pots. Fill them up to about 3/4th of the pot.
2. Plant the Seeds
Place one seed in each pot, pressing it gently into the soil. Cover with a thin layer of soil and pat lightly.
3. Water the Seeds
Add a little water to both pots. Make sure the soil is moist but not soaked.
4. Label the Pots
Stick a label on each pot: one as “Sunlight” and the other as “Darkness”.
5. Place the Pots
Put the “Sunlight” pot near a window or outside where it will get direct light.
Put the “Darkness” pot inside a box or dark cupboard.
6. Observe Daily
Check both pots every day. Water them equally and note down changes in a notebook. After 5–7 days, you’ll start to see a difference.
What You Learn (Science Behind It)
- Plants need sunlight for photosynthesis, the process where they convert light into energy.
- The plant in sunlight will grow tall with green leaves.
- The plant kept in darkness may sprout but will be pale, weaker, and eventually stop growing.
- This experiment shows how light is vital for healthy plant life.
Fun Tip or Extension
Take photos every day and create a growth diary! You can also try this experiment using colored filters (like red or blue plastic) to see how different kinds of light affect plant growth.
Be the first one to comment on this story.