From where to plants get their mass?

This topic has 1 reply, 2 voices, and was last updated 1 week, 4 days ago by Cosmo1718.

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- January 21, 2020 at 3:21 pm #8228
  
  Bernard Nebel
  Keymaster
  
  Thanks “Starryfields”! The following is a fun video demonstrating that many people have no idea (or misconceived ideas) about where a tree’s mass comes from. Starting with Von Helmont’s (mid 1600s) experiment proving that it cannot come from soil, it goes on to show that it comes from carbon dioxide in the air via the process of photosynthesis. (water + carbon dioxide >light energy> sugar + oxygen)
  
  https://sites.google.com/site/experimentsinphotosynthesis8b/jan-van-helmont
- February 10, 2025 at 8:29 pm #9838
  
  Cosmo1718
  Participant
  
  Thanks for this Dr. Nebel! The link in your description was broken, however, it did lead to us “googling” Jan Van Helmont. I came across this video lesson which my children found enjoyable. We followed along and added this drawing to our science journal.
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