1 / 4

vacuum flask

What happens and why?. Flask A. Flask B. thermometer. cotton wool. dead seeds. l iving seeds. vacuum flask. Method. The experiment was set up as follows. In flask A seeds were boiled for 10 minutes, allowed to cool and then soaked in disinfecting solution for 10 minutes.

dugan
Download Presentation

vacuum flask

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What happens and why? Flask A Flask B thermometer cotton wool dead seeds living seeds vacuum flask

  2. Method • The experiment was set up as follows. • In flask A seeds were boiled for 10 minutes, allowed to cool and then soaked in disinfecting solution for 10 minutes. • In flask B seeds were soaked in disinfecting solution. • The flasks were left in the same place. • After two days the temperature inside the flasks was recorded.

  3. Results

  4. Discussion • 1. Why were the seeds in flask A boiled? • 2. Both sets of seeds were soaked in disinfectant. Why is this necessary? • 3. How can you explain the difference in temperature between the two flasks? • 4. Why was it necessary to use insulated (vacuum) flasks for the experiment? • 5. What factors were controlled to ensure the experiment was a fair test?

More Related