This experiment is often done and is always a lot of fun. During this science lesson it promoted a lot of discussion about what we thought was happening.
What to do:
- Stick a candle onto a plate with plasticine.
- Pour some coloured water onto the plate.
- Light the candle.
- Carefully lower a jar over the top.
- Observe what happens.
What we observed:
- The water was slowly sucked into the jar.
- The candle slowly went out.
- When the candle went out the smoke went straight up.
- When the candle went out lots of water was quickly sucked up into the jar.
- There were some bubbles around the jar as the water was sucked in.
![](http://3.bp.blogspot.com/-ufL7Zw6_AHY/U5QL2tiknVI/AAAAAAAAA5c/mxvuNijwruQ/s1600/IMG_2711.jpg) |
Carefully lower the jar over the candle. |
![](http://2.bp.blogspot.com/-LWVNUYZyH9E/U5QLtEzYJRI/AAAAAAAAA5U/IpgqTpU_pbI/s1600/IMG_2712.jpg) |
What can you see happening? |
![](http://4.bp.blogspot.com/-NGmYuWAAT_c/U5QLqV_83AI/AAAAAAAAA5M/SJzej29MfdQ/s280/IMG_2713.JPG) |
This small candle burnt for a long time. |
![](http://3.bp.blogspot.com/-U34_XaJusBw/U5QL-oZhZJI/AAAAAAAAA5k/T6ZqSrJHnfs/s280/IMG_2714.JPG) |
Wow - lots of the water has been sucked up into the jar. |
![](http://1.bp.blogspot.com/-i-flksCIsPo/U5QMF7k6uoI/AAAAAAAAA5s/cxEGHDPZimk/s1600/IMG_2715.jpg) |
This little candle worked the best. |
![](http://3.bp.blogspot.com/-MWfV2eC5TkA/U5QMNLYwbQI/AAAAAAAAA58/Gv5ynF507ow/s280/IMG_2718.JPG) |
We could see some bubbles around the jar. |
Click on this
link to find out why this happens.
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