Providing information, activities, strategies, ideas, inspiration, and connections to resources for teachers and parents
Sunday, October 22, 2017
Rainy
Days
When
rainy days keep students inside for recess, use the extra time for science!
Keep easy-to-do science activities and experiments together with any necessary
materials in resealable plastic bags. Then hand them out and have students work
with partners to complete the activities. It's a great way to squeeze in a
little more science time, plus your students will look forward to indoor
recesses.
Chemical Reaction Experiment -
Bobbing Raisins
Steps
|
|
1. Pour the carbonated
drink into the glass/jar.
2. Drop the raisins into the glass/jar.
What
to see what happens to the raisins!!!
The
bobbing up and down works because the bubbles of carbon dioxide gas in the
drink are much less dense than the drink or the raisins.
Once
the raisins start bobbing up and down, they will continue to rise and fall
for about an hour.
-
Raisins are denser than the carbonated drink, so they will sink.
- Gas bubbles attach to the wrinkles on the raisins. - When the raisins are covered with the bubbles they become less dense than the drink, so they start to rise. - The gas bubbles start bursting and then the raisins become denser than the drink, so they sink again. |
http://www.lovemyscience.com/bobbingraisins.html
Thursday, October 19, 2017
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