So this week I knew what our Time For Tot's theme should be: Volcanoes.
I must admit, geology was not my favorite subject in school; but thanks to the Internet I was able to find some great resources.
I first showed the kids this web page on Weather Wiz Kids. We talked about what causes volcanoes to erupt, the names of the different parts, i.e magma vs. lava (it is called magma when it is inside, once it comes out it is lava), and lot of other facts about volcanoes.
Then we talked about plate tectonics and made our own little earthquakes. I took several smaller books and placed two books side by side and then another layer of books on top. The final book was one big book that covered all of the books. I moved the bottom layer of books, bumping them into each other and showed how it made the top layer move and shake.
Then it was time to make our volcano. I found the recipe here, on Weather Kids; but as I was getting out the ingredients I realized we did not have two cups of salt as it calls for, so we cut the recipe in half and it was still enough to cover the water bottle. Here are the instructions we used to make a Baking Soda Volcano.
- 3 cups flour
- 1 cup salt
- 2 T. cooking oil
- 2 T. baking soda
- Dish-washing detergent
- Food color
- Warm Water
- Empty water bottle
- Baking dish or pan (use disposable!!)
First, make the cone of the baking soda volcano. Mix 3 cups flour, 1 cups salt, 2 tablespoons cooking oil and 1 cups warm water. The mixture should be smooth and firm. Add more warm water if needed.
Stand the soda bottle in the baking pan and mold the dough around it into a volcano shape.
*Don't cover the opening or drop dough in it.
Fill the bottle most of the way full with warm water and a bit of red food color.
Add 6 drops of detergent to the bottle contents. Add 2 tablespoons of baking soda to the contents.
Slowly pour vinegar into the bottle.
Watch the eruption!
_________________________________________We did not have red food coloring so we used yellow. It would have been more dramatic with red. The kids had fun watching it explode (or more like bubble and over flow), and if we added more baking soda it erupted again.
We then ended the day by watching lots of real volcano eruptions on YouTube.