What is Vesicular Basalt Rock?

Rocks are an important part of the steam bath and this lesson will engage children right from the start as they explore reactions and make a volcano explode. This highly engaging lesson teaches about magma and how rocks are formed, specifically the vesicular basalt rock. Activity extensions are included for getting outdoors and a challenge to visit a local steam bath.

Materials

Volcano Kit
Vesicular Basalt Rocks
River rock
Baking powder
Vinegar
Camera
Thermometer

Pre-lesson
Ask parents or community members if you can visit their steam-bath to talk about the types of rocks used in the steam-bath and how they work. Ask parents to bring in a rock used in the steam-bath too