![]() Place one heaping spoonful of baking soda in the short cup.Fill about half of a large paper cup with baking soda.Mark north, south, east, and west on the edges of the cardboard and the graph paper, orienting them similarly on the table.This short cup is your eruption source (eventual caldera) and the cardboard is the original land surface. Secure the small paper cup (right-side up) onto the cardboard using a small loop of tape on the bottom of the cup.Place the small paper cup in the center of each piece of graph paper and trace around it with a pencil.Cut the top of the small paper cup so that the cup is 2.5 cm high.Cover volcanoes with plastic wrap to keep play dough pliable.Collect the maps/answer keys and file them in a manner that they can be reconnected to the associated volcano.Depending on the length of the class period, students can create volcanoes one day and investigate student-created volcanoes the next day.If using only 3 colors of play dough (which yields 3 lava flows), initially limit students to making 1 stream cut and taking 3 core samples (see Procedures, Part 2, Step 7).Each group of 2-4 students will need at least 3, preferably 4-6, different colors of play dough – one for each lava flow.Either commercially available or homemade play dough ( download recipe) may be used.This activity is best utilized when students have already learned a bit about volcanoes.Plastic wrap (optional – used if activity is done over two days) Management Vinegar, 100-150 ml (4-6 oz.) depending on number and size of flowsĬolored pencils (preferably matching the colors of the play dough)Ģ sheets of graph paper, 8.5 inches by 11 inches Make the connection between the life cycle of a volcano and why they see these features on Earth and Marsġ paper cup, 100 ml (4 oz.) size – cut down to a height of 2.5 cmĢ paper cups,150-200 ml (6-8 oz.) size – 1 for baking soda, 1 for vinegarĬardboard (or cookie sheet, box lid, etc.), approximately 45cm2Īt least 3 colors (preferably 4-6) of play dough or soft clay, fist-size pieces ( download play dough recipe)ġ-3 clear drinking straws – cut into thirdsīaking soda (4-10 spoonfuls depending on number of lava flows).
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