53:02 Tim makes a volcano demonstration for a class. He crafts the volcano out of clay, and then pours vinegar into the
baking soda that is inside the volcano. What would be the best way for Tim to turn this demonstration into an
experiment?
He could pour the same amount of vinegar into several different volcanoes containing baking soda, repeating the
demonstration. He would be answering the question "What happens when I pour vinegar into baking soda?"
He could time how long the volcano bubbles after he pours the vinegar into the baking soda. He would be
answring the question "How long will my volcano bubble?"
O He could measure how far the bubbles travel across the laboratory table after he pours the vinegar into the baking
soda. He would be answering the question "How far will bubbles travel across a flat surface?"
O He could add different amounts of vinegar the same amount of baking soda and time how long it bubbles each
time. He would be answering the question "How does increasing the amount of vinegar affect the amount of
bubbles that form?"
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