Pricking lets steam escape, preventing pressure buildup inside. As a result, the puri won’t puff and stays flat. This experiment shows how holes affect pressure and structure in cooking.
Class 8 Science Curiosity Grade 8 Chapter 1 Exploring the Investigative World of Science solutions
Class 8 Science Curiosity Chapter 1 Exploring the Investigative World of Science Question Answer
When you prick a hole in the puri before frying, steam formed inside escapes through the hole. Without trapped steam, there’s no pressure to push the dough upward, so the puri stays flat. This demonstrates how internal pressure causes puffing and how even small changes in structure—like a hole—can affect results. It’s a hands-on way to explore how pressure, heat and sealed surfaces interact in cooking and science.
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