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Choose a real-life object (maybe a pressure cooker or a mobile phone) or a problem (maybe a traffic jam near your school). Make a sketch listing what kind of ideas from physics, chemistry, biology,

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Question

Choose a real-life object (maybe a pressure cooker or a mobile phone) or a problem (maybe a traffic jam near your school). Make a sketch listing what kind of ideas from physics, chemistry, biology, earth science, or mathematics are involved. Show how at least two branches of science connect with your example.

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Solution

Example: Pressure cooker

A pressure cooker combines ideas from several scientific disciplines:

  • Physics: As the cooker's internal heat and pressure rise, water's boiling point rises and food cooks more quickly.
  • Chemistry: Food undergoes chemical changes during cooking, which softens and improves digestion.
  • Mathematics: Used to measure temperature, time, and individual amounts.

Connection: Chemistry and physics are related. Faster cooking is the effect of increased pressure (physics), accelerating chemical processes in food (chemistry). This shows how various scientific disciplines interact in daily life.

OR

Example: Mobile Phone

Concepts from several scientific fields are included in a mobile phone:

  • Physics: Used in electromagnetic waves for communication, electricity, circuits, and sound.
  • Chemistry: Chemical reactions that store and provide energy are utilised in batteries.
  • Mathematics: Coding, data processing, and signal calculations are used.

Connection: In order to run the phone, chemical energy in the battery (chemistry) is transformed into electrical energy (physics). This shows how several scientific fields are related to actual items.

OR

Example: Traffic Jam near School

A traffic jam close to school includes ideas from several scientific disciplines:

  1. Physics: The laws of motion govern how cars accelerate and decelerate; stopping distance is affected by tyre friction.
  2. Mathematics: Graphs display flow patterns during peak hours; statistics determine average speed and traffic density.
  3. Earth Science: Air pollutants from vehicle exhaust create smog and have an effect on the climate.

Connection: There is a connection between mathematics and physics. Traffic flow predictions using equations and graphs (mathematics) are made possible by car motion patterns (physics). Together, these two scientific disciplines enable us to figure out how traffic conditions impact the environment.

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Chapter 1: Exploration: Entering the World of Secondary Science - Intext Questions [Page 6]

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NCERT Science Exploration [English] Class 9
Chapter 1 Exploration: Entering the World of Secondary Science
Intext Questions | Q 3. | Page 6
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