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Infographics: Forms of Energy | Science Class 9 PDF Download
The document Infographics: Forms of Energy | Science Class 9 is a part of the Class 9 Course Science Class 9.
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FAQs on Infographics: Forms of Energy - Science Class 9
| 1. What are the different forms of energy? |  |
Ans. The different forms of energy include kinetic energy, potential energy, thermal energy, chemical energy, electrical energy, nuclear energy, and mechanical energy. Each type of energy has unique characteristics and applications in various fields.
| 2. How is energy transformed from one form to another? | |
Ans. Energy transformation occurs when energy changes from one form to another, such as when chemical energy in food is converted into kinetic energy during movement or when electrical energy is transformed into thermal energy in a heater. These transformations follow the law of conservation of energy, which states that energy cannot be created or destroyed, only changed in form.
| 3. What is the significance of renewable energy sources? | |
Ans. Renewable energy sources, such as solar, wind, hydro, and geothermal energy, are significant because they are sustainable and reduce dependence on fossil fuels. They help decrease greenhouse gas emissions, combat climate change, and provide cleaner alternatives for energy production.
| 4. What is the difference between potential and kinetic energy? | |
Ans. Potential energy is the energy stored in an object due to its position or state, such as a rock perched on a hill. Kinetic energy, on the other hand, is the energy of motion, represented by an object in movement. The two forms of energy can convert into one another, such as when the rock rolls down the hill, transforming potential energy into kinetic energy.
| 5. How do we measure energy? | |
Ans. Energy is measured in joules (J), which is the standard unit in the International System of Units (SI). Other units of energy include calories and kilowatt-hours (kWh), used for measuring energy in food and electricity, respectively.
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Sep 23, 2025
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Document Description: Infographics: Forms of Energy for Class 9 2025 is part of Science Class 9 preparation.
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