18720110
Descrição
FlashCards por Fatima Syeda, atualizado more than 1 year ago
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Criado por Fatima Syeda
aproximadamente 5 anos atrás
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| Questão | Responda |
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Energy Around You!
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Energy (binary/octet-stream)
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| What is energy? | Power derived from the utilisation of physical or chemical resources, especially to provide light and heat or to work machines. |
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What is energy needed for?
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Energy is needed to move or heat something, to make noise or light, or to change an object's shape. Energy makes things happen. |
| What are the forms of energy? |
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| What is kinetic energy? | Kinetic energy is the energy of movement, anything that moves has kinetic energy. The faster something moves, the more kinetic energy it has. |
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What is heat energy?
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Heat energy can come from the sun, flames, chemical reactions, electrical devices or even a person or animal. Heat warms, burns, dries and melts. |
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What is light energy?
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Light energy comes from the sun, light globes and animals such as glow worms |
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What is sound energy?
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Sound energy is the energy air has when it is vibrating. Your ears and brain interpret this as sound. |
| What is electrical energy? | Electrical energy is produced by power stations, solar cells, batteries and and lightning. It powers your TV, toaster and microwave. |
| What is potential energy? | Stored energy possessed by an object such as elastic potential energy of a squashed spring. |
| What best describes energy stored within a substance? |
Chemical energy
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| What is photosynthesis? |
The process in which green plants convert light energy into chemical energy.
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| What is gravitational potential energy? | When energy is stored in an object above ground, the greater the height the more gravitational potential energy |
| What is chemical energy? | Energy stored in substances such as energy that is released when you digest food |
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What is elastic potential energy?
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Energy stored in stretched or squished springs |
| What is nuclear energy? | Energy stored inside the tiny atoms that make up all matter |
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How can heat be transferred?
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-conduction -convection -radiation |
| Explain the Law of Conversation of Energy | It states energy can never be destroyed or created. Energy can be passed on or wasted, but never lost and if one object wastes energy then its always gained by another object. |
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