Flashcards
Energy and it's components
Flashcards do conjunto (16)
- 1What is energy?Energy is what we need to move and grow. It cannot be created or destroyed.
- 2What are the three types of potential energy?Elastic potential energy,
Gravitational potential energy,
Chemical potential energy. - 3What is the definition of gravitational potential energy?Potential energy that is stored in an object because of its position above the Earth.
(E.g.- a boulder on the edge of a cliff) - 4What is the definition of elastic potential energy?Energy stored in a stretched or compressed object.
(E.g.- an elastic band) - 5What is the definition of chemical potential energy?Energy stored in the particles of substances.
(E.g.- food and fuel) - 6What is energy measured in?Joules.
(pronounced "jewels") - 7How does potential energy change into kinetic energy?When an object with potential energy moves.
- 8What are the three stages of an energy flow diagram?Input, process and output.
- 9What does the input stage describe?The input stage describes the energy before any interactions occur in the system.
- 10What does the process stage describe?The process stage describes how the energy is changed when different parts of the system interact.
- 11What does the output stage describe?The output stage describes the outcome of the interaction in the system.
- 12What can we ask about each stage?Input stage: Where does the energy come from?
Process stage: How is the input changed to the output?
Output stage: What changes can be observed? - 13What is the definition of an energy system?Different parts that work together to store, use or give out energy, so that a specific task can be done.
- 14What is the definition of energy transfer?The movement of energy form one object to another, or the change of energy from one form to another.
- 15What are the different systems that energy is active in?Mechanical systems
Thermal systems
Electrical systems
Biological systems - 16What is the law of conservation of energy?The same amount of energy will be present at the end of a reaction or process,as there was at the beginning.
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- Grade 7 Science FlashCards sobre Energy and it's components , criado por Nadia Denysschen em 06-09-2017.
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- Nadia Denysschen
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