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Questions and Answers
Which of the following is considered a renewable energy source?
Which of the following is considered a renewable energy source?
- Wind (correct)
- Natural gas
- Coal
- Nuclear
Chemical energy is a form of energy stored in physical objects.
Chemical energy is a form of energy stored in physical objects.
False (B)
What type of energy is generated by a moving object?
What type of energy is generated by a moving object?
kinetic energy
Sound travels in _______.
Sound travels in _______.
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Match the type of energy with its description:
Match the type of energy with its description:
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During which time can shadows be observed?
During which time can shadows be observed?
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Sound travels in a vacuum.
Sound travels in a vacuum.
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What type of energy do we observe in shadows?
What type of energy do we observe in shadows?
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Energy that is associated with the position of an object is called _______.
Energy that is associated with the position of an object is called _______.
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Match the type of energy with its corresponding form:
Match the type of energy with its corresponding form:
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Study Notes
Energy Forms and Their Characteristics
- Sound travels in waves, which can propagate through air, water, and solid materials.
- Renewable energy sources include solar, wind, and hydroelectric power; they are replenished naturally.
- Non-renewable energy sources include fossil fuels (coal, oil, natural gas) and nuclear energy; they are finite and deplete over time.
Light and Shadows
- Shadows are typically visible during the day when the sun provides light.
- At night, shadows are less pronounced unless other light sources are present.
- Day and night experiences shadows depending on the availability and type of light sources.
Forms of Energy
- Chemical energy is stored in the bonds of chemical compounds and can be released during a chemical reaction.
- Kinetic energy is the energy of motion, dependent on the mass and velocity of an object.
- Thermal energy refers to the internal energy of an object due to the motion of its particles, often perceived as heat.
- Light energy is electromagnetic radiation that is visible to the human eye and allows us to see.
- Electrical energy results from the flow of electric charge and powers devices and machines.
- Sound energy is produced by vibrating objects and travels in waves through different media.
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