Exam (elaborations)
PHYSICS – ENERGY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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PHYSICS – ENERGY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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PHYSICS – ENERGY QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
energy - ANSWER the ability to do work or cause a change.
forms of energy - ANSWER mechanical (moving parts of things), heat (thermal), chemical (chemical
bonds between atoms), electromagnetic (light) nuclear, electrical, gravitational, elastic
(stretching/compressing)
energy conversions - ANSWER energy can be changed or converted from one form into another. Always
come in pairs (one form into another)
mechanical energy - ANSWER any energy associated with motion of moving objects. This is the energy of
moving things, parts, or particles. Can be simple as rolling a rock, hitting a nail with a hammer
heat (thermal) energy - ANSWER caused by internal motion of atoms or molecules within a substance.
often results from friction. particles move faster as energy increases. so the faster the particles move,
the more energy they carry.
chemical energy - ANSWER energy is released when the bonds between atoms or molecules are broken.
chemicals may contain huge amounts of potential energy.
electromagnetic energy (light) - ANSWER results from any wavelength of light, whether it is visible or
not. ex.) xrays, lasers, radio waves
electrical energy - ANSWER caused by the movement of electrons or charged particles. often call this
electricity. ex.) electricity flowing in our home wiring or batteries
nuclear energy - ANSWER the energy released when the nucleus of an atom splits (fission) of joins
(fusion) with another. THIS IS THE MOST CONCENTRATED FROM OF ENERGY IN THE UNIVERSE, and is
responsible for powering nuclear reactions, atomic bombs, and all stars.
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