Forms of Energy
What form of energy is produced when objects vibrate?
Sound energy
What is nuclear energy?
Energy released from the nucleus of an atom
What are the two main types of waves through which energy can travel?
The two main types of waves are mechanical waves and electromagnetic waves. Mechanical waves need a medium (like air or water) to travel through. Electromagnetic waves do not require a medium and can travel through space.
Which color of visible light has the most energy?
Violet light has the most energy in the visible spectrum because it has the shortest wavelength and highest frequency.
How does energy in light contribute to photosynthesis?
In photosynthesis, plants use light energy (mainly from the sun) to convert carbon dioxide and water into glucose and oxygen.
What is energy?
Energy is the ability to do work or cause change.
What type of energy is stored in food?
Food contains chemical energy, which is stored in the bonds of chemical compounds and released during digestion.
What type of wave is a sound wave?
Sound waves are mechanical longitudinal waves. The particles of the medium vibrate parallel to the direction the wave travels.
Which color of visible light has the least energy?
Red light has the least energy because it has the longest wavelength and lowest frequency in the visible spectrum.
Can light energy be stored? If so, how?
Yes, light energy can be stored indirectly by converting it into other forms. For example, solar energy can be stored in batteries
What is kinetic energy?
The energy of a moving object
What type of energy does a stretched rubber band have?
A stretched rubber band has elastic potential energy because it is stored due to deformation.
What type of energy wave can travel through the vacuum of space?
Electromagnetic waves (such as light, X-rays, and radio waves) can travel through the vacuum of space because they do not need a medium.
How is the energy of light related to its color?
The energy of light increases with frequency and decreases with wavelength. Colors like blue and violet carry more energy than red or orange.
Why does ultraviolet light cause more skin damage than visible light?
Ultraviolet (UV) light has more energy than visible light. This higher energy can break chemical bonds in skin cells and DNA
What is potential energy?
Stored energy based on position or condition.
What is thermal energy, and how is it produced?
Thermal energy is the internal energy in substances—the vibration and movement of atoms and molecules within substances. It is produced through friction, chemical reactions, or electrical resistance.
What is the difference between transverse and longitudinal waves?
In transverse waves, particles move perpendicular to the direction of the wave (e.g., light waves).In longitudinal waves, particles move parallel to the direction of the wave (e.g., sound waves).
Why do darker colors absorb more energy than lighter colors?
Darker colors absorb more wavelengths of light, converting more light into heat energy, while lighter colors reflect more light and absorb less.
What is the relationship between the energy of light and its frequency?
The energy of a light wave is directly proportional to its frequency. The relationship is described by the equation: E = h × f
Name two main types of energy.
Kinetic energy and potential energy.
What type of energy is used to power solar calculators?
Solar calculators use radiant energy from sunlight, which is converted into electrical energy by solar cells.
What part of a wave determines its energy?
The amplitude and frequency of a wave determine its energy.
What is the relationship between color temperature and energy in light sources?
Light sources with a higher color temperature (measured in Kelvin) emit more energy and appear bluer, while lower temperature sources emit less energy and appear redder.
Which type of electromagnetic wave has the highest energy?
Gamma rays have the highest energy in the electromagnetic spectrum due to their extremely high frequencies and short wavelengths.