Answer:
Explanation:
When you sit by a campfire, most of the heat you are receiving from the fire does not come from hot air. ... This radiation carries energy which is converted to heat when it hits another object and is absorbed. In contrast, conduction involves the direct movement of heat through an object.
Answer:
Water
Explanation:
Because it does not conduct much energy.
Answer:
Refraction
Explanation:
Refraction is a phenomenon typical of light waves. It occurs when a ray of light passes through the interface between two mediums: when doing so, the ray of light changes speed and also changes direction, according to Snell's Law:
where
are the index of refraction of the first and second medium, respectively
are the angle of incidence and refraction, respectively
When white light enters a prism, therefore, it undergoes refraction, and it changes direction.
However, the index of refraction of a material, n, depends also on the wavelength of the light. In particular, the shorter the wavelength, the higher the index of refraction.
This means that as white light enters a prism, the different wavelengths contained in the white light are refracted at different angles: as a result, the 7 colors of light will separate, and that is why we observe the rainbow when white light enters a prism.
The correct option is A.
In science, model refers to a representation of idea, object or process which is used to describe a phenomenon that can not be directly observed.
In option A, it can be seen that protons that are inside the nucleus of an atom can not be seen with the naked eyes, that is why scientists used models to represent them.
Answer:
the gravitational potential energy is converted to kinetic energy
Explanation:
Because the conversation of the energy as a tool permits the calculation of the velocity just before it hits the surface