Integrated Science (7th Edition)

Chapter 7

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; At any temperature, energy in the form of ... more

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The energy of an object increases with the ... more

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The energy source of given objects is heat. So, ... more

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The spectrum of the light emitted by the Sun ... more

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; The bending of light when it travels from one ... more

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Refraction is the bending of a wave when it passes... more

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The critical angle is the maximum angle of ... more

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The wavelength is a property of a wave that is the... more

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A transparent solid body, often having triangular ... more

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The change in direction of light when it travels ... more

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Polarization cannot be explained by longitudinal ... more

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Planck’s theory explains the nature of vibrating ... more

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The expression of Planck’s energy of a photon is ... more

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Light is an electromagnetic wave that can travel ... more

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The frequency or the wavelength of the wave ... more

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Polarization supports the wave model of light. ; ... more

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Blue light carries more energy. No, the preferred ... more

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The particle model of light. ; The phenomenon in ... more

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Light gives up all its energy when absorbed by ... more

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Bluish stars have higher surface temperatures than... more

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It occurs when the angle of incidence is greater ... more

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This is because of the optical illusion caused due... more

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While looking at a reflective surface through the ... more

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Reflected light gets polarised while passing ... more

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Planck’s findings were based on the assumption ... more

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Each model explained some phenomena of light that ... more

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In reflection, the light changes its direction ... more

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Can heat waves be seen? Can heat waves bend the ... more

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Radio waves are low frequency and low energy waves... more

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Light rays diverge while passing through a concave... more

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The equation is the energy associated with a ... more

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Radio waves have lower energy and frequency as ... more

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8.33 min ; The formula to calculate the time ... more

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5.56 h ; The formula to calculate the time ... more

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; Law of reflection states that the incident ray... more

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The substance is ethyl alcohol. ; When a ray is ... more

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; The relationship between the frequency, ... more

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; The formula to calculate the energy associated ... more

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; The relationship between the frequency, ... more

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1.3 s ; The time required for the light to reach ... more

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4.35 min ; The formula to calculate the time ... more

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; Law of reflection states that the incident ray... more

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Glass ; When a ray is moving from one medium to ... more

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; The relationship between the frequency, ... more

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This is because the energy of the photon of red ... more

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. ; The relationship between the frequency, ... more

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. ; The rate of vibration of electrons is obtained... more

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