Table of Contents
- 1 Why Sun rays are short wavelength?
- 2 How do the wavelengths of most of the radiation emitted by the sun differ from those emitted by the Earth?
- 3 What is the difference between longer wavelength and shorter wavelength?
- 4 Which of the following is correctly arranged from longest to shortest wavelength?
- 5 What wavelength does the sun emit?
- 6 What is the difference between the earth and sun with respect to wavelength of peak emission?
- 7 How is energy released from the sun absorbed and reflected?
- 8 Why doesn’t the Earth radiate heat from the Sun?
Why Sun rays are short wavelength?
On its path through the atmosphere the solar radiation is absorbed and weakened by various constituents of the atmosphere. It is also scattered by air molecules and dust particles. Short wavelengths of light, such as blue, scatter more easily than do the longer red wavelengths.
How do the wavelengths of most of the radiation emitted by the sun differ from those emitted by the Earth?
The Sun emits radiation at a shorter wavelength than the Earth because it has a higher temperature, and Planck’s curve for higher temperatures peaks at shorter wavelengths. It is for this reason that Earth’s radiation is referred to as longwave, and the Sun’s radiation is called shortwave.
Why does earth radiate longer wavelength than the sun?
The Earth radiates energy at wavelengths much longer than the Sun because it is colder. Part of this longwave radiation is absorbed by greenhouse gases which then radiate energy into all directions, including downwards and thereby trapping heat in the atmosphere.
What is the difference between longer wavelength and shorter wavelength?
So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. That means that longer wavelengths have a lower frequency. Conclusion: a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!
Which of the following is correctly arranged from longest to shortest wavelength?
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
Which part of the Sun’s electromagnetic spectrum has the longest wavelength?
Red
Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. Ultraviolet (UV) light—is radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 .
What wavelength does the sun emit?
The electromagnetic waves emitted by the sun are of a broad spectrum ranging from X-rays with a wavelength of 2 nanometers to radio waves with a wavelength of 10 meters. The most intense of these to reach the earth’s surface is visible light, with a wavelength around 500 nanometers.
What is the difference between the earth and sun with respect to wavelength of peak emission?
Stefan–Boltzmann Law The first thing to notice is that the energy values are given in powers of 10 (that is, 106 is equal to 1,000,000). This means that if we compare the peak emissions from the earth and sun we see that the sun at its peak wavelength emits 30,000 times more energy than the earth at its peak.
What happens to infrared radiation when it reaches the Earth?
When it reaches the Earth, some is reflected back to space by clouds, some is absorbed by the atmosphere, and some is absorbed at the Earth’s surface. However, since the Earth is much cooler than the Sun, its radiating energy is much weaker (long wavelength) infrared energy.
How is energy released from the sun absorbed and reflected?
Energy released from the Sun is emitted as shortwave light and ultraviolet energy. When it reaches the Earth, some is reflected back to space by clouds, some is absorbed by the atmosphere, and some is absorbed at the Earth’s surface.
Why doesn’t the Earth radiate heat from the Sun?
However, since the Earth is much cooler than the Sun, its radiating energy is much weaker (long wavelength) infrared energy. We can indirectly see this energy radiate into the atmosphere as heat, rising from a hot road, creating shimmers on hot sunny days.