What is terrestrial radiation How does it differ from solar radiation?
Insolation or solar irradiance is the power per unit area received from the Sun in the form of electromagnetic radiation. Terrestrial radiation, on the other hand, refers to sources of radiation that are in the soil, water, and vegetation.
What is terrestrial radiation?
Terrestrial external radiation is due to the decay of radioactive materials in the earth itself. Terrestrial external radiation is created by the process of the natural breakdown—or radioactive decay—of radioisotopes in natural materials such as rocks, soil, vegetation, and groundwater.
Can an object be both a good absorber and a good reflector at the same time why or why not?
An object can never be both good absorber and a good reflector at the same time. A good absorber absorbs the radiation while a good reflector reflects the heat. Radiation absorption and reflection are opposite processes.
How does the frequency of radiant energy vary with the temperature of the radiation source?
How does the peak frequency of radiant energy relate to the absolute temperature of the radiating source? The peak frequency increases as temperature increases.
Does terrestrial radiation have longer or shorter wavelengths than solar radiation?
Because the Earth is absorbing only a tiny fraction of the sun's energy, it remains cooler than the sun, and therefore emits much less radiation. Most of this emitted radiation is at longer wavelengths than solar radiation.
What is the difference between terrestrial radiation and heat balance?
It maintains its temperature. This can happen only if the amount of heat received in the form of insolation equals the amount lost by the earth through terrestrial radiation. This balance between the insolation and the terrestrial radiation is termed as the heat budget or heat balance of the earth.
Which type of waves are radiated during terrestrial radiation?
The upper layer of the atmosphere absorbs some amount of heat of the sun as they pass through the atmosphere. Radiation from the earth is called terrestrial radiation. Terrestrial radiation is long wave radiated by the earth.
What is condensation is condensation a warming or cooling process?
Is condensation a warming or cooling process? Condensation is when a gas becomes a liquid. It is a warming process.
What is sublimation is it a heating or cooling process?
Is it a heating or cooling process? a) Sublimation is when the slowest molecules at the surface of a solid have escape velocity and leave the solid. It is a cooling process for the solid left behind.
How do the wavelengths of radiant energy vary with the temperature of the radiating source How does this affect solar and terrestrial radiation?
What is radiant energy? The energy in electromagnetic waves. How do the wavelengths of radiant energy vary with the temperature of the radiating source? Waves are shorter from high temperature sources.
What is thermal radiation How does it differ from the other forms of electromagnetic radiation?
Thermal radiation is one type of electromagnetic radiation, specifically one that transfers heat often in the form of infrared waves. Generally, thermal radiation and infrared waves are referred to simply as "heat". Since heat is carried by electromagnetic waves, it does not need a physical medium to transfer it.
Is solar radiation shortwave or longwave?
Solar energy enters our atmosphere as shortwave radiation in the form of ultraviolet (UV) rays (the ones that give us sunburn) and visible light. The sun emits shortwave radiation because it is extremely hot and has a lot of energy to give off.
How do the wavelengths of radiation emitted by the sun differ from those emitted by the surface of 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.
What is the difference between insolation and terrestrial radiation Class 9?
Insolation: It is the incoming solar energy which is received and intercepted by the surface of the Earth. Terrestrial radiation: The heat of the Sun radiated back by the surface of the Earth in the form of long waves is known as terrestrial radiation.
What is solar radiation and heat balance?
It maintains its temperature. This can happen only if the amount of heat received in the form of insolation equals the amount lost by the earth through terrestrial radiation. This balance between the insolation and the terrestrial radiation is termed as the heat budget or heat balance of the earth.
What is the difference between the sun’s radiation and the radiation given off from Earth’s surface atmosphere?
In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface. The Earth radiates energy at wavelengths much longer than the Sun because it is colder.
What is evaporation in meteorology?
Evaporation is the process by which a liquid turns into a gas. It is also one of the three main steps in the global water cycle. 5 – 8. Earth Science, Geography, Meteorology.
What is precipitation in hydrological cycle?
Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain.
Does dry ice evaporate?
Dry ice does not evaporate, it sublimates.
Does snow evaporate?
When the air is colder than freezing, sublimation happens when molecules of ice and snow absorb so much energy that they skip the liquid form and jump straight to a gas. A number of atmospheric conditions can lead to increased evaporation and sublimation and eventually, less water making it to creeks and streams.
What is the relationship between the temperature of a radiating body and the wavelength it emits?
Wein's Displacement Law: The hotter the radiating body, the shorter the wavelength of maximum radiation.
What is the difference between thermal radiation and blackbody radiation?
Infrared radiation emitted by animals (detectable with an infrared camera) and cosmic microwave background radiation are examples of thermal radiation. If a radiation object meets the physical characteristics of a black body in thermodynamic equilibrium, the radiation is called blackbody radiation.
What is the relationship between radiation thermal energy and electromagnetic waves?
Thermal radiation is one type of electromagnetic radiation, specifically one that transfers heat often in the form of infrared waves. Generally, thermal radiation and infrared waves are referred to simply as "heat". Since heat is carried by electromagnetic waves, it does not need a physical medium to transfer it.
What is the difference between the Sun’s radiation and the radiation given off from Earth’s surface atmosphere?
In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface. The Earth radiates energy at wavelengths much longer than the Sun because it is colder.
Why the radiation wavelengths of the Sun and the Earth are quite different?
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.
Does the radiation emitted by Earth have longer or shorter wavelengths compared to solar radiation?
The majority of this energy is then reradiated into the sky, because the Earth's surface temperature is substantially lower than the sun's, the radiation it emits has longer wavelengths than solar radiation. The longer wavelengths radiated by Earth are readily absorbed by the atmosphere.
Does the sun emit more radiation than the Earth?
Emissivity is a constant (perhaps a function of wavelength), so the energy radiated increases as the 4th power of temperature. The sun, T=6000 K, emits vastly more energy than the earth at T=300 K. The wavelength of maximum energy radiated by a body is given by Wien's displacement law: Lambda = A / T.
What is terrestrial radiation geography class 9?
Terrestrial radiation: The heat of the Sun radiated back by the surface of the Earth in the form of long waves is known as terrestrial radiation.
How is terrestrial heat balance maintained?
Introduction. The earth receives a certain amount of Insolation (short waves) and gives back heat into space by terrestrial radiation (longwave radiation). Through this inflow and outflow of heat, the earth maintains a constant temperature and this phenomenon is referred to as the heat budget of the earth.
Why does terrestrial radiation occur at night?
The surface of the earth is heated by the process of terrestrial radiation and this heat is transferred to the atmosphere. This transfer takes place mostly at night. Thus, terrestrial radiation occur mostly at night.