- 1 What is re-radiated energy?
- 2 What wavelength does Earth re radiate as heat?
- 3 How is energy radiated back into space?
- 4 What is called for the phenomenon when the radiation absorbed by the atmosphere is re-radiated towards the surface of the earth?
- 5 What happens when the Earth’s surface absorbs the sun’s energy?
- 6 Which of these can control global warming?
- 7 At what wavelength does the earth radiate most strongly?
- 8 Why does the earth radiate heat?
- 9 Which helps to maintain a normal range of on Earth?
- 10 What is the fundamental energy balance for Earth?
- 11 What prevents all of the radiation from escaping into space?
- 12 What happens to sunlight that strikes the ground?
- 13 Which gas is responsible for global warming?
- 14 How an enhanced greenhouse effect can harm the planet?
- 15 What is the greenhouse effect and is it a new phenomenon?
What is re-radiated energy?
The process of radiating previously absorbed energy, especially in the form of heat (longwave, infrared radiation) from Earth’s surfaces, and in the atmosphere by greenhouse gases.
What wavelength does Earth re radiate as heat?
The Earth’s surface is much cooler, only about 15 degrees Celsius on average. The peak radiation from the surface is at thermal infrared wavelengths around 12.5 micrometers.
How is energy radiated back into space?
Earth returns an equal amount of energy back to space by reflecting some incoming light and by radiating heat (thermal infrared energy). Most solar energy is absorbed at the surface, while most heat is radiated back to space by the atmosphere.
What is called for the phenomenon when the radiation absorbed by the atmosphere is re-radiated towards the surface of the earth?
The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
What happens when the Earth’s surface absorbs the sun’s energy?
Absorbed sunlight is balanced by heat radiated from Earth’s surface and atmosphere. The atmosphere and the surface of the Earth together absorb 71 percent of incoming solar radiation, so together, they must radiate that much energy back to space for the planet’s average temperature to remain stable.
Which of these can control global warming?
One of the most effective ways to prevent global warming is to start using renewable energy sources such as solar, geothermal, wind and biomass, and stop using fossil fuels. Use renewable energy resources to supply power to your home.
At what wavelength does the earth radiate most strongly?
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.
Why does the earth radiate heat?
Because Earth is much cooler than the Sun, it re-radiates energy as longwave, lower-energy wavelengths than it absorbs. This absorbed energy is re-radiated as infrared radiation, which we feel as heat.
Which helps to maintain a normal range of on Earth?
Answer Expert Verified. Answer: Greenhouse gases absorb radiation from the sun and re-radiate it back toward the atmosphere, which helps to maintain a normal range of temperature on Earth.
What is the fundamental energy balance for Earth?
Earth’s energy balance refers to the balance between the amount of incoming solar radiation and outgoing terrestrial radiation. In a 1-year period, the overall average flow of energy to and from Earth must balance, or the global mean (average) temperature of Earth would change.
What prevents all of the radiation from escaping into space?
Earth absorbs the sunlight and gives it back as an invisible form of energy, infrared radiation. The only thing keeping that energy from escaping back into space is the atmosphere.
What happens to sunlight that strikes the ground?
About half of the solar radiation that strikes the top of the atmosphere is filtered out before it reaches the ground. About 3% of the energy that strikes the ground is reflected back into the atmosphere. The rest is absorbed by rocks, soil, and water and then radiated back into the air as heat.
Which gas is responsible for global warming?
Global Warming Potential (100-year): 1 Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.
How an enhanced greenhouse effect can harm the planet?
The enhanced greenhouse effect, sometimes referred to as climate change or global warming, is the impact on the climate from the additional heat retained due to the increased amounts of carbon dioxide and other greenhouse gases that humans have released into the earths atmosphere since the industrial revolution.
What is the greenhouse effect and is it a new phenomenon?
The greenhouse effect is a natural phenomenon allowing life to occur on the planet. It is caused by a series of greenhouse gases (water vapor, carbon dioxide, methane and nitrous oxide) that absorb part of the energy, while the remainder escapes into space.