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Which type of ionising radiation is stopped from entering the body by the layer of dead skin at the surface?
Wiki User
∙ 12y ago
Alpha particles (Helium nuclei) as well as any other large radiation by products.
Smaller particles go right through you-> gamma rays, x-rays, etc.
Wiki User
∙ 12y ago
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Radiation from the skin surface and evaporation of sweat are two ways in which the skin helps to get rid of body?
Heat
How do plant cells respond to their environment?
The environmental factors to which plant cells respond are water, gravity, solar radiation. The response is cell growth, cell death, and in the case of radiation changes in what a cell becomes. Trim a branch end and each cell on the surface is capable of becoming another branch with leaves and seeds.
Why is it unlikely that the first cell evolved at the earth sirface?
During the period when living things appeared on Earth, the surface level of ultraviolet (UV) radiation is believed to have been much higher than current levels, because oxygen levels were too low to form an ozone layer. This UV radiation would have damaged living cells that were not protected, suggesting that the earliest life was in warm water around deep-sea volcanic vents. However, some scientists have theorized that a hydrocarbon haze in the atmosphere could have compensated for the lack of upper level absoption, while providing the surface heat necessary for living organisms.
What is the source of Energy for All Of The Processes that Occur on the Earth's surface?
None of those is really a "source" of energy; those are only ways in which energy is transported. Earth gets most of its energy from the Sun, through radiation.
What is the Hairlike structure on the surface of many bacteria?
Flagella are long hair-like structures and Cillia are short hair-like structures. They can both help with the movement of the bacteria and cillia could stop foreign material entering the bacteria cell.
What blocks most ultraviolet radiation from entering the earth's surface?
The Ozone layer.
What effect can a very large eruption have on earths climate?
It will cool the earth's surface as radiation from the sun is blocked from entering the atmosphere
Why earth possess magnetic field?
The Most Energetic Cosmic Rays Are Dangerous Because They Are Ionising Radiation. Fortunately, On Earth We Have Two Very Effective Line Of Defence: The Earths Magnetic Field And Its Atmosphere! x
Does the ozone layer protect us from only ionising radiation?
Yes. Along with the rest of the atmosphere, ozone's unique contribution is in absorbing UV-B which can damage our DNA (and the DNA of all surface dwellering plants and animals alike, land and sea).
Why is radiation of heat larger in a black surface than a white surface?
A black surface absorbs the heat radiation and a white surface reflects the heat radiation
What is tilt factor for beam radiation?
Tilt factor for beam radiation(Rb) is the the ratio of beam radiation on the surface under consideration and the beam radiation on a horizontal surface.
What percent radiation is lost after reaching earth's surface?
about 5% of radiation is lost before reaching Earth's surface
The earths surface transfers heat to the atmosphere primarily by?
the answer is radiation
What happens when radiation reaches earth's surface?
90% of radiation reaching the surface of the earth is absorbed! and 10% is reflected into space.
What form is radiation emitted from the earth's surface back into the atmosphere?
Heat rises from the surface of the earth in the form of infra-red radiation.
What is the term for solar radiation that reaches the earth's surface?
The solar radiation that reaches the earths surface from the sun is called INSOLATION
What type of radiation is trapped on the Earth's surface by the Greenhouse effect?
Infrared Radiation
