Table of Contents
What type of waves reach Earth?
The two main types of waves are body waves and surface waves. Body waves can travel through the Earth’s inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes send out seismic energy as both body and surface waves.
What is the name of the radiation that reaches Earth?
This is called diffuse solar radiation. The solar radiation that reaches the Earth’s surface without being diffused is called direct beam solar radiation. The sum of the diffuse and direct solar radiation is called global solar radiation.
How does the Sun rays reach Earth?
When light travels through space from the sun, all of the frequencies of light travel in a straight line. When light hits the atmosphere, however, the photons begin to collide with gas molecules. Many of these scattered photons fly toward the Earth, making the sky appear to glow.
Do Gamma rays reach Earth’s surface?
Long-wavelength radio waves and infrared rays also do not reach the surface. Infrared, X-, and gamma rays, for which atmospheric windows are closed, can only be observed using balloons and astronomical satellites outside the earth’s atmosphere.
Does the Sun give off gamma rays?
Physicists do not think the sun emits any gamma rays from within. (Nuclear fusions in its core do produce them, but they scatter and downgrade to lower-energy light before leaving the sun.) And the signal becomes up to 20 times stronger than predicted for gamma rays with the highest frequencies.
What are the 2 types of UV rays?
UV radiation is classified into three primary types: ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC).
Where does the energy from cosmic rays come from?
Cosmic rays are a form of high-energy radiation that originate from outside our solar system. When they reach Earth, the rays collide with particles in the upper atmosphere to produce a “shower” of particles, including muons.
How does the sun’s radiation reach the Earth?
Sun emits a variety of radiation from cosmic rays to radio waves. Earth’s magnetic field and atmosphere does not allow all the solar radiation to reach the earth’s surface. Only visible light, infrared, microwaves and Radio waves can enter theough our atmosphere.
Which is the most abundant element in cosmic rays?
Roughly 90 percent of cosmic ray nuclei are hydrogen (protons) and 9 percent are helium (alpha particles). Hydrogen and helium are the most abundant elements in the universe and the origin point for stars, galaxies and other large structures.
Who was the first person to discover cosmic rays?
On Aug. 7, 1912, physicist Victor Hess flew a high-altitude balloon to 17,400 feet (5,300 meters). He discovered three times more ionizing radiation there than on the ground, which meant the radiation had to be coming from outer space. But tracing cosmic ray “origin stories” took more than a century.