Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.
How does radiation work in science?
Radiation is energy that’s carried by waves or a stream of particles. Radiation works by damaging the genes (DNA) in cells. Genes control how cells grow and divide. When radiation damages the genes of cancer cells, they can’t grow and divide any more.
What is radiation definition chemistry?
(RAY-dee-AY-shun) Energy released in the form of particle or electromagnetic waves. Common sources of radiation include radon gas, cosmic rays from outer space, medical x-rays, and energy given off by a radioisotope (unstable form of a chemical element that releases radiation as it breaks down and becomes more stable).
What is radiation chemistry and example?
Radiation is the release of energy, whether it takes the form of waves or particles. Radioactivity refers to the decay or splitting of an atomic nucleus. A radioactive material releases radiation when it decays. Examples of decay include alpha decay, beta decay, gamma decay, neutron release, and spontaneous fission.
How do you explain radiation to a kid?
Radiation is energy that moves from one place to another. Light, sound, heat, and X-rays are examples of radiation. The different kinds of radiation fall into a few general categories: electromagnetic radiation, mechanical radiation, nuclear radiation, and cosmic rays.
How does radiation happen?
Radiation is energy. It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects.
Is radiation chemistry or physics?
Radiation chemistry is a subdivision of nuclear chemistry which is the study of the chemical effects of radiation on matter; this is very different from radiochemistry as no radioactivity needs to be present in the material which is being chemically changed by the radiation.
How is heat transferred by radiation?
Radiation heat transfer is a process where heat waves are emitted that may be absorbed, reflected, or transmitted through a colder body. Sun heats the earth by electromagnetic waves. Hot bodies emit heat waves.
How does radiation heat work?
Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the Sun gets to Earth. In fact, all hot things radiate heat to cooler things. When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.
What is radiation How does it affect an object?
The main effect radiation has on matter is its ability to ionize atoms to become ions, a phenomenon known as ionization, which is very similar to the photoelectric effect. Radioactive particles or electromagnetic waves with sufficient energy collide with electrons on the atom to knock electrons off the atom.
What are the properties of radiation?
Radiation can be absorbed by substances in its path. For example, alpha radiation travels only a few centimetres in air, beta radiation travels tens of centimetres in air, and gamma radiation travels very large distances.
What are the effects of radiation?
Radiation can damage the DNA in our cells. High doses of radiation can cause Acute Radiation Syndrome (ARS) or Cutaneous Radiation Injuries (CRI). High doses of radiation could also lead to cancer later in life.
What is radiation give 3 examples?
Radiation Examples ultraviolet light from the sun. heat from a stove burner. visible light from a candle. x-rays from an x-ray machine.
What causes nuclear radiation?
What causes atoms to be radioactive? Atoms found in nature are either stable or unstable. An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy.
Can radiation be used as energy?
Radiation sources can be used to power spacecraft and satellites, the lights on ocean buoys, and remote weather stations. They can also be used to generate electrical power for consumer use, as is done in a nuclear reactor. Of all of these processes, nuclear power is probably the most well known.
What can radiation do to a pregnant woman?
The health consequences can be severe, even at radiation doses too low to make the mother sick. Such consequences can include stunted growth, deformities, abnormal brain function, or cancer that may develop sometime later in life.
Is all radiation light?
Sometimes we use the term ‘radiation’ when we mean ‘light’, and vice versa. In fact visible ‘light’ is a form of radiation, which can be defined as an energy that travels in the form of electromagnetic waves.
What chemicals are in radiation?
- Cesium.
- Cobalt.
- Iodine.
- Ionizing Radiation.
- Plutonium.
- Radium.
- Radon.
- Strontium.
Can you feel radiation?
Radiation does not hurt, sting, or burn when it enters the body. You will hear clicking or buzzing throughout the treatment and there may be a smell from the machine. Typically, people have treatment sessions 5 times per week, Monday through Friday.
What is the quantum theory of radiation?
The smallest amount of energy that can be emitted or absorbed in the form of electromagnetic radiation is known as quantum. The energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation.
Is radioactivity a part of chemistry?
Radiation chemistry is a branch of chemistry (some say physical chemistry) that studies chemical transfor- mations in materials exposed to high-energy radiations. It uses radiation as the initiator of chemical reactions, as a source of energy that disrupts the sensitive energy balance in stable systems.
Does radiation have a mass?
The other form of radiation — known as particle radiation — is tiny fast-moving particles that have both energy and mass (weight). This less-familiar form of radiation includes alpha particles, beta particles, and neutrons, as explained below.
Why do we study radiation physics?
Radiation physics treatments are largely used in treating cancers and tumours. The students are given a detailed understanding of the treatment procedures involved in cancer and tumour treatments.
Does radiation produce heat?
Thermal radiation is generated when heat from the movement of charges in the material (electrons and protons in common forms of matter) is converted to electromagnetic radiation. Sunshine, or solar radiation, is thermal radiation from the extremely hot gasses of the sun, and this radiation heats the earth.
Can you lose heat by radiation?
Radiation (similar to heat leaving a wood stove). This normal process of heat moving away from the body usually occurs in air temperatures lower than 20°C (68°F). The body loses 65% of its heat through radiation.