Intermediate Level >> Reading And Writing Materials >> The dangers of radiation and a gap fill reading comprehension worksheet.
The Dangers of Radiation
Intermediate
Seven parts of sentences have been removed from this article about radiation. For each space in the text, write the letter of the extract that should go there. There is one extra removed part that does not belong in the text.
Here are the removed parts:
- as ionizing radiation
- only certain types of radiation
- looking at the source
- will not happen when
- which most people
- immediately think of it
- plutonium are examples of
- make a person sick
Most people hear terms like radiation and ___F__(1) as a bad or dangerous thing. It turns out that __B__(2) are ordinarily harmful to humans. For example, ultraviolet radiation can give people sunburns. X-rays and gamma rays can __H__(3), or even die if they are exposed to them for a very long time. Some types of particle radiation can also make people sick and lead to burns. Any type of radiation that causes changes in the world like these is referred to __A__(4). If radiation does not carry high enough levels of energy, though, then these changes __D__(5) something is hit by the radiation. This is referred to as non-ionizing radiation, which is not as dangerous.
One can distinguish between various types of radiation by __C__(6) of the radiation, its wavelength (if the radiation is electromagnetic), the amount of energy being carried, any particles involved, etc. Radioactive material is a physical material that emits radiation. Uranium and __G__(7) radioactive materials. The atoms they are made of tend to fall apart and give off different kinds of radiation, like gamma rays and lots of types of particle radiation.
http://simple.wikipedia.org/wiki/Radiation
