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Preguntas del test (6)
1What is ionization?
- AThe removal of electrons from an atoms or molecules to form ions.
- BThe removal of protons from an atoms or molecules to form ions.
- CThe removal of electrons from an atoms or molecules.
2What is ionizing radiation harmful?
- AIt can kill cells or damage a cell's DNA which can cause a mutation leading to cancer
- BIt can damages the cell by damaging the cell's DNA which can cause a mutation leading to cancer
3Which parts of the EM spectrum can cause a mutation leading to cancer?
- AInfrared and ultraviolet
- BX-rays and gamma rays
4X-rays are used at airports to check passengers' luggage for dangerous objects suggest two advantages of theis over seaching luggage by hand?
- ATime- efficient
Passengers privact kept - BIts more sufficient to find objects
Sharp objects may cause harm
- ATime- efficient
5Phtographyers often carry theirr camerica ad other equiepment in metal cases. WHy would a photographer's case be seacrhed by hand at an airport?
- AMetal absorbs x-ray therefore the content cannot be searched by x-rays or
Films can get damaged by X-rays. - BThe metal block the object inside and burns films too
- AMetal absorbs x-ray therefore the content cannot be searched by x-rays or
6How can a x-ray image can recorded
- AX-ray machines with charged coupled (CCDs)
- BCOmputerized mornography ( CM )
Información
- Descripción
- Test sobre Sin título, creado por Florence Ashaye el 21/10/2014.
- Autor
- Florence Ashaye
- Idioma
- English
- Visitas
- 0
- Etiquetas
- Valoración
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