Flashcards
P1.6 - P1.10
Cards in this deck (26)
- 1Light is an electromagnetic wave. All electromagnetic waves are transverse.Light is an electromagnetic wave. All electromagnetic waves are transverse.
- 2The range of colours that humans can see is called the visible spectrum.Light is an electromagnetic wave. All electromagnetic waves are transverse.
- 3There are more electromagnetic waves beyond each end of the visible spectrum. We cannot see these unless we use special detectors.There are more electromagnetic waves beyond each end of the visible spectrum. We cannot see these unless we use special detectors.
- 4Infrared radiation is found just beyond the red end of the visible spectrum.Infrared radiation is found just beyond the red end of the visible spectrum.
- 5Ultraviolet radiation is found just beyond the violet end of the visible spectrum.Ultraviolet radiation is found just beyond the violet end of the visible spectrum.
- 6In a vacuum all electromagnetic waves travel at the same speed (300 000 km per hour).In a vacuum all electromagnetic waves travel at the same speed (300 000 km per hour).
- 7The full range of electromagnetic waves is called the electromagnetic spectrum.The full range of electromagnetic waves is called the electromagnetic spectrum.
- 8In order of wavelength (longest to shortest) the seven types of wave in the electromagnetic spectrum are: Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.In order of wavelength (longest to shortest) the seven types of wave in the electromagnetic spectrum are: Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.
- 9As wavelength gets shorter, the frequency gets higher.As wavelength gets shorter, the frequency gets higher.
- 10All waves transfer energy. Electromagnetic waves with higher frequencies transfer more energy. This means they can be dangerous.All waves transfer energy. Electromagnetic waves with higher frequencies transfer more energy. This means they can be dangerous.
- 11Microwaves can heat up water in the cells inside the body and damage them.Microwaves can heat up water in the cells inside the body and damage them.
- 12Infrared radiation can cause burns to the skin.Infrared radiation can cause burns to the skin.
- 13Ultraviolet radiation can damage our eyes. It can also damage the DNA in our skin cells, which could lead to skin cancer.Ultraviolet radiation can damage our eyes. It can also damage the DNA in our skin cells, which could lead to skin cancer.
- 14X-rays and gamma rays can penetrate the body and kill cells directly, or damage their DNA and cause cancer.X-rays and gamma rays can penetrate the body and kill cells directly, or damage their
DNA and cause cancer. - 15Gamma rays have the most energy of any wave in the electromagnetic spectrum.Gamma rays have the most energy of any wave in the
electromagnetic spectrum. - 16Radio waves can be used for broadcasting and communications, including satellite TV and wireless Internet.Radio waves can be used for broadcasting and communications, including satellite TV
and wireless Internet. - 17Microwaves are used to heat food in microwave ovens and are also used in mobile phones and satellite TV.Microwaves are used to heat food in microwave ovens and are also used in mobile phones and satellite TV.
- 18Infrared is used in cooking, in optical fibre cables for phones, the Internet and in remote controls. It is also used in thermal imaging.Infrared is used in cooking, in optical fibre cables for phones, the Internet and in remote controls. It is also used in thermal imaging.
- 19Visible light is used by human eyes and in photography.Visible light is used by human eyes and in photography.
- 20Ultraviolet is used for security markings. These can only be seen under a UV lamp. Ultraviolet can also be used to disinfect water and sewage by killing the bacteria.Ultraviolet is used for security markings. These can only be seen under a UV lamp.
Ultraviolet can also be used to disinfect water and sewage by killing the bacteria. - 21X-rays are used in airport scanners and medical X-rays.X-rays are used in airport scanners and medical X-rays.
- 22Gamma rays are used to sterilise food and medical equipment. They’re also used to kill cancer cells in radiotherapy and to detect cancer.Gamma rays are used to sterilise food and medical equipment. They’re also used to kill cancer cells in radiotherapy and to detect cancer.
- 23Ionising radiation is emitted all the time by radioactive materials. Ionising radiation can remove electrons from atoms to form ions.Ionising radiation is emitted all the time by radioactive materials. Ionising radiation can remove electrons from atoms to form ions.
- 24Ions are very reactive. If atoms in a cell form ions the reactions that follow can damage DNA and cause cancer, or destroy the cell completely.Ions are very reactive. If atoms in a cell form ions the reactions that follow can damage DNA and cause cancer, or destroy the cell completely.
- 25There are three main types of ionising radiation: gamma (γ) rays, alpha () particles and beta (ß) particles.There are three main types of ionising radiation: gamma (γ) rays, alpha () particles and
beta (ß) particles. - 26Gamma rays are electromagnetic radiation and alpha and beta particles are particles of matter. They all cause ionisation and they all transfer energy.Gamma rays are electromagnetic radiation and alpha and beta particles are particles of matter. They all cause ionisation and they all transfer energy.
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- GCSE Science Flashcards on P1.6 - P1.10, created by Jananee on 27/01/2016.
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- Jananee
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