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Health Physics

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
what property changes in a liquid-in-glass thermometer   Volume of Liquid  
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what property changes in a digital thermometer   resistance of thermometer  
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what property changes in a crystal strip thermometer   crystals have different melting points  
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what property changes in a rotary thermometer   different rates of expansion in bimetallic strip  
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what property changes in a thermocouple thermometer   voltage produced  
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why use a clinical thermometer to measure body temperature   because it has a smaller more accurate range  
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what is normal body temperature   37 degrees celsius  
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what does a person have if they are over 38 degrees celsius   a fever  
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what does a person have if they are bellow 34 degrees celsius   hypothermia  
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what is a stethoscope   a device used to listen to sounds from within the body  
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what is ultrasound   sound with a frequency above 20,000 Hz  
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what unit do we use to measure noise levels   Decibels (dB)  
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what is the noise level of a normal conversation   60dB  
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what is sound caused by   vibrations  
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what is refraction   the change in speed of light as it passes one material to another  
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what is focal length   the distance between a lens and the point where parallel rays of light are brought to a focus  
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what lens would you use for short sight   concave lens  
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what lens would you use for long sight   convex lens  
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