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heat, what are good and poor conductors of heat?, how do we use the…

- - - - to make winter shoes and clothing
        
        why?
        
        winter clothing and shoes trap a layer of air around the body. This reduces loss of body heat to the surroundings.
      - to make containers t keep things warm or cold
- - - - to make cooking utensils
      - why?
        
        heat from the source flows quickly into the food and cooks it
- - - - the higher the temperature of an object, the hotter it is
        
        Our sense of touch lets us know if we are touching somelthing hot or cold. However, our skin cannot measure accurately.
        
        We use a thermometer ti measure temperatures accurately
        
        There are various types of thermometers. The two common ones are: Clinical thermometer (To measure the temperature of the blood) Laboratory thermometer (To measure the temperature of objects and substances during Science experiments)
  - - - we cannot see heat but we can feel its effects. Heat can be felt by our sense of touch.
  - - - Heat from the sun keeps the earth warm
        
        We can also be obtained from burning fuels such as, wood, coal, oil, natural gas, petroleum
        
        many electrical appliances give off heat too. Examples of such electrical appliances are oven, rice cooker, toaster, hair dryer, electric iron and stove
        
        sources of light, such as candles and light bulbs, can also be sources of heat.