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science (nt) - Coggle Diagram

- - - - Moving a stationary object , -Changing the speed of a moving object
  - - - Slow down or stop moving objects , - Cause wear and tear , - Produce heat
    - - Texture of surfaces in contract , - Size of force exerted on the two surfaces
  - - - Elastic force , - Frictional force , -Gravitational force , - Magnetic force
  - - - Inclined plane , - Lever , - Pulley
    - - Change the size of the force , - Changing the direction of the force
- - - - Fossil fuels
        
        coal , - natural gas , - crude oil
        
        global warming , - environmental pollution
    - - wind , - the sun , - hydropower , - biomass
  - - - Some conversions are useful
  - - - Forms of energy
        
        Potential energy , - kinetic energy , - light energy , - heat energy , - electrical energy , - sound energy
- - - - Units of measurement
        
        length: cm, m , - mass: g, kg , - temperature: *c , - times: s, min , -volume: cm3 , m3
      - Measuring instruments
        
        Digital instruments
        
        Mass
        
        Electronic balance
        
        Time
        
        Stopwatch
        
        Scale instruments
        
        Temperature
        
        Laboratory thermometer
        
        Length
        
        Flat surface
        
        Less than or equal to 1m in length
        
        Meter ruler
        
        More than 1m in length
        
        Measuring tape
        
        Curved surface
        
        Measuring tape
        
        Volume
        
        Measuring cylinder
      - Length
        
        Estimated
        
        comparing to everyday object , - comparing to body parts
- - - - A measure of the degree of hotness of an object
        
        -Laboratory thermometer , -Data logger with a temperature sensor
    - - A form of energy that flows from a region of higher temperature to a region of lower temperature until both regions reach the same temperature
  - - - A laboratory thermometer makes use of expansion and contraction of a liquid to measure temperature
    - - Overheat cables contract and tighten, and may snap on a cold day
        
        Installing overhead cables with extra length
      - Bridges expand on a hot day and contract on a cold day, and may become damage
        
        Having rollers and expansion gaps on one end of bridges to allow for expansion and contraction
      - Railway tracks that do not have gaps will buckle due to expansion on a hot day
        
        Having tracks with gaps in between to allow for expansion
  - - - -For cooking , -To provide warmth , -To dry things quickly , -To kills germs , -For welding
    - - -Too much heat can damage our organs , -Too much heat can destroy the habitats of animals , -Too much heat can damage physical structures