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Apparatus
 

Apparatus

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    Apparatus Apparatus Presentation Transcript

    • Apparatus
      • Temperature is measured in degree Celsius ( 0 C).
      • There are different types of thermometers for different purposes.
      Temperature A clinical thermometer such as the one above is used to measure temperatures a few degrees below and above the body temperature of 37 0 C. placed under armpit or tongue A digital thermometer like the one on the left can measure the temperature of our surroundings. A laboratory thermometer is used to measure temperature in Science experiments.
    • How do you read the thermometer?
      • Reading temperature – how to read correctly:
        • Step 1: Hold the thermometer upright.
        • Step 2: Look at the level of the liquid.
        • Step 3: Position your eyes at the same level as the liquid in the thermometer (see the next slide).
        • Step 4: Read the marking nearest to the level of the liquid in the thermometer.
      • Reading temperature – how to read correctly:
      How do you read the thermometer? Answer: 42 0 C
    • Let’s Practice
      • Volume is the space that a substance or shape occupies or contains.
      • Volume is measured in millilitres and litres (m l and ℓ ) .
      • What can you use to measure volume?
      Volume
      • Beaker
      • Measuring Cylinder
    • Reading volume Position the beaker/measuring cylinder at eye level.
      • Length refers to the longest dimension of an object.
      • Length is measured in metre (m), centimetre (cm) and millimetre (mm) .
      • What can you use to measure length?
      Length
      • Ruler
      • Measuring Tape
    • Length
      • But how do we measure the circumference of an object?
      circumference is the distance around a close curve
    • Length
      • But how do we measure the circumference of an object?
      • We can use a string and a ruler
    • Using string to measure circumference
        • Step 1: Use the string to coil around the circumference of the object.
        • Step 2: Make a mark on the string where the tip touches the meeting point.
        • Step 3: Use a ruler to measure from the tip of the string used to the marked point.
    • Using string to measure circumference Remember, use the same tip of the string when measuring using the ruler. If the point is at AB (B is the marked point), measure the length AB with the ruler and not BC. A B C
    • Mass
      • What can you use to measure the mass of matter?
          • A lever balance
          • A electronic balance
          • A weighing scale
      lever balance electronic balance
    • What is mass?
      • Mass is measured in grams (g) or kilograms (kg) .
        • We can use fixed masses to measure the mass of the toy bear below.
      Since the lever is balanced, the mass of the toy bear is equal to 100 g.
    • Let’s practice