Physics paper one

• Specific heat capacity-method

  1. Measure the mass of the block .

  2. Wrap it in an insulating layer.

  3. Measure the initial temperature of the block . Then turn on the power

  4. Take readings of the temperature and power every minute for 10 minutes .

  
• Factors Affecting Resistance-method

  1. Attach a crocodile clip to the wire at 0cm on the ruler

  2. Attach a second crocodile clip to the wire 10 cm away from the first clip

  3. Record the current and pd flowing through it

  4. Move the second crocodile clip another 10cm along the ruler

  5. Repeat this for a number of lengths whilst recording current and pd

  6. Calculate resistance

  
• IV characteristics-method

  1. Set up the circuit as shown

  2. Take readings for the current and voltage

  3. Vary the resistance and take more readings

  4. Swap over the wires connected to the cell , so the direction of the current is reversed.

  5. Plot graph for current against voltage for each component

  
• Density-method (liquid)

  1. Measure the mass of an empty cylinder

  2. Add the liquid and record the mass

  3. Record the volume of liquid

  4. Find the mass of liquid and calculate density
• Density-method (regular object)

  1. Measure the mass of the object

  2. Multiply the length, width and height to find the volume

  3. Calculate density

  
• Density-method (irregular object)

  1. Measure the mass of the object

  2. Fill a eureka can with water and put a beaker under the spout

  3.Completely submerge the object in the can

  4. Measure the volume of water that was displaced

  5. Calculate density