Paper 6: IGCSE Physics

Improvements that could be done to a temperature experiment:

• Same initial temperature
• Same volume of water
• Same shape of beaker
• Beakers of same surface
• Same room temperature
• Same time intervals
• Same surface area (unless given different containers)

Heat loss can be reduced by the insulation of a beaker, and by covering the beaker with a lid.

Improvements made to experiments about heating effect and insulation:

• Covering the container with a lid
• Repeats and Average
• Recording maximum temperature
• Adding insulation
• Keeping constant rmoom temperature
• Avoiding heat loss

Minimizing heating effect of a current

• Decreasing current
• Increasing voltage
• Adding a lamp
• Increasing resistance of a resistor

Variables in a spring extension experiment: (Blue- Constant)

• Number of coils
• Diameter of spring
• Selection of loads
• Mass of spring
• Length of wire
• Range of loads 

Improvement made to calculating circumference by string method:

• Avoid parallax error
• Repeat and Avergae
• Use thinner…