P1 Energy (4) Insulation required practical AQA

When investigating insulation properties of different materials the independent variable is:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

When investigating insulation properties of different materials the dependent variable is:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

When investigating insulation properties of different materials the control variables are:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

When investigating insulation properties of number of layers of a material the independent variable is:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

When investigating insulation properties of number of layers of a material the dependent variable is:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

When investigating insulation properties of number of layers of a material the control variables are:

• Type of material

• Temperature of water

• Volume of water

• Number of layers of material

Getting down to eye level to read the thermometer reduces which type of error?

• Human error

• Random error

• Systematic error

Not having the thermometer fully in the water increases which type of error?

• Human error

• Random error

• Systematic error

What is the function of the heat proof mat and lid?

• To reduce heat energy loss

• To reduce dissipation of heat to the surroundings

• To reduce the amount of energy wasted

• All of the above

Which type of material would we expect to be the best insulator?

• Tin foil, it is a metal so keeps the heat in

• Paper, it doesn't absorb the heat energy very well

• Wool, it has a lot of air pockets to trap the heat