Front

Why is a pointer attached to the spring?

Back

To ensure the total length of the spring can be measured accurately

Front

How can you tell the relationship between weight is directly proportional to the extension between 0N and 1N?

Back

The graph is straight and goes through the origin.

Front

When investigating insulation properties of different materials, what is the dependent variable?

Back

Temperature of water

Front

Independent variable when investigating insulation properties of number of layers of a material.

Back

Number of layers of material

Front

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

Back

Systematic error

Front

Density

Back

The mass per unit volume

Front

Which of the following is the least dense? Air, Liquid, Aluminium, Copper

Back

Air

Front

As the resistance in a circuit increases, the electric current __________.

Back

decreases

Front

What type of circuit is pictured?

Back

series

Front

is the opposition to the flow of charges in a material.

Back

Resistance