1. The number of coils of wire around the nail is positively correlated with the strength of the electromagnet.
2. The evidence from the graph shows a clear increase in the strength of the electromagnet as the number of coils of wire around the nail increases. This correlation indicates that the number of coils is a significant factor in determining the strength of the electromagnet.
A group of students built electromagnets using wire, nails, and a 6V lantern battery. They decided to design an investigation to test factors that they could change to make a stronger electromagnet. The following data is from one set of investigations. Use the graph to answer the questions:
1. Write a claim based on this data.
2. What evidence from the graph supports your claim?
1 answer