purpose three models that explain JJ Thomson's findings and evaluate them? What does this mean? are you suppose to make up your own or look to others?

The word is probably "propose" so it looks like you can get them from anywhee.

Sra

To purpose three models that explain JJ Thomson's findings means to propose or suggest three different explanations or theoretical frameworks that can account for JJ Thomson's discoveries and observations. These models should aim to explain the specific results, phenomena, or concepts associated with Thomson's work.

As for evaluating the models, you should critically assess or analyze each proposed model and discuss their strengths, weaknesses, and consistency with the experimental observations made by JJ Thomson.

When it comes to whether you should make up your own models or look to others, it depends on the context of your assignment or task. If you are asked to generate your own original models, then it is appropriate for you to propose your own explanations based on your understanding of the topic. However, if the question implies that you should explore existing models proposed by other scientists or researchers, then you should look to the established scientific literature and scholarly sources for those models.

In either case, it is important to support your explanations and evaluations with appropriate evidence, reasoning, and references to relevant sources.