Final answer:
Scientists do experiments to test their explanations and understand the natural world. They analyze the data and draw conclusions based on the evidence they have collected.
Step-by-step explanation:
Scientists need to do experiments to understand the natural world because it is not always obvious how things work. Through experiments, scientists can test their explanations, called hypotheses, and see if the results agree or contradict with their predictions.
Scientists analyze the data from their experiments and draw conclusions based on the evidence they have collected. The more experiments that agree with a hypothesis, the more likely it is to be accepted as a useful description of nature.