After reviewing the Scientific Method, PreFirst scientists applied the process to investigate rust. Click here to learn more about the Scientific Method.

First, we observed this metal can and discussed why it might have rusted. These young scientists thought it might be old or dirty.

Then, we looked at fifteen metal items and each scientist made a hypothesis to answer the question: Will the item rust?  They brought the tray of objects back to their classroom to observe. Try this investigation at home with items you collect around your house. Ask all family members to make hypotheses.

Why is Mars called the red planet? Click here to learn why. If we place steel wool in water, will it rust and look like the surface on Mars? Our control bag does not contain water.