Here are the "must-haves" for an effective Physical Universe investigation:

• Most of the projects submitted in this category will be traditional scientific investigations. Use of the scientific method is expected.
• Please include a log of your progress through your whole process. This can be in electronic form or using a log-book.
• Your display should summarize all of your work through the process and needs to highlight each step in the scientific method.
• Please include graphs and/or images where appropriate.
• Include materials lists, cited sources for research, procedures, etc.
• Include the real-world application. Why did you choose this experiment?