Energy can be changed from one form to another. 1.2.5 Visible light behaves in a variety of ways. Interactions of force and mass cause predictable changes in motion. There is evidence that Earth was formed as part of the solar system about 4.5 billion years ago. Monitoring the sun, moon, and planets reveals patterns.
Earth is changed over time by different natural and human forces.
1.3.4 Changes in Earth's physical environment over time have influenced changes in life forms. Geologic time can be estimated . Science Indicators 2.1 Generate a consensus based on data. 2.2 Design a scientifically valid experiment to address a question or problem. 2.3 Accept peer review of your data.