1.10. Scope of Physics http://www.ck12.org
FIGURE 1.12
Examples of how matter and energy interact.Q:Based on the examples inFigure1.12, what might be other examples of energy and matter interacting?
A:Like the strings of cello, anything that vibrates produces waves of energy that travel through matter. For example,
when you throw a pebble into a pond, waves of energy travel from the pebble through the water in all directions.
Like an incandescent light bulb, anything that glows consists of matter that produces light energy. For example,
fireflies use chemicals to produce light energy. Like a moving tennis racket, anything that moves has energy because
it is moving, including your eyes as they read this sentence.
Summary
- Physics is the study of energy, matter, and their interactions. It is concerned with matter and energy at all
levels—from the most fundamental particles of matter to the entire universe. - Physics can help you understand just about everything in the world around you. That’s because everything
around you is matter and has energy.
Vocabulary
- physics: Study of energy and how it interacts with matter.
Explore More
Watch the video at this URL, and answer the questions at the end.