People have been weighing objects forever, but it was the Greek people who first tried to figure out what weight is and how to explain weight. A Greek man named Archimedes said weight was determined by (opposition of buoyancy) whether objects sink or float. An Ancient Greek named Euclid was the first to say that “weight is the heaviness or lightness of one thing compared to another, as measured by a balance.” About 300 years ago, a scientist from England, Isaac Newton, determined that weight is the “force” of an object depending on the amount of stuff/matter the object is made of (mass) and the pull of gravity on the object. Objects weigh less on the moon than they do on Earth because there is less gravity (W=mg).
Science Process Skills:
- Identify properties of objects
- Question, explore, observe, record and share information
- Compare properties of one object to the properties of another object
- Argue based on evidence
- Use science tools to determine the weight of an object