Chapter 1 Notes – About Science (copy)

What is science?

A body of knowledge and an ongoing human activity that seeks to understand the laws of nature.

What do scientific measurements signify?

They are a hallmark of good science indicating how much one knows about something.

Who was Eratosthenes?

An ancient Greek mathematician who calculated the Earth's diameter around 235 B.C.

What is the diameter of Earth according to Eratosthenes?

Approximately 8,000 km, based on the distance measurement of 500 stadia between Alexandria and Syene.

What does the term 'hypothesis' mean in science?

An educated guess that is presumed factual until supported by experiment.

What differentiates a 'law' from a 'theory' in science?

A law is a repeatedly tested hypothesis that has not been contradicted, while a theory is a synthesis of well-tested hypotheses that explains a large amount of information.

How is mathematics related to science?

Mathematics is considered the natural language of science, providing clear expression of scientific ideas.

What enhances the scientific attitude?

Inquiry, experimentation, and a willingness to admit error.

What is the role of technology in relation to science?

Technology uses scientific knowledge for practical purposes and tools for further exploration.

How do science and art differ in focus?

Science deals with the natural order and recording phenomena, whereas art involves interpretation and expression of human experience.

What is the significance of measurements in science?

Measurements help quantify and provide knowledge about physical phenomena, ensuring data is reliable.

Who was Aristarchus?

An ancient Greek astronomer who researched the distance and size of the Moon.