Unit 2: Astronomy

Unit 2 AstronomyObjectives

100S.SI.3.D.2. Compare and contrast the geocentric and heliocentric models of the universe.100S.EMR.1.A.1. Define a scientific model100S.EMR.1.A.2. Explain the uses and limitations of a scientific model.

Agenda

IN: ModelsTHROUGH: Model NotesOUT: Double Bubble MapASSESSMENT: Exit Ticket (with your notes!)

Agenda

In: What are models? Through: Notes on heliocentric and

geocentric models Out: Venn Diagram

TITLE: Scientific ModelsPage: Date: 2/19/13Objective: Define scientific model

Compare and contrast geocentric and heliocentric models.

Scientific Models

A scientific model is a simplified representation of a theory or a concept

Models are used when it is either impossible or impractical to create experimental conditions in which scientists can directly measure outcomes.

Scientific Models

Models can be used to explain observations and make predictions.

Models are generated by selecting the key ideas or features of a process in a logical manner.

What do you observe about this water cycle model?Where can you predict rain will fall?

Scientific Models

Can take the form of a diagram, physical model, or a mathematical equation.

What is astronomy?

Astronomy is the study of the universe.

The Ancient Greeks contributed significantly to the understanding of the universe. They used philosophical arguments and observational data to explain natural phenomena.

Geocentric Model Invented by the

ancient Greeks The moon, sun, and

other planets– Mercury, Venus, Mars, and Jupiter– orbit the earth

http://astro.unl.edu/naap/ssm/animations/ptolemaic.html

Heliocentric Model

Nicolas Copernicus and Galileo proved the Geocentric model wrong

States that the Earth and other planets orbit around the sun

http://www.youtube.com/watch?v=iiBIFlvu-X0