Lesson 042 Learning Goal: (You should be able to…) Describe the history of geology and its content Describe Earth’s ‘profile’ Success Criteria: (Can you …) Write a paragraph about geology? Create a ‘profile’ page with ‘fun’ facts about Earth?

How to organize lesson 042 The lessons Agenda was: W to T Earth’s profile

Vocabulary Terms Direct observation. Indirect observation. Inference. Seismic Waves Crust Mantle Outer Core Inner Core

Answer the following on lined paper… Write to Think 042 Answer the following on lined paper… What are the metric units for density? (It could be pounds per cubic foot in American customary units) What are the metric units for speed? (It could be miles per hour in American customary units) What making as your ‘profile’ for Earth? What will it look like? How many different facts found so far? How many different sources have you found?

Profile of Earth You will create a ‘profile’ of Earth It can be like: a Facebook page a job application or resume a wanted poster a ‘lost and found’ poster a sports personality sheet other?

Examples:

Examples

Examples:

Examples:

What to include in your profile of Earth: Picture (s) Shape Volume Mass Circumference Radius and diameter Density Rotation speed Position relative to the sun Orbit distance Orbit (revolution) speed Angle of tilt Composition % of water & land Atmosphere thickness Crust thickness Anything else?

Things to consider: All units must be in metric ( you can use American imperial as well) You must reference all sources You need at least three credible ones! Content is more important than style! Any electronic format that can be shared with me and is school appropriate. Questions?

What You’ll Learn Classification of Earth’s layers How can Earth’s layers be described and classified using qualitative and quantitative observations? How do properties of Earth’s layers affect the Earth as a whole? Earth Models and Theories How have models of inside Earth changed over time? How does the nature of science allow for ideas and theories to change? Geologic Time How have human’s been able to determine the age of the Earth? How have scientists classified the sections of Earth’s history? Fossil Dating investigation How can the age of an unknown fossil be accurately predicted? Plate Tectonics How did the theory of plate tectonics come about? How can the events and structures on Earth’s surface be explained by the layers and properties below?

End of Lesson

Direct vs Indirect observation You look at grass, you conclude: this is grass and it is green. You have observed the green grass. Direct. You know that in plants green color is caused by chlorophyll. You look at grass. You conclude: this grass is green, so it has chlorophyll in it. You have observed chlorophyll. Indirect. In case of direct observations you sense the phenomenon in question by your sensory organs directly. In indirect observations, you sense something intermediate that implies the phenomenon in question. These intermediate things can be many. The more intermediate things there are, the more careful you have to be with your conclusions.

Direct vs Indirect observation Direct observations involve looking at the actual behavior or occurrence rather than a result of that occurrence, which would be an indirect observation. For example, if you were interested in seeing how much candy was purchased by a particular neighborhood, you could gather the information in one of the two following ways: Direct observation: observe customers in a store and count how many bags of candy they purchase. Indirect observation: look through trash cans on garbage day to see how many empty candy bags are in each trash bin Indirect observation tends to be used when the data cannot be gathered through direct means, or when gathering the data through direct observation tends to be too expensive.