CK12 Earth Science

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Contents ...

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1 What is Earth Science? 1.1 Nature of Science 1.2 Earth Science and Its Branches 2 Studying Earth’s Surface 2.1 Introduction ...

http://www.ck12.org vi ...

Chapter 1 What is Earth Science? 1.1 Nature of Science Lesson Objectives Explain the importance of asking questions. State the ...

Asking Questions Why is the sky blue? How tall will this tree grow? Why does the wind blow so hard? Will it be cold tonight? How ...

Figure 1.1: The Scientific Method. ( 2 ) ...

Figure 1.2: Soil Erosion ( 7 ) ...

Research Before we go any further, it is important to find out what is already known about the topic. You can research a topic b ...

No-till farming will decrease the soil loss on hills of similar steepness as compared to the traditional farming technique becau ...

had a different slope, then it could be the angle that affects the erosion, not the farming technique, for example. These are th ...

describesthesituationobserved. Inanycase, dataisusedtohelpusdrawlogicalconclusions. Conclusions After you have summarized the re ...

Scientific Models Many scientists use models to understand and explain ideas. Models are representations of objects or systems. ...

Figure 1.5: The Earth’s Center. ( 9 ) ...

knowledgeandmustincorporatenewknowledgethatmaychangeitasknowledgeisacquired. The origin of the moon, for example, is explained b ...

Models are a useful tool in science. They allow us to efficiently demonstrate ideas and create hypotheses. They give us visual o ...