1. Observation vs. Inferences Earth Science

2. Observation  Information about an object or action that is generated by using one’s senses  Something that you see, hear, taste, smell or touch.

3. 2 Types of observations Qualitative  An observation using relative terms or words that produce a general description  Examples: It’s sunny, windy, fast, slow, green, etc.

4. 2 Types of observations Quantitative  An observation expressed in absolute terms or words with numeric values or defined characteristics  Examples: It’s 73 o F, a 15 mph wind, 11:09 pm, etc.

5. Inference  A statement or judgment that is made using the information gathered by an observation.  An attempt to explain your observations. - The “likely” reason.

6. What’s This? The organism has legs that are much longer than its short arms. Observation

7. What’s This? The organism has brown fur similar to that of a bear. Observation

8. What’s This? The organism probably uses the fur to stay warm in this cold environment. Inference

9. What’s This? The organism was not aware of my presence because it did not run away. Inference

10. What’s This? The organism must be sick because he is barely moving. Inference

11. The organism picks up food using a long tongue that reaches the ground. Observation

12. example:

13. Observation vs. Inference  Observation: –There are small footprints in the snow.  Inference: –A girl walked through the snow here.

14. Make one observation and one inference about the picture Stage 1

15. Make one observation and one inference about the picture Stage 2

16. Make one observation and one inference about the picture Stage 3

17. Review  Observation –Something that you see, hear, smell, taste or touch.  Inference –An attempt to explain your observations.

18. The End