1. Earth Science August 31, 2011 Bellringer: Place in your Homework A 10 ml sample of a substance has a mass of 20 g. What would be the mass of a 100 ml sample of the same substance?

2. Earth Science Objectives: Determine the difference between an observation and inference Agenda Go over Density Worksheet Observation/Inference notes Mr. Peanut activity Review for test Homework: Turn in Measurement lab Study for test

3. Earth Science Observations recognizing and noting some FACT to gather information about the world

4. Earth Science You make observations using your five senses Sight - Detects color, size, and shape. Hearing - Reaction to moving air Taste - Sweet, salty, bitter, sour. Smell - Reaction to gases. Touch - Reaction to pressure, temperature. We are not sensitive enough to detect high sounds or radio waves.

5. Earth Science Observations must be specific and accurate, not relative, so that it means the same to everyone. Example: –Incorrect - the burning bag smelled nasty –Correct - the burning bag smelled similar to rotten eggs

6. Earth Science Inference a possible explanation or guess about an observation Example: you leave the movie theater and see the ground is wet so you infer that it rained.

7. Earth Science Look at the picture below and write three observations and two inferences

8. Earth Science Mr. Peanut Wait for directions When making observations be as specific as possible!

9. Earth Science Review for Test http://sciencereviewgames.com/srg/s ubjects/nos.phphttp://sciencereviewgames.com/srg/s ubjects/nos.php

10. Earth Science Ticket out the Door Make three flashcards to begin studying for tomorrow’s test! Reminder: –Test is Tomorrow –Topics include: »Scientific method »Graphing »Measurement »Density »Observation/inference