Introduction to Earth Science : EARTH SCIENCE: Chapter 1

Questions: ???? What is the goal of…. Art Architecture Politics Science……….????? Describe how different cultures contributed to our modern science?????

The Scientific Study of Earth China Greeks s/thales.html s/thales.html Mayans The Mayans also were gifted mathematicians who independently developed the concept of zero, and astronomers who deduced that a solar year was slightly more than 365 days. Despite these achievements, the Mayans and other Meso-American cultures failed to discover the utility of the wheel. Others…myths and legends for events…

Branches of Earth Science Geology Oceanography Meteorology Astronomy Environmental Science Interconnectedness….

Practice Quiz ___1. Predicts the weather ___2. studies air pollution ___3. Plans water supplies for cities and towns ___4. studies the eruption of volcanoes ___5. Measures the depths of the sea ___6. Studies meteorites to determine if life exists elsewhere A- Astronomy M- Meteorology G- Geology O- Oceanography

Scientific Method Make observations Form hypothesis Test hypothesis Observe Experiment Draw Conclusions Alter or Form New Hypothesis Variables: Dependent and Independent Control Group

The Extreme Future The Extreme Future by James Canton NanoTech by James Canton NanoTech

1. An example of a sensor with ______ accuracy and ______ precision Suppose a lab refrigerator holds a constant temperature of 38.0 F. A temperature sensor is tested 10 times in the refrigerator. The temperatures from the test yield the temperatures of: 39.4, 38.1, 39.3, 37.5, 38.3, 39.1, 37.1, 37.8, 38.8, This distribution shows no tendency toward a particular value and does not acceptably match the actual temperature.

2. An example of a sensor with ______ accuracy and ______ precision Suppose a lab refrigerator holds a constant temperature of 38.0 F. A temperature sensor is tested 10 times in the refrigerator. The temperatures from the test yield the temperatures of: 37.8, 38.3, 38.1, 38.0, 37.6, 38.2, 38.0, 38.0, 37.4, This distribution shows no impressive tendency toward a particular value but each value does come close to the actual temperature.

3. An example of a sensor with ______ accuracy and ______ precision Suppose a lab refrigerator holds a constant temperature of 38.0 F. A temperature sensor is tested 10 times in the refrigerator. The temperatures from the test yield the temperatures of : 39.2, 39.3, 39.1, 39.0, 39.1, 39.3, 39.2, 39.1, 39.2, This distribution does show a tendency toward a particular value but every measurement is well off from the actual temperature.

4. An example of a sensor with ______ accuracy and ______ precision Suppose a lab refrigerator holds a constant temperature of 38.0 F. A temperature sensor is tested 10 times in the refrigerator. The temperatures from the test yield the temperatures of: 38.0, 38.0, 37.8, 38.1, 38.0, 37.9, 38.0, 38.2, 38.0, This distribution does show a tendency toward a particular value and is very near the actual temperature each time.

Purpose Define the purpose(s) of this lab activity A B C a b

Procedures List of materials Methods / Directions Give steps of how to replicate the lab

Earth Science Lab (8/31/2010) Group 1Group 2Group 3Group 4AverageActual%Error 1 Hematite Calcite Graphite Chalcopyrite Galena How Accurate? How Precise? % error = (accepted value-experimental value/ E.V. ) x 100

Results Give YOUR groups results for each mineral’s specific gravity and YOUR groups error. What was your class average specific gravity for the minerals and YOUR class error.

Conclusion Evaluate the accuracy, precision, and error for your group and class on this lab activity Did your data support the following statement… the higher the specific gravity the higher the error… support. Extra credit: What material do you think cube A,B, and/or C is made of… support your reason