Objectives • Describe methods of investigation. • Research • Observation • Experimentation • Identify benefits of science in the world around you. • Describe jobs that use science.
Scientists are… • Curious • They are always asking questions. • Observant • They look closely and study the world around them. • Creative • They develop possible reasons for things they see and plan tests to see if their ideas hold up. • Skeptical • They don’t accept explanations/answers unless it is based on evidence and logical reasoning. • They even question their own conclusions. …like detectives trying to solve a crime.
Scientists All Around You • GeochemistA person who specializes in the chemistry of rocks, minerals, and soil. • Mechanic A person who uses science to solve problems with machines. • OceanographerA person who studies the ocean, including waves, currents, plants, animals, and the ocean floor. • Zoologist A person who studies the lives and needs of animals. • Meteorologist A meteorologist is a person who studies the atmosphere. • EcologistAn ecologist is a person who studies a community of organisms and their nonliving environment. • Science Educator A person who teaches science to others.
Scientists All Around Youcont. • VolcanologistA volcanologist is a person who studies volcanoes. • Science IllustratorA science illustrator is a person who draws scientific diagrams. • Environmental Scientist A person who studies how humans interact with their environment. • Cartographer A person who makes maps of the Earth’s surface. • EngineerA person who puts science to practical use by designing buildings, bridges, roads, electronic devices, medical equipment, etc. • AND MANY MORE
Ben Franklin Project • What do you know about Ben Franklin? • Groups of 3 will research Ben Franklin on the Internet • Let’s go over the details
Wanted: Famous Scientist • Research a scientist Let’s go over the details… • Follow the requirements and rubric closely • Due by:
Mysteries and Problems • Scientists are often much like detectives trying to solve a mystery. • One such mystery occurred in 1996 when Japanese scientists were looking through historical records. • They reported finding accounts of tsunami that had smashed the coast of the island of Honshu on January 27, 1700. • What had triggered these huge ocean waves?
The Investigation-Searching for Answers • The scientists suspected that an earthquake along the coast of North America was to blame. • Based on the size of the tsunami, the earthquake had to have been an extremely powerful one, sending waves rolling all the way across the Pacific Ocean. • Could evidence be found for such a large earthquake?
The Investigation-Gathering Evidence Evidence of a large earthquake in the distant past did seem to exist along the coasts of Washington and Oregon; however, dating the earthquake to a specific year would be difficult.
Hypothesis- Possible Solution • One scientist thought he knew how the earthquake could be dated. • He made an educated guess, called a hypothesis, that tree rings in the drowned trees could be used to determine when the earthquake occurred.
Hypothesis- Possible Solution • Tree ring data showed that the trees had died or were damaged after August 1699 but before the spring growing season of 1700. • Tree ring evidence put the date of the earthquake in the same time period as the tsunami on Honshu.
Importance of Solving the Mystery • In addition to solving the mystery of what caused the tsunami, the tree rings also provided a warning for people living in the Pacific Northwest. • Scientists warn that it’s only a matter of time until another huge quake occurs. • Scientific knowledge continues to change as scientists develop better instruments and testing procedures. • As it changes, scientists have a greater understanding of nature.