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Scientists - PowerPoint PPT Presentation

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Scientists 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

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Presentation Transcript
  • Describe methods of investigation.
      • Research
      • Observation
      • Experimentation
  • Identify benefits of science in the world around you.
  • Describe jobs that use science.
scientists are
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
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 you cont
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.
ben franklin project
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
Wanted: Famous Scientist
  • Research a scientist

Let’s go over the details…

  • Follow the requirements and rubric closely
  • Due by:
mysteries and problems
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 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
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
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 solution13
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
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.