Lessons for Earth Scientists

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  • Carbon Dioxide at Record High Level - … the Earth. Scientists say the 400ppm level is a warning sign. They say we must (4) ____ number getting bigger. However, scientist James … of years. Pieter Tans, one of the scientists measuring CO2 levels, said human ( ) Earth. Scientists say the 400ppm level is a warning sign … . This was when there were no / non humans on the Earth. Scientists say the 400ppm level is a warning / warned sign. They …
    User Rating: Grade Level: , ESL
  • Nasa Telescope to Look for Other Earths - … powerful Kepler telescope will search for planets similar to the Earth. Scientists believe there are good chances of finding a planet like … powerful Kepler telescope will search for planets ____ to the Earth. Scientists believe there are good ____ of finding a planet like … powerful Kepler telescope will search for planets similar to the Earth. Scientists believe there are good chances of finding a planet like …
    User Rating: Grade Level: , ESL
  • Will It Happen Again? Examining Mass Extinctions on Earth - … the 3.8 billion years that life has existed on Earth, scientists have found evidence of at least five mass extinctions, including … what time scale have Earth's previous mass extinctions taken place? In a study, a team of scientists found that many plant … explanations have scientists put forth to explain why so many groups of organisms disappeared during this extinction? Do scientists agree on the …
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  • Sizing Up Species - … things? The sheer number of organisms living on earth is extraordinary. So far, scientists have identified about 1.7 million species worldwide … are one of the oldest life forms on earth. Scientists estimate that the earth is about 4 billion years old and that the … is often under debate, depending on how scientists interpret current research. For example, some scientists separate the monerans into two kingdoms: eubacteria …
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  • Could the Solar System Have Ten Planets? - … solar system. Scientists can use powerful telescopes to see objects that are more than a billion miles from Earth. Scientists agree that any … billion miles from Earth. (true, the object called 2003 UB313 is estimated to be 9 billion miles from Earth) Scientists agree that any object in space that is bigger than Pluto should be considered a planet. (false, scientists do …
    User Rating: Grade Level: K-2
  • Rock On! - … "methane greenhouse"? g. Do all scientists agree with Dr. Farquhar's conclusions? What criticisms have other scientists offered? 3. Ask students if … proponent of the theory of continental drift, was a famous Earth scientist (http://www.ucmp.berkeley.edu/history/wegener.html). Research the … by other scientists; Knows that scientists conduct investigations for a variety of reasons; Knows that investigations and public communication among scientists must meet …
    User Rating: Grade Level: 6-12
  • Searching for Oil: The Role of... - … these natural resources are discovered below the earth. Students will explore the role of scientists in finding oil and natural gas, and … time under the earth's surface.) Why are "virtual drilling" and visualization rooms so important to geoscientists? (They allow scientists to see … : Oil Exploration Jobs: An Overview AESEDA: Global Opportunities for Minority Earth Scientists Careers in the Geosciences Geoscience Careers and Employers Sloan Career …
    User Rating: Grade Level: 9-12
  • Asteroids - … of comets. History of Asteroid Collisions with Earth Scientists at NASA have been actively tracking near Earth asteroids (NEAs) to determine whether or … such a catastrophe on Earth. Lesson Closure (Return to Contents) Scientists and engineers are very interested in near-Earth asteroids because we know … million years away), the Earth could be impacted by an asteroid collision. It is important that scientists and engineers know what to …
    User Rating: Grade Level: 6-12
  • Rocks & More - … a building project. * Teacher: Have an earth scientist visit the classroom to discuss how the earth has changed over the years. * Teacher: In … rock all the way down to the center of the earth. Scientists divide rocks into three groups: 1. Igneous rocks are made … . * How did scientists form ideas of the four layers of earth? Find the answer at "VolcanoWorld: Content Center: The Earth's Layers" at …
    User Rating: Grade Level: 3-8
  • Fantastic Fossils - … the Earth, plants, and animals have changed over time. They also help us better understand the history of the Earth. Paleontologists (scientists who … some change in the Earth. How do fossils help us learn about the history of the Earth? Scientists describe the Earth's long history … reservations, some sites allow students to participate in the dig. Scientists who study fossils are called paleontologists. Have students research what …
    User Rating: Grade Level: 6-8
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