Earth Science - Chapter 1 - What is Earth Science Exam Questions with Complete Answers

Earth Science - Chapter 1 - What is Earth Science Exam Questions with Complete Answers What is Earth Science? - Answer-the name for the group of sciences that deals with Earth and its neighbors in space. Names of sub-divisions of Earth Science. (7) Total - Answer-geochemistry, geophysics, geobiology, paleontology, oceanography, meteorology, and astronomy. geology - Answer-study of physical and historic Earth. two kinds of geology - Answer-physical and historic What forms the Earth? (Physical Geology) - Answer-weather, volcanoes, earthquakes, formation of land Historic geology - Answer-fossils, a timeline oceanography - Answer-study of the composition and movements of sea water. meteorology - Answer-Global climates (weather), energy, and Earths motions and atmosphere. astronomy - Answer-the study of our universe and others. the nebular hyphothesis - Answer-suggests that the bodies of our solar system evolved from an enormous rotating cloud called the solar nebula. It was made up mostly of hydrogen and helium, with a small percentage of heavier elements. Inner planets (Earth, Mars and Venus) - Answer-were able to retain heavier gases. (water vapor and carbon dioxide) Outer Planets (Saturn, Jupiter, Uranue, and Neptune) - Answer-made of mostly hydrogen and helium and small percentages of water vapor, carbon dioxide, ammonia and methane. Layers of the Earth - Heating released, by colliding particles, produced some melting of interior of Earth ... - Answer-This allowed the denser elements (iron and nickel) to sink to Earth's center because of gravity. less dense elements .... - Answer-floated outward toward surface. As a result, Earth's interior is not made of uniform materials. the atmosphere and ocean were formed from .... - Answer-gaseous materials that escaped from Earth's interior. The Big Bang Theory - Answer-a huge explosion sent all the universes matter flying outward at great speed. Then cooled and formed galaxies. 13 to 14 billion years ago. Supernova is - Answer-the explosive death of a star. Nuclear fusion occurs producing atoms such as oxygen, carbon, and iron. Our sun and solar system are - Answer-debris scattered during a death of a star