Test Answers on Earth Science Flashcards

Bohr Model A model of an atom, proposed by Niels Bohr, in which a small positively charged nucleus is surrounded by orbiting electrons, similiar to a miniature solar system Heisenberg Uncertainty Principle The physical limitation that the product of the position and the momentum of a particle cannot be smaller than a well-defined value, Planck’s […]

Precambrian Name for the time in earths early history that accounts for ninety percent of earth’s time, but only cellular organisms lived. Paleozoic Era the part of geologic time 570-245 million years ago ; invertebrates, fishes, amphibians, reptiles, ferns, and cone-bearing trees were dominant Mesozoic Era middle life (245-144 million years ago); rise of mammals […]

The ________ drives the move to the suburbs from cities. desire to live in less stressful, more peaceful park-like conditions All of the following factors have contributed to movement of people to suburbs except ________. greater availability of mass transit The world’s urban populations are ________. growing faster than the population as a whole American […]

Cyanobacteria, forming atmosphere Earliest life forms (such as ___) were influenced by the climates produced by the ______ ______ and oceans of Earth Volcanic Activity, extremely difficult, did not During the Precambrian time ____ ____ was one of the most natural events but lava flows, ash clouds in the atmosphere, and heat made conditions for […]

coccolithophores biogenous sediment halite hydrogenous sediment metal sulfides hydrogenous sediment siliceous ooze biogenous sediment tektites cosmogenous sediment ice rafting associated with glacial deposits turbidite associated with submarine canyons and deep-sea alluvial fans siliceous ooze does not fit Describe the process of how a deep-sea drilling ship such as the JOIDES Resolution obtains core samples from […]

population ecology study of the biotic and abiotic factors that affect population size, density, distribution, and age structure population a group of individuals of a single species that occupy the same area at the same time what are 2 important characteristics that a population includes density (amount of individuals) and dispersion (how it’s spread out) […]

Although we can divide the history of the universe into many distinct \”eras,\” sometimes it’s useful just to have a broad perspective on what events occurred in the very early universe and what events occurred later. Listed following are events that occurred either before or after the first five minutes in the history of the […]

The ________ period was a time of major extinctions, including 75 percent of amphibian families. Permian During the early Paleozoic era, South America, Africa, Australia, Antarctica, India, and perhaps China comprised the vast southern continent of ________. Gondwanaland The most common Precambrian fossils are ________, layered mounds of calcium carbonate. Stromatolites During the ________ era, […]

Which of the following has your \”cosmic address\” in the correct order? You, Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe. Using the ideas discussed in your textbook, in what sense are we \”star stuff\”? Nearly every atom from which we are made was once inside of a star. How are galaxies […]

The Sun’s path, as viewed from the equator, is highest in the sky on _________. the spring and fall equinoxes For most of history, the lack of observable stellar parallax was interpreted to mean that _________. Earth is stationary at the center of the universe Which of the following statements about the celestial sphere is […]

The main reason that most professional research telescopes are reflectors is that: large mirrors are easier to build then large lenses Primary purpose of astronomical Telescope? to collect a lot of light and bring it to focus Most important advantage of CCD’ over film is? they record much more light in a given exposure time […]

______, ________, and ________ build up structures on the terrestrial planets, while ______ tears them down a.impacts, erosion, volcanism; tectonism b. impacts, tectonism, volcanism; erosion c. tectonism, volcanism, erosion; impacts d. tectonism, impacts, erosion; volcanism ANSWER B IMPACTS, TECTONISM, VOLCANISM; EROSION If crater A is inside crater B, we know that a. crater A was […]

Assuming that other planetary systems form in the same way as our solar system formed, where would you expect to find terrestrial planets? Terrestrial planets will likely be located nearer the planetary system’s star than any jovian planets. Which planet is approximately halfway between Pluto’s orbit and the Sun? Uranus, the seventh planet from the […]

Part A The history of the universe can be divided into seven major phases. Taken together, these phases make up the cosmic evolutionary scheme—the continuous transformation of matter and energy that has led to the appearance of life and civilization on Earth. Rank the phases in the history of cosmic evolution from earliest to most […]

Compaction will be the most significant lithification process for which of the following rocks? Shale T/F: Folding and deformation will produce bituminous coal. False T/F: The raw material for coal is dead marine organisms. False Which rock is the most abundant chemical sedimentary rock? Limestone ________ processes such as evaporation and chemical activity can precipitate […]

made when sediments fill in a cavity made when an object decayed and the sediments harden into rock cast Index fossils are the remains of species that existed on Earth for relatively short periods of time. true What are index fossils used to determine? the age of the surrounding rock layer Preserved animal tracks are […]

Sizes of universe- largest to smallest The universe, the local supercluster, the local group, the Milky Way Galaxy, our solar system, the sun, Jupiter, earth Distances from longest to shortest The distance from the Milky Way Galaxy to the Andromeda Galaxy, The distance from the sun to the center of the Milky Way Galaxy, The […]

1. What is the main mechanism by which the lower atmosphere of Earth is heated? a. Sunlight heats Earth’s surface and the resultant heat is transferred to the atmosphere by infrared radiation and convective gas motions. b. Conduction carries heat from Earth’s interior to the surface where conduction in the lower atmosphere transfers this heat […]

1) Mesozoic Era 2) Precambrian Time 3) Cenozoic Era 4) Paleozoic Era 1) b 2) d 3) a 4) c What is a Period A unit of geologic time that subdivides eras. What is Geologic Time Scale A record of the geologic events and the evolution of life forms as shown in the fossil records. […]

Part A – Ranking Task Consider the indicated events in the history of the universe that have helped make human life possible. Rank the events based on when they occurred, from longest ago to most recent. To rank items as equivalent, overlap them. Note: If two events occurred within seconds of each other, rank them […]

Besides water, what does the water cycle transfer around the earth? latent heat energy Which statement below is not a way in which water affects the earth and the living things upon it? Water is the power source that keeps the water cycle moving through all parts of the planet. Which property helps water to […]