Exam 1 Results: Understanding Solar System and Earth Science

Exam 1 Results  Correct answers are hidden. Score for this quiz: 48 out of 50 Submitted Sep 6 at 7:09pm This attempt took 55 minutes. 1 / 1 pts Question 1 The scientific theory for the origin of our solar system, involving the condensation and collapse of interstellar material in a spiral arm of the Milky Way galaxy, is the ____________________ theory. solar nebula 1 / 1 pts Question 2 The zone between the core and the crust is the: innersphere. lithosphere. mantle. convection center. molten zone. 1 / 1 pts Question 3 Incorrect Incorrect 

Earth formed ____________________ billion years ago. 4.5 1 / 1 pts Question 4 According to the theory of organic evolution, all living organisms are related, and they descended with some modifications from organisms that lived in the past. True False 1 / 1 pts Question 5 A combination of related parts that interact in an organized fashion is a(n) ____________________. system 1 / 1 pts Question 6 Overpopulation will affect many Earth systems, but there is enough fresh water for many billions of people. True

False 1 / 1 pts Question 7 Incorrect Incorrect The two types of crust are ____________________ and ____________________. oceanic and continental 1 / 1 pts Question 8 Fossils are: useful for reconstructing past environmental conditions. evidence that evolution has occurred. evidence that Earth has a long history predating humans. the remains or traces of once-living organisms. all of these 1 / 1 pts Question 9 The Big Bang took place approximately ____ years ago. 140 billion 40 billion

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14 billion 14 million 4,000 1 / 1 pts Question 10 The theory that all living organisms are descendants of different life forms that existed in the past is called: organic evolution. astrology. paleontology. plate tectonics. natural selection. 1 / 1 pts Question 11 Global warming is caused by increased concentrations of ____________________ in the atmosphere. greenhouse gases 1 / 1 pts Question 12 The Jovian planets are:

Jupiter, Saturn, Uranus, and Neptune. Mercury, Venus, Earth, and Mars. Earth, Mars, and Jupiter. Uranus, Neptune, and Pluto. Mercury, Earth, Mars, and Pluto. 1 / 1 pts Question 13 Earth's core is probably: composed of rock with high silica content. hollow. molten throughout. composed of potassium and aluminum rich silicates. composed mostly of iron and nickel. 1 / 1 pts Question 14 Theories are formulated through the process known as ____________________. scientific method

1 / 1 pts Question 15 Science does not utilize beliefs or supernatural explanations because they have been proven to be true and so science isn’t needed. none of these. have been proven to be untrue. cannot be tested. 1 / 1 pts Question 16 A hypothesis is thought to be the truth by most scientists. a tentative explanation. a description of something that happens without fail. a guess. 1 / 1 pts Question 17 The study of paleomagnetism is possible because: the magnetic minerals in rocks create the Earth's magnetic field. most rocks contain no magnetic minerals. the magnetic minerals in rocks disrupt the Earth's magnetic field.

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the magnetic minerals in a cooling lava point toward the north magnetic pole. none of these 1 / 1 pts Question 18 The mechanism for plate movement is: conduction of heat from the core. friction created by tidal forces generated by the Moon. conduction of heat within the mantle. convection of heat within the mantle. convection of heat within the core. 1 / 1 pts Question 19 At divergent plate boundaries, the operating forces are: compressional. lateral shearing. tensional. thrusting. normal.

0 / 1 pts Question 20 Incorrect Incorrect The type of plate boundary that runs through California is called ____________________, and the name of this plate boundary is the ____________________. convergent plate boundary, transform plate boundary 1 / 1 pts Question 21 The physical phenomenon that results from the spin of electrons that is found in some solids, particularly iron, and moving electricity is known as ____________________. The zone around substances with this property is called a ____________________. Magnetism, magnetic field 1 / 1 pts Question 22 The cause of magnetic reversals is a change in the structure of the Earth's inner core. True False 1 / 1 pts Question 23

Wegener proposed that the continents were once all together as a supercontinent he named ____________________, which then split into a northern supercontinent called ____________________ and a southern supercontinent called ____________________. Pangaea, Laurasia, Gondwana 1 / 1 pts Question 24 Studies of paleomagnetism document: changes in the Earth's gravitational field. how the inner/outer core boundary has evolved. how the mineral magnetite has varied through time. how the Earth's magnetic poles have varied through time. none of these 1 / 1 pts Question 25 The differing paleomagnetic records for each continent showed: each continent had its own magnetic pole during successive geological periods. that the magnetic poles for each continent had moved over geological time.

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that the magnetic poles have remained in one location and each of the continents has moved. that both the poles and the continents have moved over time. none of these 1 / 1 pts Question 26 Incorrect Incorrect At mid-oceanic ridges, hot magma rises from the ____________________ and forms new ____________________. mantle, oceanic crust 0 / 1 pts Question 27 Incorrect Incorrect Where divergent plate boundaries form beneath continental masses, low areas known as ____________________ form. continental rift zones 1 / 1 pts Question 28 Changes in the Earth's magnetic field have occurred throughout geologic time, and these are called magnetic reversals. True

False 1 / 1 pts Question 29 Deviations from the average strength of Earth’s present-day magnetic field are called ____________________. magnetic anomalies 1 / 1 pts Question 30 The subduction of cold, dense oceanic lithosphere into the mantle facilitates teh movement of plates by slab pull. True False 1 / 1 pts Question 31 The 2005 Indian Ocean tsunami, the eruption of Mount Merapi in 2010 and the 9.0 magnitude earthquake that struck Japan in 2011 occurred at the same type of plate boundary. True False

1 / 1 pts Question 32 At divergent plate boundaries, plates are moving ____________________. At these locations, new ____________________ forms. apart, lithosphere 1 / 1 pts Question 33 Isotopes of the same element have: different numbers of protons but the same number of neutrons. the same number of electrons and different numbers of neutrons. different numbers of neutrons but the same number of protons. different numbers of electrons but the same number of neutrons. none of the above 1 / 1 pts Question 34 ____________________ and ____________________ are mineral compounds that are commonly produced by animals and are known as calcium ____________________. Calcite, aragonite, carbonate

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1 / 1 pts Question 35 Native elements are among those that occur in concentrations known as ores. True False 1 / 1 pts Question 36 The atomic mass of an atom is defined as the sum of the number of its ____________________ plus ____________________. protons, neutrons 1 / 1 pts Question 37 Minerals of the amphibole group have their silica tetrahedra arranged in double chains. True False 1 / 1 pts Question 38 Incorrect Incorrect Different isotopes of the same element differ from each other because they have different ____________________.

neutrons 1 / 1 pts Question 39 The atomic number of an atom is determined by the number of ____________________ in its nucleus. protons 1 / 1 pts Question 40 A mineral's density is the ratio of its weight relative to the weight of an equal volume of pure water at 4 ° C. True False 1 / 1 pts Question 41 Mica and clay minerals have a platy crystal form because they have a sheet- like structure of silica tetrahedra. True False

1 / 1 pts Question 42 All minerals are compounds. True False 1 / 1 pts Question 43 Atoms of the same chemical element, carbon for example, always have the same number of ____________________ in the nucleus. protons 1 / 1 pts Question 44 Which of the following are all examples of minerals? bronze, steel, glass, aluminum, pencil lead gold, silver, uranium, lead, silica, iron copper, ice, quartz, topaz, diamond, corundum water, mercury, metallic hydrogen, limestone petroleum, coal, iron, feldspar, basalt

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1 / 1 pts Question 45 A neutrally-charged atom that becomes a positively-charged atom of the same element can be called a(n): positron. neutron. ion. isotope. none of the above 1 / 1 pts Question 46 Elements bond together to form molecules because they: are most stable when their outer electron shell is filled. need to have a positive charge. need to have a negative charge. are glued together by positrons. none of the above 1 / 1 pts Question 47 For a neutrally-charged atom to become a positively-charged atom of the same element, it must:

lose a proton. lose an electron. gain a proton. gain an electron. none of the above 1 / 1 pts Question 48 The United States is self-sufficient in petroleum. True False 1 / 1 pts Question 49 The most abundant rock-forming minerals are the nonferromagnesian silicates called the ____________________. feldspars 1 / 1 pts Question 50 The basic building block of silicate minerals is the silica ____________________.

tetrahedron Quiz Score: 48 out of 50

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Quiz History_ Exam 1

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