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psc201 physical science f00 midterm1

psc201 physical science f00 midterm1 - e w emf/us «Sit/3 i...

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Unformatted text preview: e w. emf/us: «Sit/3.. i n PSc 201-01 Oceanography Fall 2000 MIDTERM #1 Name _ A Please write the apprOpi-iate word or words in the blank on the left. ? m I M 7, I; d 1. Write down the formula for the force of gravity (F) between two masses in terms of the two masses (m1 and m2). their Separation distance (d) and the gravitational constant (G). l 2. When combining with other elements. the element oxygen likes to take _ electrons from its partners. ' 3. The valence of hydrogen is ____. it 4. How many kinds of elements were produced in the original Big Bang birth or the Universe? £42 M 5. All heavier elements were produced in the __ of _. 31.21 £ [I D 6. Elements combine together to form molecules by sharing _. l D I i l L 7. 'When the things shared (previous answer) are not shared equally, but rather one part of the molecules holds them most of the time, the bond is said to be _. SN % k I i 8. When an object is immersed in water, it is buoyed upward by a force that is equal to the ____ of the water that it displaces. i Fluids tend to flow away from regions of higher pressure and towards regions of lower pressure. The force that causes this motion is called a(n) __ _ force. 10. "Work" is equal to the product of __ times ____. ‘ n 0 ~ 11. Ocean and air currents that are traveling in straight lines appear to us to curve, because the Earth is spinning. This is called the _ effect. of! k [f A 12. Each level through which food is passed is called a _ _. K M 13. In the dark deep ocean waters, there are some places where certain types of bacteriaproduce food without any sunlight at all. They live in and near ___ ____ on the ocean floor. 14. The word that we use to identify small pieces of dead and decaying organic matter is _. 15. Most organic matter in the ocean is _ (dead. alive). SU 'ii' 16. The two things that most severely constrain the production of m in the ocean are the MM abtmdancesof__and_. 2X at I 17. The two things that most severely constrain the distribution of m in the ocean are the ' S 2982 abundances of_ and ___. fig—5 bi “log 18. TheEarthisabout__years old. 19 The depth of the ocean basins is typically . (Include units.) .. ‘, .' 'l .‘ ‘ ' - '- ‘ ‘ ' 20. One way of measuring the rate of productivity by microscopic organisms in a sample of ocean ' ' ‘ fi water is by monitoring the concentration of dissolved _. b¥q “[01” K Mtg— 21. A region where the water temperature changes rapidly with depth is called a _. emit 3 22. _ are catalysts or things that facilitate certain chemical reactions within a cell. K ‘6 23. The average productivity (grams of carbon per square meter per year) on land is about *_ W __ (larger, smaller) compared to the average productivity in the oceans. Mrs was E : a 48. The only phylum of worms that are m are the _ worms. ' I 49. Give common names of any two echinoderms. _ - 5 6: dQJ SYW 50. Give common names of any two mollusks. «- 6:9 W r £5 < F2 Inn’ 8 51. Dolphins are a type of _ (pinniped, whale, sea cow). ML" 52. Organisms that live in __ (warm, cold) waters tend to be more colorful and live shorter lives. a 53. Plankton that produce food are called __H—plankton. . X I! l o " 54. Plankton that are plankton only during part of their life cycle are called _—plankton. WM. Organisms that live on or in the ocean floor are called _. LEILQM K E Q E if :E 56. Other than vertebrates, the only other nekton in the ocean are the _. i< the marine organisms, the largest total living biomass is in __ (pelagic, benthic) - organisms. La 58. Of the marine organisms, the largest diversity of species is in __ (pelagic, benthic) organisms. 59. Compared to other oceanic regions, estuaries tend to be more __ (stable, variable) and have 32 My I Q ____(more. less) food prOdUction per square meter of area. \( K K 60. Reefs that grow on the flanks of islands or continents, grow outward toward the ocean, leaving a _ between the active reef and the mainland. K 61. ____-plankton tend to undergo daily vertical migration that brings them closest to the surface at K 1’ 'b “What time of day or night? 62. What is the most abundant chemical element in the Universe? 63. What is the ma most abundant chemical element in the Universe? 64. _ is anything that has the ability to do work. _ K [J 65. The tendency of denser materials to sink into the Earth and the lighter materials to rise towards the smface is called___ ____. I lg, 4970 E I The Earth's radius is about _. (Include units.) W 67. The Earth's crust is of _ distinct types. “H fi . 68. The _ __ is the region of the Earth's interior that is molten. tW/So M ‘L ’i’ 69. The Erth's core is made primarily of what two materials? 51 mg i. fi 70. The density of water is __ grams per cubic centimeter. % 2 71. The density of the Earth's crust is about ____ grams per cubic centimeter, on average. " . Heating from beneath causes convection in which region of the Earth's interior? ...
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