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10,100 | NDQ_006431 | weathering and erosion | if a river in flood picks up a house and moves it downstream, this is | null | null | Multiple Choice | a. Chemical weathering, b. Mechanical weathering, c. Erosion, d. All of the above | c |
10,101 | NDQ_006432 | wegener and the continental drift hypothesis | based on his polar experiences, wegener thought the continents | null | null | Multiple Choice | a. Were joined into a single landmass that was near the North Pole., b. Could move like an icebreaking ship through ice sheets., c. Could not have been joined because glaciers would have originated in the oceans if they were., d. All of the above. | b |
10,102 | NDQ_006433 | wegener and the continental drift hypothesis | the continents were joined into a single landmass that has since broken apart, which wegener named | null | null | Multiple Choice | a. Rhodinia, b. Gondwana, c. Panthelassa, d. Pangaea | d |
10,103 | NDQ_006434 | wegener and the continental drift hypothesis | many of the best scientists of the day agreed with wegeners hypothesis even though he did not have a plausible mechanism for continental movement. | null | null | Multiple Choice | a. True, b. False | b |
10,104 | NDQ_006435 | wegener and the continental drift hypothesis | the reason scientists did not accept wegeners mechanism for continental drift is | null | null | Multiple Choice | a. If these forces were strong enough to move continents the planet would spin out of control., b. They calculated that centrifugal and tidal forces are too weak to move the continents., c. If the continents were plowing through ocean basins, sea level should be much higher than it is., d. None of these. | b |
10,105 | NDQ_006436 | wegener and the continental drift hypothesis | this drives continental movements. | null | null | Multiple Choice | a. Convection currents in the mantle, b. Centrifugal forces, c. Tidal forces, d. Horizontal heat conduction. | a |
10,106 | NDQ_006437 | wegener and the continental drift hypothesis | the heat source for plate motions is the mantle. | null | null | Multiple Choice | a. True, b. False | b |
10,107 | NDQ_006438 | wegener and the continental drift hypothesis | a convection cell explains a circular motion of | null | null | Multiple Choice | a. Warm material rising and cool material sinking., b. Cool material rising and warm material sinking., c. Deep material being squeezed by high pressure to the surface and surface material falling into the deep., d. Surface material becoming dense and sinking due to high pressure and deep material having less pressure and so becoming buoyant. | a |
10,108 | NDQ_006439 | wegener and the continental drift hypothesis | scientists rejected wegeners theory because | null | null | Multiple Choice | a. It didn’t explain the fossil evidence., b. It didn’t explain the puzzle-like fit of the continents., c. There was no plausible mechanism to explain continental movement., d. All of the above | c |
10,109 | NDQ_006440 | wegener and the continental drift hypothesis | where two adjacent convection cells rise to the surface, a continent could break apart and the pieces could move in the opposite direction. | null | null | Multiple Choice | a. True, b. False | a |
10,110 | NDQ_006441 | wegener and the continental drift hypothesis | the hypothesis of continental drift was ignored until new evidence was found that pointed to a mechanism. | null | null | Multiple Choice | a. True, b. False | a |
10,111 | NDQ_006452 | wind waves | waves break when they become too tall to be supported by their base. | null | null | Multiple Choice | a. True, b. False | a |
10,112 | NDQ_006453 | wind waves | water that is pushed in a pile near shore by storm winds causing sea levels to rise locally. | null | null | Multiple Choice | a. Massive Wave, b. Flood, c. Storm Surge, d. None of the above | c |
10,113 | NDQ_006455 | wind waves | waves get started when | null | null | Multiple Choice | a. Wind energy creates tiny ripples that are easier for later winds to catch onto., b. Wind gusts fast across a flat sea., c. A high pressure cell pushes down on the sea surface so that when it bounces back it starts waves., d. None of these. | a |
10,114 | NDQ_006456 | wind waves | in deep water, water molecules travel in a ________________ motion. | null | null | Multiple Choice | a. Back-and-forth, b. Up and down, c. Random, d. Circular | d |
10,115 | NDQ_006457 | wind waves | wave energy is lowest at the surface and increases with depth. | null | null | Multiple Choice | a. True, b. False | b |
10,116 | NDQ_006458 | wind waves | the energy contained in bottom of the wave is reduced due to friction with the shore. | null | null | Multiple Choice | a. True, b. False | a |
10,117 | NDQ_006459 | wind waves | the largest waves are built by | null | null | Multiple Choice | a. Very strong winds., b. Winds that blow steadily for a long period of time., c. Winds that blow over a long distance., d. All of these. | d |
10,118 | NDQ_006460 | wind waves | the water in a wave travels across the ocean to end up on a shoreline. | null | null | Multiple Choice | a. True, b. False | b |
10,119 | NDQ_006461 | wind waves | why does a bottle appear to bob in place when its in a lake with small waves? | null | null | Multiple Choice | a. The bottle experiences just up and down motion., b. The bottle is moving in a circle, but staying roughly in place., c. The bottle appears to stay in place, but it is actually moving slowly forward., d. None of these. | b |
10,120 | NDQ_006576 | the microscope | Who invented the microscope? | null | null | Multiple Choice | a. Robert Hooke, b. Anton van Leeuwenhoek, c. Zacharias and Hans Jansen, d. none of the above | c |
10,121 | NDQ_006577 | the microscope | __________The microscope was invented in the late 1800s. | null | null | Multiple Choice | a. true, b. false | b |
10,122 | NDQ_006578 | the microscope | __________The earliest microscopes were light microscopes. | null | null | Multiple Choice | a. true, b. false | a |
10,123 | NDQ_006579 | the microscope | What is Micrographia? | null | null | Multiple Choice | a. a book published by van Leeuwenhoek, b. the first book of microscopic studies, c. a method of drawing microscopic images, d. two of the above | b |
10,124 | NDQ_006580 | the microscope | To be seen with a light microscope, an object must be wider than 550 | null | null | Multiple Choice | a. micrometers., b. nanometers., c. millimeters., d. centimeters. | b |
10,125 | NDQ_006581 | the microscope | __________An individual bacterial cell is invisible without a microscope. | null | null | Multiple Choice | a. true, b. false | a |
10,126 | NDQ_006582 | the microscope | __________Many life science discoveries would not have been possible without the microscope. | null | null | Multiple Choice | a. true, b. false | a |
10,127 | NDQ_006583 | the microscope | Electron microscopes can make clear images that are as much as two | null | null | Multiple Choice | a. hundred times bigger than the actual object., b. thousand times bigger than the actual object., c. million times bigger than the actual object., d. billion times bigger than the actual object. | c |
10,128 | NDQ_006584 | the microscope | __________An electron microscope magnifies objects up to 2 billion times larger than their actual size. | null | null | Multiple Choice | a. true, b. false | b |
10,129 | NDQ_006585 | the microscope | The tiny building blocks of organisms are called | null | null | Multiple Choice | a. bacteria., b. microorganisms., c. animalcules., d. cells. | d |
10,130 | NDQ_006587 | the microscope | __________The first microscope was made by Anton van Leeuwenhoek. | null | null | Multiple Choice | a. true, b. false | b |
10,131 | NDQ_006589 | the microscope | __________The Jansens discovered that one lens magnified objects more than several lenses. | null | null | Multiple Choice | a. true, b. false | b |
10,132 | NDQ_006597 | the microscope | _The cell theory depended on the discovery of the microscope. | null | null | Multiple Choice | a. true, b. false | a |
10,133 | NDQ_006598 | the microscope | _Only light of certain wavelengths is visible to the human eye. | null | null | Multiple Choice | a. true, b. false | a |
10,134 | NDQ_006600 | the microscope | _The Jansens microscopes were stronger than van Leeuwenhoeks microscopes. | null | null | Multiple Choice | a. true, b. false | b |
10,135 | NDQ_006603 | the microscope | _Electron microscopes are more powerful than light microscopes. | null | null | Multiple Choice | a. true, b. false | a |
10,136 | NDQ_006604 | the microscope | _Light microscopes are no longer used today. | null | null | Multiple Choice | a. true, b. false | b |
10,137 | NDQ_006605 | the microscope | __________first scientist to observe bacteria with a microscope | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | b |
10,138 | NDQ_006606 | the microscope | __________microscopic building block of all living things | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | c |
10,139 | NDQ_006607 | the microscope | __________scientist who discovered cells | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | f |
10,140 | NDQ_006608 | the microscope | __________type of microscope that uses lenses to refract visible light | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | g |
10,141 | NDQ_006609 | the microscope | __________general term for an instrument that makes magnified images of very small objects | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | a |
10,142 | NDQ_006610 | the microscope | __________name associated with the invention of the microscope | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | d |
10,143 | NDQ_006611 | the microscope | __________type of microscope that passes electrons over or through objects | null | null | Multiple Choice | a. a.microscope, b. b.van Leeuwenhoek, c. c.cell, d. d.Jansen, e. e.electron microscope, f. f.Hooke, g. g.light microscope | e |
10,144 | NDQ_006612 | the microscope | The invention of the microscope allowed scientists to see | null | null | Multiple Choice | a. cells, b. bacteria, c. human sperm, d. all of the above | d |
10,145 | NDQ_006613 | the microscope | A microscope is an instrument that makes | null | null | Multiple Choice | a. tiny objects look bigger, b. distant objects look closer, c. distant objects look bigger, d. large objects look smaller | a |
10,146 | NDQ_006614 | the microscope | The inventors of the microscope were | null | null | Multiple Choice | a. English, b. Dutch, c. German, d. American | b |
10,147 | NDQ_006615 | the microscope | Van Leeuwenhoeks microscopes could magnify objects as much as | null | null | Multiple Choice | a. 270 times their actual size, b. 550 times their actual size, c. 1,000 times their actual size, d. none of the above | a |
10,148 | NDQ_006616 | the microscope | Light microscopes refract visible light and form images with | null | null | Multiple Choice | a. electrons, b. lenses, c. slides, d. bulbs | b |
10,149 | NDQ_006617 | the microscope | What is the magnification of the most powerful light microscope? | null | null | Multiple Choice | a. 20 times, b. 200 times, c. 2,000 times, d. 2,000,000 times | c |
10,150 | NDQ_006618 | the microscope | The wavelength of visible light is | null | null | Multiple Choice | a. 5 nanometers, b. 55 nanometers, c. 550 nanometers, d. 5,500 nanometers | c |
10,151 | NDQ_006904 | flatworms and roundworms | Which statement is true about both flatworms and roundworms? | null | null | Multiple Choice | a. They lack body symmetry, b. They may be parasites, c. They have a complete digestive system, d. all of the above | b |
10,152 | NDQ_006905 | flatworms and roundworms | How many species belong to Phylum Platyhelminthes? | null | null | Multiple Choice | a. more than 25,000, b. fewer than 15,000, c. about 10,000, d. about 8,000 | a |
10,153 | NDQ_006906 | flatworms and roundworms | Flatworms are flat because they | null | null | Multiple Choice | a. have an incomplete digestive system, b. lack a pseudocoelom or coelom, c. have just two embryonic cell layers, d. lack a mesoderm cell layer | b |
10,154 | NDQ_006907 | flatworms and roundworms | All flatworms | null | null | Multiple Choice | a. are less than a meter long, b. live in water or moist soil, c. reproduce asexually by budding, d. have a concentration of nerve tissue in the head end | d |
10,155 | NDQ_006908 | flatworms and roundworms | Which of the following organisms is a flatworm? | null | null | Multiple Choice | a. hookworm, b. ascaris, c. tapeworm, d. all of the above | c |
10,156 | NDQ_006909 | flatworms and roundworms | Flatworms reproduce by producing | null | null | Multiple Choice | a. buds, b. spores, c. gametes, d. none of the above | c |
10,157 | NDQ_006910 | flatworms and roundworms | Both flatworms and roundworms may be found living in | null | null | Multiple Choice | a. water, b. moist soil, c. vertebrate hosts, d. any of the above | d |
10,158 | NDQ_006911 | flatworms and roundworms | The body of a roundworm is covered with | null | null | Multiple Choice | a. slime, b. hooks, c. suckers, d. cuticle | d |
10,159 | NDQ_006912 | flatworms and roundworms | Which statement about roundworm reproduction is true? | null | null | Multiple Choice | a. Sperm and eggs are produced by the same adult, b. Fertilization occurs in the water outside the adults body, c. Eggs hatch into larvae, which develop into adults, d. Reproduction may occur sexually or asexually | c |
10,160 | NDQ_006913 | flatworms and roundworms | A roundworms body is stiff because of | null | null | Multiple Choice | a. the endoskeleton, b. the exoskeleton, c. fluid pressure, d. a notochord | c |
10,161 | NDQ_006915 | flatworms and roundworms | Free-living roundworms may feed on | null | null | Multiple Choice | a. bacteria, b. fungi, c. protists, d. all of the above | d |
10,162 | NDQ_006917 | flatworms and roundworms | How many eggs can a single roundworm lay in a day? | null | null | Multiple Choice | a. about 10, b. up to 100, c. around 1,000, d. as many as 100,000 | d |
10,163 | NDQ_006925 | flatworms and roundworms | Most flatworm species have separate sexes. | null | null | Multiple Choice | a. true, b. false | b |
10,164 | NDQ_006926 | flatworms and roundworms | When flatworms reproduce, eggs are fertilized outside the body. | null | null | Multiple Choice | a. true, b. false | b |
10,165 | NDQ_006928 | flatworms and roundworms | Flatworms can eat, digest food, and eliminate wastes all at the same time. | null | null | Multiple Choice | a. true, b. false | b |
10,166 | NDQ_006931 | flatworms and roundworms | Free-living roundworms may feed on bacteria, fungi, or protozoa. | null | null | Multiple Choice | a. true, b. false | a |
10,167 | NDQ_006932 | flatworms and roundworms | Roundworms play an important role in the carbon cycle. | null | null | Multiple Choice | a. true, b. false | a |
10,168 | NDQ_006933 | flatworms and roundworms | _All flatworms are several meters long. | null | null | Multiple Choice | a. true, b. false | b |
10,169 | NDQ_006934 | flatworms and roundworms | _Flatworms have a concentration of nerve tissue in the head end. | null | null | Multiple Choice | a. true, b. false | a |
10,170 | NDQ_006935 | flatworms and roundworms | _Flatworms may have several different larval stages. | null | null | Multiple Choice | a. true, b. false | a |
10,171 | NDQ_006936 | flatworms and roundworms | _A parasitic flatworm usually needs more than one type of host to complete its life cycle. | null | null | Multiple Choice | a. true, b. false | a |
10,172 | NDQ_006937 | flatworms and roundworms | _Phylum Nematoda has less than 800 known species. | null | null | Multiple Choice | a. true, b. false | b |
10,173 | NDQ_006938 | flatworms and roundworms | _The body of a roundworm has a tough covering of cuticle. | null | null | Multiple Choice | a. true, b. false | a |
10,174 | NDQ_006939 | flatworms and roundworms | _All parasitic roundworms have vertebrate hosts. | null | null | Multiple Choice | a. true, b. false | b |
10,175 | NDQ_006940 | flatworms and roundworms | ___name of the phylum to which roundworms belong | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | c |
10,176 | NDQ_006941 | flatworms and roundworms | ___common name for the type of worm that has a pseudocoelom | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | d |
10,177 | NDQ_006942 | flatworms and roundworms | ___parasitic roundworm with special structures for attaching to the hosts intestines | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | a |
10,178 | NDQ_006943 | flatworms and roundworms | ___common name for the type of worm that lacks a pseudocoelom | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | b |
10,179 | NDQ_006944 | flatworms and roundworms | ___example of a flatworm that is a human parasite | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | g |
10,180 | NDQ_006945 | flatworms and roundworms | ___name of the phylum to which flatworms belong | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | f |
10,181 | NDQ_006946 | flatworms and roundworms | ___largest and most common parasitic worm in humans | null | null | Multiple Choice | a. a.hookworm, b. b.flatworm, c. c.Nematoda, d. d.roundworm, e. e.ascaris, f. f.Platyhelminthes, g. g.tapeworm | e |
10,182 | NDQ_006947 | mollusks and annelids | All of the following are annelids except | null | null | Multiple Choice | a. slugs, b. earthworms, c. polychaete worms, d. leeches | a |
10,183 | NDQ_006948 | mollusks and annelids | ___special tissue on the outer surface of a mollusk that secretes a shell | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | g |
10,184 | NDQ_006949 | mollusks and annelids | ___type of annelid that feeds off the blood of a vertebrate host | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | f |
10,185 | NDQ_006950 | mollusks and annelids | Organ systems found in mollusks include a(n) | null | null | Multiple Choice | a. circulatory system, b. excretory system, c. incomplete digestive system, d. two of the above | d |
10,186 | NDQ_006951 | mollusks and annelids | Mollusks generally have all of the following except for | null | null | Multiple Choice | a. a head region, b. a muscular foot, c. a layer called the mantle, d. repeating body segments | d |
10,187 | NDQ_006952 | mollusks and annelids | ___mollusk feeding organ with teeth | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | e |
10,188 | NDQ_006953 | mollusks and annelids | ___name of the phylum to which snails belong | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | d |
10,189 | NDQ_006954 | mollusks and annelids | Which of the following is not an annelid structure? | null | null | Multiple Choice | a. brain, b. sensory organs, c. large coelom, d. shell | d |
10,190 | NDQ_006955 | mollusks and annelids | ___type of annelid that lives on the ocean floor | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | c |
10,191 | NDQ_006956 | mollusks and annelids | What are leeches? | null | null | Multiple Choice | a. segmented worms, b. mollusks, c. shelled invertebrates, d. two of the above | a |
10,192 | NDQ_006958 | mollusks and annelids | ___name of the phylum to which earthworms belong | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | a |
10,193 | NDQ_006960 | mollusks and annelids | ___trait found in annelids but not in roundworms | null | null | Multiple Choice | a. a.Annelida, b. b.segmentation, c. c.polychaete worm, d. d.Mollusca, e. e.radula, f. f.leech, g. g.mantle | b |
10,194 | NDQ_006968 | mollusks and annelids | Some mollusks are so small that they are nearly microscopic. | null | null | Multiple Choice | a. true, b. false | a |
10,195 | NDQ_006969 | mollusks and annelids | The head of a mollusk may have tentacles for sensing the environment. | null | null | Multiple Choice | a. true, b. false | a |
10,196 | NDQ_006971 | mollusks and annelids | All mollusks are free-living heterotrophs. | null | null | Multiple Choice | a. true, b. false | b |
10,197 | NDQ_006974 | mollusks and annelids | There are more than a million known species of annelids. | null | null | Multiple Choice | a. true, b. false | b |
10,198 | NDQ_006975 | mollusks and annelids | Annelids can reproduce only sexually. | null | null | Multiple Choice | a. true, b. false | b |
10,199 | NDQ_006976 | mollusks and annelids | _There are more than 100,000 known species of mollusks. | null | null | Multiple Choice | a. true, b. false | a |
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