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14,800 | NDQ_017856 | newtons third law | action and reaction forces always act on the same object. | null | null | Multiple Choice | a. true, b. false | b |
14,801 | NDQ_017859 | newtons third law | the lift off of a rocket is a(n) | null | null | Multiple Choice | a. combined force., b. action force., c. reaction force., d. two of the above | c |
14,802 | NDQ_017861 | noble gases | noble gases are the elements in group 17 of the periodic table. | null | null | Multiple Choice | a. true, b. false | b |
14,803 | NDQ_017862 | noble gases | noble gases are nonreactive elements. | null | null | Multiple Choice | a. true, b. false | a |
14,804 | NDQ_017863 | noble gases | noble gases include | null | null | Multiple Choice | a. oxygen., b. nitrogen., c. argon., d. all of the above | c |
14,805 | NDQ_017864 | noble gases | all noble gases are | null | null | Multiple Choice | a. odorless., b. colorless., c. radioactive., d. two of the above | d |
14,806 | NDQ_017865 | noble gases | noble gases have high boiling points. | null | null | Multiple Choice | a. true, b. false | b |
14,807 | NDQ_017870 | nonmetals | examples of nonmetals include | null | null | Multiple Choice | a. carbon., b. phosphorus., c. sulfur., d. all of the above | d |
14,808 | NDQ_017872 | nonmetals | there are fewer nonmetals than there are elements in any other class. | null | null | Multiple Choice | a. true, b. false | b |
14,809 | NDQ_017873 | nonmetals | properties of nonmetals include | null | null | Multiple Choice | a. high boiling point., b. ability to conduct heat., c. dull appearance., d. none of the above | c |
14,810 | NDQ_017874 | nonmetals | all nonmetals are very reactive. | null | null | Multiple Choice | a. true, b. false | b |
14,811 | NDQ_017877 | nonmetals | nonmetals are located on the right side of the periodic table. | null | null | Multiple Choice | a. true, b. false | a |
14,812 | NDQ_017879 | nonmetals | most of the elements that make up the human body are nonmetals. | null | null | Multiple Choice | a. true, b. false | a |
14,813 | NDQ_017881 | nuclear fission | the fuel used in nuclear power plants is | null | null | Multiple Choice | a. krypton-92., b. barium-141., c. uranium-235., d. none of the above | c |
14,814 | NDQ_017883 | nuclear fission | what is missing from the following nuclear equation for the fissioning of uranium-235? kr + ba + ? + energy 235 141 | null | null | Multiple Choice | a. 1 electron, b. 2 protons, c. 3 neutrons, d. 4 positrons | c |
14,815 | NDQ_017887 | nuclear fission | in a nuclear power plant, the energy from nuclear reactions is used to boil water. | null | null | Multiple Choice | a. true, b. false | a |
14,816 | NDQ_017888 | nuclear fission | nuclear power plants do not produce air pollution. | null | null | Multiple Choice | a. true, b. false | a |
14,817 | NDQ_017889 | nuclear fission | nuclear energy is a renewable energy resource. | null | null | Multiple Choice | a. true, b. false | b |
14,818 | NDQ_017891 | nuclear fusion | nuclear fusion occurs inside | null | null | Multiple Choice | a. stars., b. planets., c. nuclear power plants., d. two of the above | a |
14,819 | NDQ_017892 | nuclear fusion | fusion of two hydrogen nuclei produces | null | null | Multiple Choice | a. a helium nucleus., b. a neutron., c. energy., d. all of the above | d |
14,820 | NDQ_017894 | nuclear fusion | nuclear fusion produces dangerous radioactive wastes. | null | null | Multiple Choice | a. true, b. false | b |
14,821 | NDQ_017896 | nuclear fusion | the fuel needed for nuclear fusion is plentiful. | null | null | Multiple Choice | a. true, b. false | a |
14,822 | NDQ_017899 | nuclear fusion | scientists are a long way from developing the technology needed to use nuclear fusion to produce electricity. | null | null | Multiple Choice | a. true, b. false | a |
14,823 | NDQ_017903 | nucleic acid classification | nitrogen bases in dna include | null | null | Multiple Choice | a. adenine., b. uracil., c. ribose., d. two of the above | a |
14,824 | NDQ_017904 | nucleic acid classification | the backbone of a nucleic acid consists of alternating nitrogen bases. | null | null | Multiple Choice | a. true, b. false | b |
14,825 | NDQ_017907 | nucleic acid classification | functions of rna include | null | null | Multiple Choice | a. copying the genetic code in DNA., b. carrying the genetic code to the cytoplasm., c. helping to make proteins based on the genetic code., d. all of the above | d |
14,826 | NDQ_017908 | nucleic acid classification | dna is found only in the nucleus of cells. | null | null | Multiple Choice | a. true, b. false | a |
14,827 | NDQ_017941 | optical instruments | optical instruments include | null | null | Multiple Choice | a. microscopes., b. telescopes., c. cameras., d. all of the above | d |
14,828 | NDQ_017942 | optical instruments | optical instruments use lenses and mirrors to form images. | null | null | Multiple Choice | a. true, b. false | a |
14,829 | NDQ_017943 | optical instruments | a compound microscope has | null | null | Multiple Choice | a. two concave lenses., b. two convex lenses., c. one concave lens and one convex lens., d. none of the above | b |
14,830 | NDQ_017944 | optical instruments | the magnifications of all the lenses of a microscope are added together to yield the overall magnification. | null | null | Multiple Choice | a. true, b. false | b |
14,831 | NDQ_017946 | optical instruments | the part of a camera that focuses light to form an image is the | null | null | Multiple Choice | a. aperture., b. shutter., c. lens., d. film or sensor. | c |
14,832 | NDQ_017952 | orbital motion | the shape of the path in question 2 is | null | null | Multiple Choice | a. round., b. circular., c. elliptical., d. none of the above | c |
14,833 | NDQ_017953 | orbital motion | objects that have orbital motion include | null | null | Multiple Choice | a. moons., b. satellites., c. asteroids., d. all of the above | d |
14,834 | NDQ_017957 | orbital motion | it takes earth 24 hours to complete each orbit. | null | null | Multiple Choice | a. true, b. false | b |
14,835 | NDQ_017958 | orbital motion | comets do not have orbital motion. | null | null | Multiple Choice | a. true, b. false | b |
14,836 | NDQ_017959 | orbital motion | an object with orbital motion is constantly accelerating. | null | null | Multiple Choice | a. true, b. false | a |
14,837 | NDQ_017971 | ph concept | which of the following properties characterizes bases? | null | null | Multiple Choice | a. ability to react with metals, b. sour taste, c. bitter taste, d. two of the above | c |
14,838 | NDQ_017972 | ph concept | examples of acids include | null | null | Multiple Choice | a. antacid tablets., b. vinegar., c. drain cleaner., d. all of the above | b |
14,839 | NDQ_017973 | ph concept | the strength of an acid depends on how many hydrogen ions it produces when it dissolves in water. | null | null | Multiple Choice | a. true, b. false | a |
14,840 | NDQ_017975 | ph concept | an example of a weak base is sodium hydroxide. | null | null | Multiple Choice | a. true, b. false | a |
14,841 | NDQ_017978 | ph concept | acidity is the hydrogen ion concentration of a solution. | null | null | Multiple Choice | a. true, b. false | a |
14,842 | NDQ_017982 | photosynthesis reactions | the reactants of photosynthesis include | null | null | Multiple Choice | a. oxygen., b. chlorophyll., c. carbon dioxide., d. two of the above | a |
14,843 | NDQ_017983 | photosynthesis reactions | the products of photosynthesis include | null | null | Multiple Choice | a. energy., b. carbon dioxide., c. water., d. oxygen. | d |
14,844 | NDQ_017986 | photosynthesis reactions | photosynthesis changes light energy to chemical energy. | null | null | Multiple Choice | a. true, b. false | a |
14,845 | NDQ_017987 | photosynthesis reactions | photosynthesis takes place in a single chemical reaction. | null | null | Multiple Choice | a. true, b. false | b |
14,846 | NDQ_017988 | photosynthesis reactions | organisms that undergo photosynthesis include | null | null | Multiple Choice | a. plants., b. cyanobacteria., c. algae., d. all of the above | d |
14,847 | NDQ_018032 | position time graphs | a position-time graph shows how far an object has traveled at any given time since it started moving. | null | null | Multiple Choice | a. true, b. false | a |
14,848 | NDQ_018033 | position time graphs | a position-time graph shows the direction(s) the moving object has traveled relative to the starting position. | null | null | Multiple Choice | a. true, b. false | a |
14,849 | NDQ_018034 | position time graphs | the slope of a position-time graph can be used to find the moving objects | null | null | Multiple Choice | a. velocity., b. position., c. acceleration., d. none of the above | a |
14,850 | NDQ_018036 | position time graphs | the steeper the line on a position-time graph, the faster the objects motion is changing. | null | null | Multiple Choice | a. true, b. false | a |
14,851 | NDQ_018037 | position time graphs | what is the formula for calculating the average velocity of a moving object? | null | null | Multiple Choice | a. average velocity = Δd/Δt, b. average velocity = Δt/Δd, c. average velocity = Δd x Δt, d. average velocity = Δd + Δt | a |
14,852 | NDQ_018041 | potential energy | a person or object may have stored energy because of its | null | null | Multiple Choice | a. shape., b. position., c. velocity., d. two of the above | d |
14,853 | NDQ_018044 | potential energy | an objects potential energy due to gravity depends on its | null | null | Multiple Choice | a. weight., b. acceleration., c. height above the ground., d. two of the above | d |
14,854 | NDQ_018047 | potential energy | a stretched rubber band has potential energy. | null | null | Multiple Choice | a. true, b. false | a |
14,855 | NDQ_018048 | potential energy | food and batteries both contain potential energy. | null | null | Multiple Choice | a. true, b. false | a |
14,856 | NDQ_018054 | power | compared with a less powerful device, a more powerful device can do | null | null | Multiple Choice | a. more work in the same time., b. the same work in less time., c. less work in the same time., d. two of the above | d |
14,857 | NDQ_018056 | power | if a microwave does 3000 j of work in 3 seconds, its power is | null | null | Multiple Choice | a. 9000 W., b. 3300 W., c. 2700 W., d. 1000 W. | d |
14,858 | NDQ_018057 | power | if you know power and time, you can calculate work with the equation | null | null | Multiple Choice | a. Work = Power x Time., b. Work = Power/Time., c. Work = Time/Power., d. none of the above | a |
14,859 | NDQ_018072 | projectile motion | to hit the bulls eye of a target, you have to aim an arrow | null | null | Multiple Choice | a. at the center of the bull’s eye., b. above the bull’s eye., c. below the bull’s eye., d. to one side of the bull’s eye. | b |
14,860 | NDQ_018074 | projectile motion | examples of objects that have projectile motion include | null | null | Multiple Choice | a. moons of planets., b. artificial satellites., c. paintballs., d. all of the above | c |
14,861 | NDQ_018075 | projectile motion | when an arrow is shot from a bow, forces acting on the arrow include the | null | null | Multiple Choice | a. elastic force of the bow., b. force of gravity., c. force of friction., d. all of the above | d |
14,862 | NDQ_018077 | projectile motion | a cannonball shot from a cannon has projectile motion. | null | null | Multiple Choice | a. true, b. false | a |
14,863 | NDQ_018078 | projectile motion | an object with projectile motion constantly changes direction. | null | null | Multiple Choice | a. true, b. false | a |
14,864 | NDQ_018081 | properties of acids | an example of an acid is hcl. | null | null | Multiple Choice | a. true, b. false | a |
14,865 | NDQ_018082 | properties of acids | all acids taste sour. | null | null | Multiple Choice | a. true, b. false | a |
14,866 | NDQ_018084 | properties of acids | when acids react with metals, they produce | null | null | Multiple Choice | a. hydrogen gas., b. a salt., c. a base., d. two of the above | d |
14,867 | NDQ_018087 | properties of acids | which statement about ph is true? | null | null | Multiple Choice | a. A neutral solution has a pH of 0., b. An acid has a pH greater than 7., c. An acid has a pH less than 7., d. A very weak acid has a pH close to 0. | c |
14,868 | NDQ_018089 | properties of acids | litmus paper is the only indicator of acids. | null | null | Multiple Choice | a. true, b. false | b |
14,869 | NDQ_018092 | properties of bases | an example of a base is sodium hydroxide (naoh). | null | null | Multiple Choice | a. true, b. false | a |
14,870 | NDQ_018093 | properties of bases | bases feel slippery to the touch. | null | null | Multiple Choice | a. true, b. false | a |
14,871 | NDQ_018095 | properties of bases | bases can react with metals. | null | null | Multiple Choice | a. true, b. false | b |
14,872 | NDQ_018096 | properties of bases | bases turn red litmus paper blue. | null | null | Multiple Choice | a. true, b. false | a |
14,873 | NDQ_018098 | properties of bases | bases are used to make | null | null | Multiple Choice | a. soaps., b. cleaning products., c. concrete., d. all of the above | d |
14,874 | NDQ_018099 | properties of bases | the strongest bases have ph values close to | null | null | Multiple Choice | a. 0, b. 5, c. 7, d. 14 | d |
14,875 | NDQ_018101 | properties of electromagnetic waves | properties of electromagnetic waves include | null | null | Multiple Choice | a. speed., b. frequency., c. wavelength., d. all of the above | d |
14,876 | NDQ_018102 | properties of electromagnetic waves | all electromagnetic waves travel at the same speed through space. | null | null | Multiple Choice | a. true, b. false | a |
14,877 | NDQ_018105 | properties of electromagnetic waves | higher-frequency electromagnetic waves have less energy. | null | null | Multiple Choice | a. true, b. false | b |
14,878 | NDQ_018106 | properties of electromagnetic waves | some electromagnetic waves have wavelengths shorter than the diameter of an atom. | null | null | Multiple Choice | a. true, b. false | a |
14,879 | NDQ_018107 | properties of electromagnetic waves | all electromagnetic waves have frequencies of less than 1000 waves per second. | null | null | Multiple Choice | a. true, b. false | b |
14,880 | NDQ_018108 | properties of electromagnetic waves | the highest-frequency electromagnetic waves | null | null | Multiple Choice | a. include visible light., b. are harmful., c. have the longest wavelengths., d. two of the above | b |
14,881 | NDQ_018109 | properties of electromagnetic waves | which equation shows the relationship of wave speed to wavelength and wave frequency? | null | null | Multiple Choice | a. Speed = Wavelength x Frequency, b. Speed = Wavelength/Frequency, c. Speed = Frequency/Wavelength, d. none of the above | a |
14,882 | NDQ_018121 | protein classification | proteins are the most numerous and diverse biochemical compounds. | null | null | Multiple Choice | a. true, b. false | a |
14,883 | NDQ_018122 | protein classification | elements that make up proteins include | null | null | Multiple Choice | a. nitrogen., b. phosphorus., c. hemoglobin., d. two of the above | a |
14,884 | NDQ_018125 | protein classification | there are hundreds of different amino acids. | null | null | Multiple Choice | a. true, b. false | b |
14,885 | NDQ_018126 | protein classification | what determines the shape of a protein? | null | null | Multiple Choice | a. amino acid sequence of each chain, b. folding of each amino acid chain, c. number of amino acid chains, d. all of the above | d |
14,886 | NDQ_018128 | protein classification | examples of proteins by function include | null | null | Multiple Choice | a. hormones., b. antibodies., c. enzymes., d. all of the above | d |
14,887 | NDQ_018129 | protein classification | some proteins carry other materials in the blood. | null | null | Multiple Choice | a. true, b. false | a |
14,888 | NDQ_018131 | protons | protons are one of three main types of particles that make up atoms. | null | null | Multiple Choice | a. true, b. false | a |
14,889 | NDQ_018132 | protons | protons are found only in the atomic nucleus. | null | null | Multiple Choice | a. true, b. false | a |
14,890 | NDQ_018133 | protons | which of the following correctly describes a proton? | null | null | Multiple Choice | a. It has an electrical charge of +2., b. It has a mass of 1 mg., c. It has a diameter of 1.7 x 10-27 km., d. none of the above | d |
14,891 | NDQ_018134 | protons | in the sun, protons of hydrogen atoms | null | null | Multiple Choice | a. fission to form energy., b. fuse to form helium nuclei., c. melt to form light., d. none of the above | b |
14,892 | NDQ_018135 | protons | the atoms of different elements have | null | null | Multiple Choice | a. different numbers of protons., b. different types of protons., c. the same number of protons., d. two of the above | a |
14,893 | NDQ_018137 | protons | what are protons made of? | null | null | Multiple Choice | a. gluons, b. neutrons, c. quarks, d. two of the above | d |
14,894 | NDQ_018139 | protons | protons have less mass than electrons. | null | null | Multiple Choice | a. true, b. false | b |
14,895 | NDQ_018144 | pulley | a flagpole pulley is a | null | null | Multiple Choice | a. fixed pulley., b. moveable pulley., c. compound pulley., d. none of the above | a |
14,896 | NDQ_018145 | pulley | the ideal mechanical advantage of a pulley is equal to the number of rope segments pulling up on the load. | null | null | Multiple Choice | a. true, b. false | a |
14,897 | NDQ_018146 | pulley | a moveable pulley changes the direction of the input force. | null | null | Multiple Choice | a. true, b. false | b |
14,898 | NDQ_018147 | pulley | a zip-line pulley is a moveable pulley. | null | null | Multiple Choice | a. true, b. false | a |
14,899 | NDQ_018148 | pulley | which type(s) of pulley can have a mechanical advantage greater than 2? | null | null | Multiple Choice | a. fixed pulley, b. moveable pulley, c. compound pulley, d. two of the above | c |
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