Unnamed: 0
int64 0
15.2k
| questionID
stringlengths 9
10
| lessonName
stringclasses 629
values | beingAsked
stringlengths 5
342
| imageName
stringlengths 12
40
⌀ | imagePath
stringlengths 28
56
⌀ | questionType
stringclasses 2
values | answerChoices
stringlengths 17
554
| correctAnswer
stringclasses 7
values |
|---|---|---|---|---|---|---|---|---|
14,400 | NDQ_016757 | descriptive statistics | the mean and median of the same set of values are always the same. | null | null | Multiple Choice | a. true, b. false | b |
14,401 | NDQ_016758 | descriptive statistics | the average of a set of values is also called the mode. | null | null | Multiple Choice | a. true, b. false | b |
14,402 | NDQ_016760 | descriptive statistics | the mode of the set of measurements in question 8 is | null | null | Multiple Choice | a. 24.35 cm, b. 22.51 cm, c. 23.43 cm, d. 20.98 cm | d |
14,403 | NDQ_016772 | direction | terms used to describe relative direction include | null | null | Multiple Choice | a. in., b. up., c. sideways., d. all of the above | d |
14,404 | NDQ_016775 | direction | the direction of motion is a vector. | null | null | Multiple Choice | a. true, b. false | b |
14,405 | NDQ_016780 | direction | if you are facing north, then east is to your | null | null | Multiple Choice | a. left., b. right., c. back., d. none of the above | b |
14,406 | NDQ_016794 | distance | english units of distance include the | null | null | Multiple Choice | a. mile., b. square mile., c. mile per hour., d. all of the above | a |
14,407 | NDQ_016797 | distance | a millimeter is longer than a centimeter. | null | null | Multiple Choice | a. true, b. false | b |
14,408 | NDQ_016798 | distance | a yard is closest in distance to a | null | null | Multiple Choice | a. millimeter., b. centimeter., c. kilometer., d. meter. | d |
14,409 | NDQ_016800 | distance | to measure distance in si units, you could use a meter stick. | null | null | Multiple Choice | a. true, b. false | a |
14,410 | NDQ_016803 | doppler effect | the doppler effect can occur when the | null | null | Multiple Choice | a. sound source is moving and the listener is stationary., b. listener is moving and the sound source is stationary., c. sound source and listener are moving together., d. two of the above | d |
14,411 | NDQ_016804 | doppler effect | sound waves from a police car siren move away from the car in all directions. | null | null | Multiple Choice | a. true, b. false | a |
14,412 | NDQ_016805 | doppler effect | sound waves that are closer together have a lower frequency. | null | null | Multiple Choice | a. true, b. false | b |
14,413 | NDQ_016806 | doppler effect | as the frequency of sound waves gets lower, a listener perceives the sound to have a higher pitch. | null | null | Multiple Choice | a. true, b. false | b |
14,414 | NDQ_016807 | doppler effect | a police car is speeding north with its siren blaring. the sound waves from the siren increase in frequency | null | null | Multiple Choice | a. north of the car., b. south of the car., c. in all directions around the car., d. none of the above | a |
14,415 | NDQ_016808 | doppler effect | if you are standing a few blocks north of the police car in question 6, how does its siren sound to you as the car gets closer to your location? | null | null | Multiple Choice | a. The siren’s pitch gets higher., b. The siren’s pitch gets lower., c. The siren’s pitch gets lower and then higher., d. The siren’s pitch does not change. | a |
14,416 | NDQ_016810 | doppler effect | after the police car in question 6 passes your location, how does the siren sound to you? | null | null | Multiple Choice | a. The siren’s pitch gets higher., b. The siren’s pitch gets lower., c. The siren’s pitch gets lower and then higher., d. The siren’s pitch does not change. | b |
14,417 | NDQ_016813 | earth as a magnet | which shape of magnet does magnet earth resemble? | null | null | Multiple Choice | a. horseshoe magnet, b. bar magnet, c. disc magnet, d. none of the above | b |
14,418 | NDQ_016815 | earth as a magnet | the place generally referred to as earths magnetic north pole is located closest to | null | null | Multiple Choice | a. 90 degrees north latitude., b. 80 degrees north latitude., c. 70 degrees north latitude., d. 60 degrees north latitude. | b |
14,419 | NDQ_016816 | earth as a magnet | earth has two north poles and two south poles. | null | null | Multiple Choice | a. true, b. false | a |
14,420 | NDQ_016818 | earth as a magnet | which of the following statements about earths magnetic field is false? | null | null | Multiple Choice | a. It extends outward from Earth in all directions., b. It is strongest at the equator., c. Its lines of magnetic force converge at the poles., d. none of the above | b |
14,421 | NDQ_016819 | earth as a magnet | a compass needle always points to earths geographic north pole. | null | null | Multiple Choice | a. true, b. false | b |
14,422 | NDQ_016820 | earth as a magnet | the like poles of two magnets always attract each other. | null | null | Multiple Choice | a. true, b. false | b |
14,423 | NDQ_016821 | earth as a magnet | earths magnetic field is a huge region. | null | null | Multiple Choice | a. true, b. false | a |
14,424 | NDQ_016823 | efficiency | all machines make work easier. | null | null | Multiple Choice | a. true, b. false | a |
14,425 | NDQ_016824 | efficiency | you can get more work out of a machine than you put into it. | null | null | Multiple Choice | a. true, b. false | b |
14,426 | NDQ_016827 | efficiency | the percent of the work put into a machine (input work) that is actually used to do work (output work) is a measure of the machines | null | null | Multiple Choice | a. power., b. efficiency., c. mechanical advantage., d. none of the above | b |
14,427 | NDQ_016829 | efficiency | which equation is used to calculate the efficiency of a machine? | null | null | Multiple Choice | a. Efficiency = Input Distance/Output Distance x 100%, b. Efficiency = Input Force/Output Force x 100%, c. Efficiency = Input Work/Output Work x 100%, d. none of the above | d |
14,428 | NDQ_016833 | einsteins concept of gravity | newtons law of gravity was accepted for more than 200 years. | null | null | Multiple Choice | a. true, b. false | a |
14,429 | NDQ_016835 | einsteins concept of gravity | newtons law of gravity explains why gravity occurs. | null | null | Multiple Choice | a. true, b. false | b |
14,430 | NDQ_016836 | einsteins concept of gravity | einsteins concept of gravity involves | null | null | Multiple Choice | a. mass., b. space., c. time., d. all of the above | d |
14,431 | NDQ_016837 | einsteins concept of gravity | einstein explained gravity with his theory of universal gravitation. | null | null | Multiple Choice | a. true, b. false | b |
14,432 | NDQ_016838 | einsteins concept of gravity | einstein developed his theory about gravity by using | null | null | Multiple Choice | a. evidence., b. observations., c. mathematics., d. scientific laws. | c |
14,433 | NDQ_016840 | einsteins concept of gravity | einsteins concept of gravity is similar to what happens when you place a bowling ball on the surface of a trampoline. in this analogy, if the bowling ball represents earth, then the surface of the trampoline represents | null | null | Multiple Choice | a. space-time., b. Earth’s gravity., c. Earth’s mass., d. none of the above | a |
14,434 | NDQ_016844 | elastic force | the less an elastic material is stretched or compressed, the greater the force it exerts. | null | null | Multiple Choice | a. true, b. false | b |
14,435 | NDQ_016845 | elastic force | elastic force causes an elastic material to spring back to its original shape after being stretched or compressed. | null | null | Multiple Choice | a. true, b. false | a |
14,436 | NDQ_016849 | elastic force | play objects with elasticity include | null | null | Multiple Choice | a. spring toys., b. silly putty., c. modeling clay., d. all of the above | a |
14,437 | NDQ_016851 | elastic force | an elastic material offers no resistance to forces that change its shape. | null | null | Multiple Choice | a. true, b. false | b |
14,438 | NDQ_016992 | electromagnetic spectrum | most of the electromagnetic radiation on earth comes from the sun. | null | null | Multiple Choice | a. true, b. false | a |
14,439 | NDQ_016993 | electromagnetic spectrum | electromagnetic waves with longer wavelengths have | null | null | Multiple Choice | a. higher frequencies., b. more energy., c. faster speeds., d. none of the above | d |
14,440 | NDQ_016995 | electromagnetic spectrum | electromagnetic waves with the longest wavelengths are | null | null | Multiple Choice | a. gamma rays., b. X rays., c. infrared light., d. radio waves. | d |
14,441 | NDQ_016996 | electromagnetic spectrum | electromagnetic waves with the greatest amount of energy are | null | null | Multiple Choice | a. microwaves., b. ultraviolet light., c. infrared light., d. gamma rays. | d |
14,442 | NDQ_016997 | electromagnetic spectrum | the frequencies of electromagnetic waves range from | null | null | Multiple Choice | a. 104 to 1020 waves/second., b. 108 to 1016 waves/second., c. 1010 to 1014 waves/second., d. none of the above | a |
14,443 | NDQ_016998 | electromagnetic spectrum | the only electromagnetic waves in sunlight are ultraviolet, infrared, and visible light. | null | null | Multiple Choice | a. true, b. false | b |
14,444 | NDQ_017000 | electromagnetic spectrum | ultraviolet light has more energy than visible light. | null | null | Multiple Choice | a. true, b. false | a |
14,445 | NDQ_017002 | electromagnetic waves | electromagnetic waves need a medium in order to transfer energy. | null | null | Multiple Choice | a. true, b. false | b |
14,446 | NDQ_017004 | electromagnetic waves | electromagnetic waves | null | null | Multiple Choice | a. create force fields., b. exert force over a distance., c. can travel through outer space., d. all of the above | d |
14,447 | NDQ_017006 | electromagnetic waves | electromagnetic waves are | null | null | Multiple Choice | a. surface waves., b. transverse waves., c. longitudinal waves., d. none of the above | b |
14,448 | NDQ_017008 | electromagnetic waves | when electromagnetic waves strike matter they may be | null | null | Multiple Choice | a. absorbed., b. reflected., c. refracted., d. any of the above | d |
14,449 | NDQ_017009 | electromagnetic waves | electromagnetic waves may be converted to other forms of energy. | null | null | Multiple Choice | a. true, b. false | a |
14,450 | NDQ_017023 | electron cloud atomic model | orbitals may be shaped like | null | null | Multiple Choice | a. spheres., b. dumbbells., c. rings., d. all of the above | d |
14,451 | NDQ_017024 | electron cloud atomic model | the atomic nucleus is always at the center of an orbital. | null | null | Multiple Choice | a. true, b. false | a |
14,452 | NDQ_017026 | electron cloud atomic model | schroedinger thought that electrons | null | null | Multiple Choice | a. are restricted to very specific orbits., b. might travel in waves like light., c. have very precise locations., d. behave like protons and neutrons. | b |
14,453 | NDQ_017027 | electron cloud atomic model | bohrs atomic model explains all of the behaviors of electrons in atoms of all elements. | null | null | Multiple Choice | a. true, b. false | b |
14,454 | NDQ_017030 | electron cloud atomic model | the electron cloud model of the atom is no longer accepted by most scientists. | null | null | Multiple Choice | a. true, b. false | b |
14,455 | NDQ_017062 | electrons | like protons and neutrons, electrons consist of smaller particles. | null | null | Multiple Choice | a. true, b. false | b |
14,456 | NDQ_017063 | electrons | an electron has an electrical charge of | null | null | Multiple Choice | a. +1., b. -1., c. 0., d. 0 or -1. | b |
14,457 | NDQ_017064 | electrons | an electron has about the same mass as a proton. | null | null | Multiple Choice | a. true, b. false | b |
14,458 | NDQ_017065 | electrons | atoms always have the same number of electrons as protons. | null | null | Multiple Choice | a. true, b. false | a |
14,459 | NDQ_017070 | electrons | what is the maximum number of electrons each orbital can hold? | null | null | Multiple Choice | a. 1, b. 2, c. 4, d. 8 | b |
14,460 | NDQ_017074 | elements | no two elements are exactly alike. | null | null | Multiple Choice | a. true, b. false | a |
14,461 | NDQ_017075 | elements | which of the following substances is not an element? | null | null | Multiple Choice | a. oxygen, b. water, c. nitrogen, d. hydrogen | b |
14,462 | NDQ_017076 | elements | which element is attracted by a magnet? | null | null | Multiple Choice | a. silver, b. aluminum, c. lead, d. iron | d |
14,463 | NDQ_017077 | elements | which element glows red when electricity flows through it? | null | null | Multiple Choice | a. iron, b. mercury, c. neon, d. copper | c |
14,464 | NDQ_017078 | elements | carbon is the most common element in living things. | null | null | Multiple Choice | a. true, b. false | a |
14,465 | NDQ_017079 | elements | aristotle correctly identified four of the elements. | null | null | Multiple Choice | a. true, b. false | b |
14,466 | NDQ_017080 | elements | the smallest particle of an element is a(n) | null | null | Multiple Choice | a. molecule., b. crystal., c. compound., d. atom. | d |
14,467 | NDQ_017081 | endothermic reactions | only endothermic chemical reactions involve energy. | null | null | Multiple Choice | a. true, b. false | b |
14,468 | NDQ_017083 | endothermic reactions | in an endothermic reaction, it takes less energy to break bonds in the reactants than is released when new bonds form in the products. | null | null | Multiple Choice | a. true, b. false | b |
14,469 | NDQ_017085 | endothermic reactions | a constant input of energy is needed to keep an endothermic reaction going. | null | null | Multiple Choice | a. true, b. false | a |
14,470 | NDQ_017087 | endothermic reactions | which statement about the chemical reactions of photosynthesis is true? | null | null | Multiple Choice | a. They are endothermic., b. They produce energy in the form of light., c. They can be represented by 6CO2 + 6H2O → C6H12O6 + 6O2., d. two of the above | d |
14,471 | NDQ_017088 | endothermic reactions | during an endothermic reaction, energy is | null | null | Multiple Choice | a. absorbed., b. released., c. destroyed., d. created. | a |
14,472 | NDQ_017094 | energy | when work is done, energy is transferred from one object to another. | null | null | Multiple Choice | a. true, b. false | a |
14,473 | NDQ_017095 | energy | the si unit for energy is the newton. | null | null | Multiple Choice | a. true, b. false | b |
14,474 | NDQ_017096 | energy | forms of energy include | null | null | Multiple Choice | a. chemical energy., b. mechanical energy., c. thermal energy., d. all of the above | d |
14,475 | NDQ_017097 | energy | anything that is moving has kinetic energy. | null | null | Multiple Choice | a. true, b. false | a |
14,476 | NDQ_017099 | energy | when you run around a track, which type of energy are you demonstrating? | null | null | Multiple Choice | a. mechanical energy, b. potential energy, c. kinetic energy, d. two of the above | d |
14,477 | NDQ_017101 | energy conversion | energy conversion means saving energy. | null | null | Multiple Choice | a. true, b. false | b |
14,478 | NDQ_017105 | energy conversion | most electricity comes from the burning of | null | null | Multiple Choice | a. fossil fuels., b. trash., c. wood., d. none of the above | a |
14,479 | NDQ_017106 | energy conversion | any form of energy can change into any other form of energy. | null | null | Multiple Choice | a. true, b. false | a |
14,480 | NDQ_017107 | energy conversion | one form of energy can change into two or more other forms of energy. | null | null | Multiple Choice | a. true, b. false | a |
14,481 | NDQ_017109 | energy conversion | examples of the energy conversion described in question 8 include | null | null | Multiple Choice | a. using a playground slide., b. going up and down stairs., c. bouncing on a trampoline., d. all of the above | d |
14,482 | NDQ_017112 | energy level | electrons can occupy the spaces between energy levels. | null | null | Multiple Choice | a. true, b. false | b |
14,483 | NDQ_017113 | energy level | electrons in the first energy level have the least amount of energy. | null | null | Multiple Choice | a. true, b. false | a |
14,484 | NDQ_017115 | energy level | if an atom has just three electrons, they will be located in energy level(s) | null | null | Multiple Choice | a. I and II., b. I, II, and III., c. I only., d. I or II. | a |
14,485 | NDQ_017117 | energy level | how many electrons can each orbital hold? | null | null | Multiple Choice | a. 1, b. 2, c. 3, d. 4 | b |
14,486 | NDQ_017119 | energy level | any atom is most stable when its outermost energy level contains | null | null | Multiple Choice | a. a maximum of two electrons., b. a total of eight electrons., c. as many electrons as it can hold., d. fewer electrons than it can hold. | c |
14,487 | NDQ_017120 | energy level | valence electrons determine how reactive an element is. | null | null | Multiple Choice | a. true, b. false | a |
14,488 | NDQ_017123 | enzymes as catalysts | enzymes work by providing activation energy. | null | null | Multiple Choice | a. true, b. false | b |
14,489 | NDQ_017124 | enzymes as catalysts | enzymes are used up in the reactions they catalyze. | null | null | Multiple Choice | a. true, b. false | b |
14,490 | NDQ_017126 | enzymes as catalysts | a human enzyme that helps digest starch is | null | null | Multiple Choice | a. pepsase., b. starchase., c. amylase., d. glucase. | c |
14,491 | NDQ_017127 | enzymes as catalysts | which of the following statements about enzymes if false? | null | null | Multiple Choice | a. Enzymes are highly specialized for the reactions they catalyze., b. Enzymes are very effective at speeding up reactions., c. Enzymes are very efficient at catalyzing reactions., d. Enzymes usually result in the formation of waste products. | d |
14,492 | NDQ_017129 | enzymes as catalysts | about 100 different enzymes are needed for human life. | null | null | Multiple Choice | a. true, b. false | b |
14,493 | NDQ_017130 | enzymes as catalysts | enzymes are | null | null | Multiple Choice | a. proteins., b. encoded in DNA., c. made in the cells where they are needed., d. all of the above | d |
14,494 | NDQ_017153 | exothermic reactions | in an exothermic reaction, the reactants have more stored chemical energy than the products. | null | null | Multiple Choice | a. true, b. false | a |
14,495 | NDQ_017154 | exothermic reactions | in an exothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. | null | null | Multiple Choice | a. true, b. false | b |
14,496 | NDQ_017156 | exothermic reactions | all combustion reactions are exothermic reactions. | null | null | Multiple Choice | a. true, b. false | a |
14,497 | NDQ_017158 | exothermic reactions | which of the following reactions is exothermic? | null | null | Multiple Choice | a. CH4 + F2 → CH3F + HF, b. CH4 + 2O2 → CO2 + 2H2O, c. 2H2O → 2H2 + O2, d. two of the above | d |
14,498 | NDQ_017163 | external combustion engines | a steam engine is an external combustion engine. | null | null | Multiple Choice | a. true, b. false | a |
14,499 | NDQ_017165 | external combustion engines | an external combustion engine | null | null | Multiple Choice | a. burns fuel outside the engine., b. changes kinetic energy to thermal energy., c. runs on electricity., d. all of the above | a |
Subsets and Splits