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 |
|---|---|---|---|---|---|---|---|---|
12,700 | NDQ_013431 | buoyancy of fluids | Fluids exert pressure only in an upward direction. | null | null | Multiple Choice | a. true, b. false | b |
12,701 | NDQ_013433 | buoyancy of fluids | Buoyant force explains why some objects float in water. | null | null | Multiple Choice | a. true, b. false | a |
12,702 | NDQ_013434 | buoyancy of fluids | Objects float because fluids exert only upward pressure. | null | null | Multiple Choice | a. true, b. false | b |
12,703 | NDQ_013435 | buoyancy of fluids | amount of mass in a given volume | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | g |
12,704 | NDQ_013436 | buoyancy of fluids | Buoyancy is a property of some objects when placed in fluids. | null | null | Multiple Choice | a. true, b. false | b |
12,705 | NDQ_013437 | buoyancy of fluids | force that causes an object to sink in a fluid | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | f |
12,706 | NDQ_013438 | buoyancy of fluids | to remain at or near the surface of a fluid | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | d |
12,707 | NDQ_013439 | buoyancy of fluids | If two objects have the same volume but differ in density, the denser object will weigh more. | null | null | Multiple Choice | a. true, b. false | a |
12,708 | NDQ_013440 | buoyancy of fluids | force that causes an object to float on a fluid | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | a |
12,709 | NDQ_013441 | buoyancy of fluids | Archimedes law explains why heavy objects can float if they displace enough water. | null | null | Multiple Choice | a. true, b. false | a |
12,710 | NDQ_013442 | buoyancy of fluids | The buoyant force acting on an object in a fluid depends on the total volume of the fluid. | null | null | Multiple Choice | a. true, b. false | b |
12,711 | NDQ_013443 | buoyancy of fluids | act in which an object moves fluid out of its way | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | b |
12,712 | NDQ_013444 | buoyancy of fluids | ability of a fluid to exert upward force | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | c |
12,713 | NDQ_013445 | buoyancy of fluids | measure of the force of gravity pulling down on an object | null | null | Multiple Choice | a. buoyant force, b. displacement, c. buoyancy, d. float, e. weight, f. gravity, g. density | e |
12,714 | NDQ_013453 | buoyancy of fluids | Which statement explains buoyant force? | null | null | Multiple Choice | a. Denser fluids exert less pressure., b. Fluid pressure is greater at greater depths., c. An object weighs less in water., d. all of the above | b |
12,715 | NDQ_013454 | buoyancy of fluids | What determines whether an object floats or sinks in water? | null | null | Multiple Choice | a. the buoyant force acting on the object, b. the force of gravity acting on the object, c. the objects weight, d. all of the above | d |
12,716 | NDQ_013455 | buoyancy of fluids | Ice cubes float on water because ice is | null | null | Multiple Choice | a. less dense than water., b. colder than water., c. heavier than water., d. less stable than water. | a |
12,717 | NDQ_013456 | buoyancy of fluids | When you sit in a tub of bath water, the water rises because it | null | null | Multiple Choice | a. becomes less dense., b. is displaced., c. gets warmer., d. floats. | b |
12,718 | NDQ_013457 | buoyancy of fluids | Buoyancy is a property of | null | null | Multiple Choice | a. gases., b. liquids., c. solids., d. two of the above | d |
12,719 | NDQ_013458 | buoyancy of fluids | Where is water pressure greatest on an object in the water? | null | null | Multiple Choice | a. on top of the object, b. on the sides of the object, c. on the bottom of the object, d. two of the above | c |
12,720 | NDQ_013459 | buoyancy of fluids | You feel lighter in the water than on land because | null | null | Multiple Choice | a. gravity is not as strong in the water., b. the buoyant force of the water counters some of your weight., c. your mass is less in the water than on land., d. you are trying to stay afloat. | b |
12,721 | NDQ_013460 | work | unit for power that equals 745 watts | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | b |
12,722 | NDQ_013461 | work | Assume that a friend hands you a 15-newton box to hold for her. If you hold the box without moving it at a height of 1.5 meters above the ground, how much work do you do? | null | null | Multiple Choice | a. 22.5 J, b. 15 J, c. 10 J, d. none of the above | d |
12,723 | NDQ_013462 | work | SI unit for work | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | a |
12,724 | NDQ_013463 | work | Which weight lifter described below does the most work? | null | null | Multiple Choice | a. Tom lifts 195 N a distance of 2.0 m., b. Ted lifts 190 N a distance of 2.1 m., c. Tad lifts 185 N a distance of 2.2 m., d. Tim lifts 180 N a distance of 2.3 m. | d |
12,725 | NDQ_013464 | work | how to calculate work | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | d |
12,726 | NDQ_013465 | work | Another way of writing 1 joule is | null | null | Multiple Choice | a. 1 N m., b. 1 N/m., c. 1 N m2 ., d. 1 N/m2 . | a |
12,727 | NDQ_013466 | work | One horsepower is about equal to | null | null | Multiple Choice | a. 1 watt., b. 75 watts., c. 745 watts., d. 1 kilowatt. | c |
12,728 | NDQ_013467 | work | use of force to move an object | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | g |
12,729 | NDQ_013468 | work | how to calculate power | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | f |
12,730 | NDQ_013469 | work | How much work is done by a 1000-watt hairdryer in 40 seconds? | null | null | Multiple Choice | a. 0.4 J, b. 25 J, c. 960 J, d. 40,000 J | d |
12,731 | NDQ_013471 | work | SI unit for power | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | e |
12,732 | NDQ_013472 | work | measure of the amount of work that can be done in a given amount of time | null | null | Multiple Choice | a. joule, b. horsepower, c. power, d. force distance, e. watt, f. work time, g. work | c |
12,733 | NDQ_013480 | work | Every time you apply a force you do work | null | null | Multiple Choice | a. true, b. false | b |
12,734 | NDQ_013482 | work | A more powerful device can do more work in the same amount of time than a less powerful device. | null | null | Multiple Choice | a. true, b. false | a |
12,735 | NDQ_013485 | work | The power of a machine equals the work it does multiplied by the time it takes to do that work. | null | null | Multiple Choice | a. true, b. false | b |
12,736 | NDQ_013487 | work | The steam engine invented by James Watt had the power of one horse. | null | null | Multiple Choice | a. true, b. false | b |
12,737 | NDQ_013488 | work | The most powerful engines today can produce more than 100,000 horsepowers. | null | null | Multiple Choice | a. true, b. false | a |
12,738 | NDQ_013489 | work | Whenever you move your body you are doing work. | null | null | Multiple Choice | a. true, b. false | a |
12,739 | NDQ_013490 | work | You do work when you push a heavy object even if the object does not move. | null | null | Multiple Choice | a. true, b. false | b |
12,740 | NDQ_013491 | work | Work can be expressed in the unit N m. | null | null | Multiple Choice | a. true, b. false | a |
12,741 | NDQ_013492 | work | A more powerful device can do the same work in less time than a less powerful device. | null | null | Multiple Choice | a. true, b. false | a |
12,742 | NDQ_013493 | work | If you move an object that weighs 10 newtons a distance of 2 meters, you do 5 joules of work. | null | null | Multiple Choice | a. true, b. false | b |
12,743 | NDQ_013494 | work | If you move the object in question 5 a distance of 5 meters, you do 2 joules of work. | null | null | Multiple Choice | a. true, b. false | b |
12,744 | NDQ_013495 | work | A device that does 100 joules of work in 3 seconds has 300 watts of power. | null | null | Multiple Choice | a. true, b. false | b |
12,745 | NDQ_013496 | work | The unit called the horsepower was introduced by James Watt. | null | null | Multiple Choice | a. true, b. false | a |
12,746 | NDQ_013497 | work | A 2-horsepower device has almost 1500 watts of power. | null | null | Multiple Choice | a. true, b. false | a |
12,747 | NDQ_013498 | work | The more force you apply to move an object, the more work you do. | null | null | Multiple Choice | a. true, b. false | a |
12,748 | NDQ_013499 | work | For work to be done on an object, force must be applied | null | null | Multiple Choice | a. in an upward direction., b. against the force of gravity., c. in the same direction as gravity., d. in the same direction that the object moves. | d |
12,749 | NDQ_013500 | work | Work is directly related to the force applied to an object and to the | null | null | Multiple Choice | a. mass of the object., b. distance the object moves., c. direction of the applied force., d. amount of time the force is applied. | b |
12,750 | NDQ_013501 | work | If a mover pushes a box weighing 100 newtons a distance of 3 meters, how much work does she do? | null | null | Multiple Choice | a. 3J, b. 33 J, c. 300 J, d. 3000 J | c |
12,751 | NDQ_013502 | work | The power of a device can be expressed in | null | null | Multiple Choice | a. joules., b. joules per meter., c. joules per second., d. none of the above | c |
12,752 | NDQ_013503 | work | Work can be calculated as | null | null | Multiple Choice | a. force time., b. force power., c. power time., d. power distance. | c |
12,753 | NDQ_013504 | work | A device does 2000 joules of work in 10 seconds. What is the power of the device? | null | null | Multiple Choice | a. 20,000 W, b. 2000 W, c. 200 W, d. 20 W | c |
12,754 | NDQ_013505 | work | One horsepower is the amount of work a horse can do in one | null | null | Multiple Choice | a. second., b. minute., c. hour., d. day. | b |
12,755 | NDQ_013507 | machines | Machines that increase the distance over which force is applied include | null | null | Multiple Choice | a. hammers., b. doorknobs., c. nutcrackers., d. pry bars. | a |
12,756 | NDQ_013509 | machines | Ways that machines make work easier include | null | null | Multiple Choice | a. increasing force., b. increasing work., c. increasing efficiency., d. all of the above | a |
12,757 | NDQ_013511 | machines | If you apply 20 N of force to the handle end of a canoe paddle, how much force might the paddle end apply to the water? | null | null | Multiple Choice | a. 40 N, b. 30 N, c. 20 N, d. 10 N | d |
12,758 | NDQ_013512 | machines | If the output work of a machine is 3000 J and the input work is 4000 J, what is the efficiency of the machine? | null | null | Multiple Choice | a. 133%, b. 100%, c. 75%, d. 66% | c |
12,759 | NDQ_013514 | machines | If the ideal mechanical advantage of a machine equals 1, then the actual mechanical advantage of the machine must be | null | null | Multiple Choice | a. greater than 1., b. equal to 1., c. less than 1., d. less than zero. | c |
12,760 | NDQ_013521 | machines | The output distance of a machine is always greater than the input distance. | null | null | Multiple Choice | a. true, b. false | b |
12,761 | NDQ_013523 | machines | Using a machine increases the amount of work that is done for a given amount of force. | null | null | Multiple Choice | a. true, b. false | b |
12,762 | NDQ_013525 | machines | A machine increases the applied force by increasing the distance over which the force is applied. | null | null | Multiple Choice | a. true, b. false | b |
12,763 | NDQ_013526 | machines | The output force of a machine is always less than the input force. | null | null | Multiple Choice | a. true, b. false | b |
12,764 | NDQ_013527 | machines | The force you apply to a doorknob is less than the force applied by the doorknob to open the door. | null | null | Multiple Choice | a. true, b. false | a |
12,765 | NDQ_013528 | machines | All machines that change the strength of the force also change the distance over which the force is applied. | null | null | Multiple Choice | a. true, b. false | a |
12,766 | NDQ_013529 | machines | A machine changes the way that work is done. | null | null | Multiple Choice | a. true, b. false | a |
12,767 | NDQ_013530 | machines | The actual mechanical advantage of a machine is always greater than its ideal mechanical advantage. | null | null | Multiple Choice | a. true, b. false | b |
12,768 | NDQ_013531 | machines | All machines change the direction in which force is applied. | null | null | Multiple Choice | a. true, b. false | b |
12,769 | NDQ_013532 | machines | A machine that applies force over a longer distance also increases the strength of the force. | null | null | Multiple Choice | a. true, b. false | b |
12,770 | NDQ_013533 | machines | If a machines output distance is greater than the input distance, the ideal mechanical advantage is less than | null | null | Multiple Choice | a. true, b. false | a |
12,771 | NDQ_013534 | machines | A pry bar changes the strength, distance, and direction of the input force. | null | null | Multiple Choice | a. true, b. false | a |
12,772 | NDQ_013535 | machines | If a machine changes only the direction of force, its mechanical advantage is equal to 1. | null | null | Multiple Choice | a. true, b. false | a |
12,773 | NDQ_013536 | machines | A lever is a machine that changes the direction of the force that is applied to it. | null | null | Multiple Choice | a. true, b. false | b |
12,774 | NDQ_013537 | machines | number of times a machine multiplies the input force | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | d |
12,775 | NDQ_013538 | machines | distance over which force is applied to a machine | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | e |
12,776 | NDQ_013539 | machines | percent of input work that becomes output work | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | a |
12,777 | NDQ_013540 | machines | force applied to a machine | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | b |
12,778 | NDQ_013541 | machines | any device that makes work easier by changing a force | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | g |
12,779 | NDQ_013542 | machines | distance over which a machine applies force | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | f |
12,780 | NDQ_013543 | machines | force applied by a machine | null | null | Multiple Choice | a. efficiency, b. input force, c. output force, d. mechanical advantage, e. input distance, f. output distance, g. machine | c |
12,781 | NDQ_013544 | machines | A machine can make work easier by | null | null | Multiple Choice | a. increasing the amount of force that is applied., b. increasing the distance over which force is applied., c. changing the direction in which force is applied., d. any of the above | d |
12,782 | NDQ_013545 | machines | Examples of machines that increase force include | null | null | Multiple Choice | a. doorknobs., b. hammers., c. canoe paddles., d. two of the above | a |
12,783 | NDQ_013546 | machines | How does a nutcracker change the force applied to it? | null | null | Multiple Choice | a. It increases the force that is applied., b. It increases the distance over which force is applied., c. It changes the direction in which force is applied., d. two of the above | a |
12,784 | NDQ_013547 | machines | A machine that increases the applied force and also changes its direction is a | null | null | Multiple Choice | a. hammer., b. canoe paddle., c. pry bar., d. doorknob. | c |
12,785 | NDQ_013548 | machines | Which of the following could be the efficiency of a machine? | null | null | Multiple Choice | a. 200%, b. 150%, c. 100%, d. 75% | d |
12,786 | NDQ_013549 | machines | What is the mechanical advantage of a machine that increases the distance over which force is applied? | null | null | Multiple Choice | a. less than 1, b. equal to 1, c. greater than 1, d. greater than 2 | a |
12,787 | NDQ_013550 | machines | If the output force of a machine is greater than input force, the mechanical advantage of the machine is | null | null | Multiple Choice | a. greater than 1., b. equal to 1., c. less than 1., d. any of the above | a |
12,788 | NDQ_013551 | simple machines | Which type of simple machine is a chisel? | null | null | Multiple Choice | a. lever, b. screw, c. wedge, d. none of the above | c |
12,789 | NDQ_013552 | simple machines | Which type of simple machine is the head of an axe? | null | null | Multiple Choice | a. wedge, b. lever, c. screw, d. none of the above | a |
12,790 | NDQ_013553 | simple machines | Which of the following is an example of a screw? | null | null | Multiple Choice | a. spiral staircase, b. Ferris wheel, c. seesaw, d. axe | a |
12,791 | NDQ_013554 | simple machines | Which of the following is a second-class lever? | null | null | Multiple Choice | a. seesaw, b. chisel, c. wheelbarrow, d. hockey stick | c |
12,792 | NDQ_013555 | simple machines | The ideal mechanical advantage of a screw is always | null | null | Multiple Choice | a. less than 1., b. equal to 1., c. greater than 1., d. greater than 2. | c |
12,793 | NDQ_013556 | simple machines | The ideal mechanical advantage of a pulley equals the | null | null | Multiple Choice | a. number of rope segments lifting up on the object., b. length of the rope segments between the pulley and the object., c. height of the pulley above the surface of the ground., d. number of rope segments between the pulley and the beam. | a |
12,794 | NDQ_013557 | simple machines | Which statement about a wheel and axle is true? | null | null | Multiple Choice | a. It consists of two simple machines., b. It changes the direction of the applied force., c. It changes the distance over which the force is applied., d. two of the above | c |
12,795 | NDQ_013558 | simple machines | Which class of lever does not change the direction of the applied force? | null | null | Multiple Choice | a. class 1, b. class 2, c. class 3, d. two of the above | d |
12,796 | NDQ_013559 | simple machines | Which of the following is an example of a third class lever? | null | null | Multiple Choice | a. seesaw, b. wheelbarrow, c. hockey stick, d. pry bar | c |
12,797 | NDQ_013560 | simple machines | The ideal mechanical advantage of an inclined plane is always | null | null | Multiple Choice | a. less than one., b. equal to one., c. greater than one., d. less than zero. | c |
12,798 | NDQ_013562 | simple machines | A wheel and axle increase the applied force when | null | null | Multiple Choice | a. the input distance is equal to the output distance., b. the input distance is less than the output distance., c. the input force is applied to the wheel., d. the output force is applied by the wheel. | c |
12,799 | NDQ_013563 | simple machines | How many rope segments pull up on the object in a single moveable pulley? | null | null | Multiple Choice | a. 1, b. 2, c. 3, d. 4 | b |
Subsets and Splits
No saved queries yet
Save your SQL queries to embed, download, and access them later. Queries will appear here once saved.