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12,800 | NDQ_013565 | simple machines | There are seven different types of simple machines. | null | null | Multiple Choice | a. true, b. false | b |
12,801 | NDQ_013568 | simple machines | The input distance of an inclined plane is always greater than the output distance. | null | null | Multiple Choice | a. true, b. false | a |
12,802 | NDQ_013570 | simple machines | The input force is always applied to the thinner side of a wedge. | null | null | Multiple Choice | a. true, b. false | b |
12,803 | NDQ_013571 | simple machines | The center of a wheel and axle is called the fulcrum. | null | null | Multiple Choice | a. true, b. false | b |
12,804 | NDQ_013572 | simple machines | The closer together the threads of a screw are, the harder it is to turn the screw. | null | null | Multiple Choice | a. true, b. false | b |
12,805 | NDQ_013573 | simple machines | A wedge is used to cut or split objects. | null | null | Multiple Choice | a. true, b. false | a |
12,806 | NDQ_013574 | simple machines | When you use a hammer to pry a nail out of board, the hammer is a first class lever. | null | null | Multiple Choice | a. true, b. false | a |
12,807 | NDQ_013575 | simple machines | A lever always increases the force applied to the lever. | null | null | Multiple Choice | a. true, b. false | b |
12,808 | NDQ_013576 | simple machines | When you turn a screw, you apply force along its inclined plane. | null | null | Multiple Choice | a. true, b. false | a |
12,809 | NDQ_013577 | simple machines | The wheel of a Ferris wheel turns more quickly than the axle. | null | null | Multiple Choice | a. true, b. false | a |
12,810 | NDQ_013578 | simple machines | A lever may or may not change the strength of the applied force. | null | null | Multiple Choice | a. true, b. false | a |
12,811 | NDQ_013579 | simple machines | The wheel of a wheel and axle turns more slowly than the axle. | null | null | Multiple Choice | a. true, b. false | b |
12,812 | NDQ_013580 | simple machines | A single fixed pulley has an ideal mechanical advantage of 1. | null | null | Multiple Choice | a. true, b. false | a |
12,813 | NDQ_013581 | simple machines | A compound pulley always contains at least two fixed pulleys. | null | null | Multiple Choice | a. true, b. false | b |
12,814 | NDQ_013582 | simple machines | A zip-line pulley is an example of a single moveable pulley. | null | null | Multiple Choice | a. true, b. false | a |
12,815 | NDQ_013583 | simple machines | simple machine that consists of a rope and grooved wheel | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | c |
12,816 | NDQ_013584 | simple machines | type of lever in which the fulcrum is between the input and output forces | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | e |
12,817 | NDQ_013585 | simple machines | simple machine consisting of two connected rings or cylinders that both turn around a single center point | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | f |
12,818 | NDQ_013586 | simple machines | simple machine that consists of an inclined plane wrapped around a cylinder or cone | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | d |
12,819 | NDQ_013587 | simple machines | fixed point of a lever around which the bar rotates | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | g |
12,820 | NDQ_013588 | simple machines | simple machine consisting of a sloping surface that connects lower and higher elevations | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | a |
12,821 | NDQ_013589 | simple machines | type of lever in which input and output forces are on the same side of the fulcrum | null | null | Multiple Choice | a. inclined plane, b. class 2 lever, c. pulley, d. screw, e. class 1 lever, f. wheel and axle, g. fulcrum | b |
12,822 | NDQ_013597 | compound machines | how greatly a machine increases the applied force | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | b |
12,823 | NDQ_013598 | compound machines | Simple machines in a pair of scissors include | null | null | Multiple Choice | a. two levers., b. two wedges., c. one wheel and axle., d. two of the above | d |
12,824 | NDQ_013599 | compound machines | how well a machine deals with friction | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | f |
12,825 | NDQ_013600 | compound machines | Compound machines include all of the following except a(n) | null | null | Multiple Choice | a. chisel., b. bicycle., c. automobile., d. wheelbarrow. | a |
12,826 | NDQ_013601 | compound machines | An axe is a compound machine that consists of a wedge and a(n) | null | null | Multiple Choice | a. screw., b. inclined plane., c. first class lever., d. third class lever. | d |
12,827 | NDQ_013602 | compound machines | example of a third class lever | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | c |
12,828 | NDQ_013603 | compound machines | any machine that consists of more than one simple machine | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | a |
12,829 | NDQ_013604 | compound machines | A compound machine tends to be less efficient than a simple machine because a compound machine | null | null | Multiple Choice | a. produces more work., b. exerts a greater force., c. has more moving parts., d. none of the above | c |
12,830 | NDQ_013605 | compound machines | example of a wheel and axle that works as a pulley | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | e |
12,831 | NDQ_013606 | compound machines | Which of the following machines has the greatest mechanical advantage? | null | null | Multiple Choice | a. mountain bike, b. inline skate, c. roller skate, d. tricycle | a |
12,832 | NDQ_013607 | compound machines | machine consisting of a wheel and axle and a lever | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | d |
12,833 | NDQ_013610 | compound machines | machine consisting of two levers and two wedges | null | null | Multiple Choice | a. compound machine, b. mechanical advantage, c. fishing rod, d. wheelbarrow, e. fishing reel, f. efficiency, g. scissors | g |
12,834 | NDQ_013618 | compound machines | A wheel and axle is an example of a compound machine. | null | null | Multiple Choice | a. true, b. false | b |
12,835 | NDQ_013620 | compound machines | A pulley system that contains a fixed and a moveable pulley is a compound machine. | null | null | Multiple Choice | a. true, b. false | a |
12,836 | NDQ_013622 | compound machines | A single pulley is less efficient than a pulley system that consists of two or more pulleys. | null | null | Multiple Choice | a. true, b. false | b |
12,837 | NDQ_013623 | compound machines | The mechanical advantage of a compound machine is generally less than that of a simple machine. | null | null | Multiple Choice | a. true, b. false | b |
12,838 | NDQ_013625 | compound machines | Friction tends to be a bigger problem in a compound machine than in a simple machine. | null | null | Multiple Choice | a. true, b. false | a |
12,839 | NDQ_013626 | compound machines | Simple machines in a bicycle include | null | null | Multiple Choice | a. wheels and axles., b. pulleys., c. levers., d. all of the above | d |
12,840 | NDQ_013627 | compound machines | Which of the following is a compound machine? | null | null | Multiple Choice | a. wheel and axle, b. scissors, c. pulley, d. lever | b |
12,841 | NDQ_013628 | compound machines | Which of the following machines contains one or more levers? | null | null | Multiple Choice | a. wheelbarrow, b. scissors, c. fishing rod, d. all of the above | d |
12,842 | NDQ_013629 | compound machines | The fulcrum in a pair of scissors is always located | null | null | Multiple Choice | a. between the input and output points., b. closer to the input point., c. closer to the output point., d. two of the above | a |
12,843 | NDQ_013630 | compound machines | The mechanical advantage of a compound machine equals the | null | null | Multiple Choice | a. sum of the mechanical advantages of all its simple machines., b. product of the mechanical advantages of all its simple machines., c. highest mechanical advantage of all its simple machines., d. average mechanical advantage of all of its simple machines. | b |
12,844 | NDQ_013631 | compound machines | The way friction is reduced in a compound machine such as a car is with | null | null | Multiple Choice | a. fans., b. heaters., c. lubricants., d. none of the above | c |
12,845 | NDQ_013632 | compound machines | Some compound machines consist of thousands of simple machines. | null | null | Multiple Choice | a. true, b. false | a |
12,846 | NDQ_013633 | compound machines | The output force is exerted by the handle ends of the levers in scissors. | null | null | Multiple Choice | a. true, b. false | b |
12,847 | NDQ_013634 | compound machines | Scissors change the direction of the input force. | null | null | Multiple Choice | a. true, b. false | a |
12,848 | NDQ_013635 | compound machines | The fulcrum in a fishing rod is at the center of the rod. | null | null | Multiple Choice | a. true, b. false | b |
12,849 | NDQ_013636 | compound machines | Compound machines have more moving parts than simple machines. | null | null | Multiple Choice | a. true, b. false | a |
12,850 | NDQ_013637 | compound machines | The fewer simple machines a compound machine contains, the greater its mechanical advantage. | null | null | Multiple Choice | a. true, b. false | b |
12,851 | NDQ_013638 | compound machines | Compound machines have more friction to overcome than do simple machines. | null | null | Multiple Choice | a. true, b. false | a |
12,852 | NDQ_013639 | types of energy | energy stored in an object because of its position or shape | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | g |
12,853 | NDQ_013640 | types of energy | A leaf hanging motionless on a tree has | null | null | Multiple Choice | a. no energy., b. elastic energy., c. kinetic energy., d. potential energy. | d |
12,854 | NDQ_013641 | types of energy | stored energy due to an objects shape | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | f |
12,855 | NDQ_013642 | types of energy | When a moving bat hits a ball, what happens to the kinetic energy of the bat? | null | null | Multiple Choice | a. All of it becomes potential energy., b. Most of it is transferred to the ball., c. All of it is used up and gone., d. Most of it changes to heat. | b |
12,856 | NDQ_013643 | types of energy | use of force to move matter | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | d |
12,857 | NDQ_013644 | types of energy | A 40-kilogram boy is running at a velocity of 3 m/s. What is his kinetic energy? | null | null | Multiple Choice | a. 180 J, b. 120 J, c. 43 J, d. 13 J | a |
12,858 | NDQ_013645 | types of energy | Lana, who weighs 400 newtons, is about to dive from a 10-meter diving board. Her gravitational potential energy is | null | null | Multiple Choice | a. 40 J, b. 2000 J, c. 4000 J, d. 40,000 J | c |
12,859 | NDQ_013646 | types of energy | energy of moving matter | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | b |
12,860 | NDQ_013647 | types of energy | stored energy due to an objects position | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | e |
12,861 | NDQ_013648 | types of energy | Energy is converted from kinetic energy to potential energy when you | null | null | Multiple Choice | a. ski down a hill., b. climb a mountain., c. run around a level track., d. two of the above | b |
12,862 | NDQ_013650 | types of energy | ability to do work | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | a |
12,863 | NDQ_013651 | types of energy | process in which energy changes from one type or form to another | null | null | Multiple Choice | a. energy, b. kinetic energy, c. energy conversion, d. work, e. gravitational potential energy, f. elastic potential energy, g. potential energy | c |
12,864 | NDQ_013659 | types of energy | The atoms of matter have kinetic energy. | null | null | Multiple Choice | a. true, b. false | a |
12,865 | NDQ_013661 | types of energy | An objects velocity affects its kinetic energy more than its mass does. | null | null | Multiple Choice | a. true, b. false | a |
12,866 | NDQ_013664 | types of energy | A heavier object has less gravitational potential energy than a lighter object at the same height. | null | null | Multiple Choice | a. true, b. false | b |
12,867 | NDQ_013666 | types of energy | Compressing a spring gives it potential energy. | null | null | Multiple Choice | a. true, b. false | a |
12,868 | NDQ_013667 | types of energy | Energy conversions cannot be reversed. | null | null | Multiple Choice | a. true, b. false | b |
12,869 | NDQ_013668 | types of energy | The ability to cause a change in matter is one definition of | null | null | Multiple Choice | a. work., b. force., c. energy., d. motion. | c |
12,870 | NDQ_013669 | types of energy | Forms of energy include | null | null | Multiple Choice | a. mechanical energy., b. electrical energy., c. chemical energy., d. all of the above | d |
12,871 | NDQ_013670 | types of energy | What is the kinetic energy of an object that has a mass of 10 kg and a velocity of 1 m/s? | null | null | Multiple Choice | a. 100 J, b. 10 J, c. 5J, d. 1J | c |
12,872 | NDQ_013671 | types of energy | What is the gravitational potential energy of an object that has a weight of 12 N and is 3 m above the ground? | null | null | Multiple Choice | a. 108 J, b. 36 J, c. 15 J, d. 4J | b |
12,873 | NDQ_013672 | types of energy | Which statement is false about objects with kinetic energy? | null | null | Multiple Choice | a. They are in motion., b. They are doing work., c. They are moving matter over a distance., d. They are using up their energy by moving. | d |
12,874 | NDQ_013673 | types of energy | The SI unit for energy is the | null | null | Multiple Choice | a. joule., b. newton., c. newton meter., d. two of the above | d |
12,875 | NDQ_013674 | types of energy | Which type(s) of energy does a person have when jumping on a trampoline? | null | null | Multiple Choice | a. kinetic energy, b. elastic potential energy, c. gravitational potential energy, d. all of the above | d |
12,876 | NDQ_013675 | types of energy | Most forms of energy can also be classified as kinetic or potential energy. | null | null | Multiple Choice | a. true, b. false | a |
12,877 | NDQ_013676 | types of energy | If the mass of an object doubles, its kinetic energy is only half as great. | null | null | Multiple Choice | a. true, b. false | b |
12,878 | NDQ_013677 | types of energy | Kinetic energy and velocity have an inverse relationship. | null | null | Multiple Choice | a. true, b. false | b |
12,879 | NDQ_013678 | types of energy | Clothes hanging motionless on a clothesline do not have any energy. | null | null | Multiple Choice | a. true, b. false | b |
12,880 | NDQ_013679 | types of energy | Changing the shape of an elastic material gives it potential energy. | null | null | Multiple Choice | a. true, b. false | a |
12,881 | NDQ_013680 | types of energy | If you double the weight of an object, its gravitational potential energy also doubles. | null | null | Multiple Choice | a. true, b. false | a |
12,882 | NDQ_013681 | types of energy | The higher above the ground you are, the less gravitational potential energy you have. | null | null | Multiple Choice | a. true, b. false | b |
12,883 | NDQ_013682 | types of energy | The energy of a child on a swing changes back and forth between kinetic and potential energy. | null | null | Multiple Choice | a. true, b. false | a |
12,884 | NDQ_013683 | types of energy | Some of the kinetic energy of the child in question 8 is given off as heat. | null | null | Multiple Choice | a. true, b. false | a |
12,885 | NDQ_013684 | types of energy | Energy conversions are always permanent changes in energy. | null | null | Multiple Choice | a. true, b. false | b |
12,886 | NDQ_013685 | forms of energy | energy released when atomic nuclei split apart | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | c |
12,887 | NDQ_013686 | forms of energy | The sum of an objects kinetic and potential energy is its | null | null | Multiple Choice | a. thermal energy., b. chemical energy., c. mechanical energy., d. none of the above | c |
12,888 | NDQ_013687 | forms of energy | total kinetic energy of all the atoms in an object | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | d |
12,889 | NDQ_013688 | forms of energy | Which form of energy travels in waves through empty space? | null | null | Multiple Choice | a. sound energy, b. electrical energy, c. electromagnetic energy, d. two of the above | c |
12,890 | NDQ_013689 | forms of energy | energy stored in chemical bonds | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | a |
12,891 | NDQ_013690 | forms of energy | Which energy conversion occurs in a battery? | null | null | Multiple Choice | a. electrical energy chemical energy, b. electromagnetic energy light energy, c. chemical energy light energy, d. chemical energy electrical energy | d |
12,892 | NDQ_013691 | forms of energy | Energy stored in the nucleus of an atom is called | null | null | Multiple Choice | a. electromagnetic energy., b. electrical energy., c. thermal energy., d. nuclear energy. | d |
12,893 | NDQ_013692 | forms of energy | energy of an object that is moving or has the potential to move | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | f |
12,894 | NDQ_013693 | forms of energy | energy that travels in waves through matter from a vibrating object | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | g |
12,895 | NDQ_013694 | forms of energy | If two objects have the same mass, which object has greater thermal energy? | null | null | Multiple Choice | a. The object with larger atomic nuclei., b. The object with faster-moving atoms., c. The object with faster-moving electrons., d. The object with stronger chemical bonds. | b |
12,896 | NDQ_013696 | forms of energy | kinetic energy of moving electrons | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | b |
12,897 | NDQ_013697 | forms of energy | energy that travels in electrical and magnetic waves | null | null | Multiple Choice | a. chemical energy, b. electrical energy, c. nuclear energy, d. thermal energy, e. electromagnetic energy, f. mechanical energy, g. sound energy | e |
12,898 | NDQ_013705 | forms of energy | Stars release electromagnetic energy into space. | null | null | Multiple Choice | a. true, b. false | a |
12,899 | NDQ_013707 | forms of energy | The energy stored in food is chemical energy. | null | null | Multiple Choice | a. true, b. false | a |
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