front 1 speed is the rate of change in ___________ | back 1 distance |
front 2 to describe velocity you need to know _____ and _____________ | back 2 speed & direction |
front 3 when you graph the motion of an object, you put ______ on the horizontal axis and ___________ on the vertical axis | back 3 time & distance |
front 4 acceleration involves a change in ________ | back 4 speed/direction |
front 5 inertia depends on ___________________________________________________ | back 5 resist a change in its motion |
front 6 if you exert a force on an object in motion you will change its _____________ | back 6 momentum |
front 7 the distance traveled divided by the time taken to travel the distance is ___________ _______ | back 7 speed |
front 8 momentum is a measure of ___________________________________________________ | back 8 how hard it is to stop an object |
front 9 forces that are equal in size but opposite in direction are ______________ | back 9 balanced forces |
front 10 if gravity did not affect the path of a horizontally thrown ball, the ball would __________________________ | back 10 travel horizontally |
front 11 newton's first law of motion states that an object remains at rest unless a(n) __________ force acts on it | back 11 unbalanced |
front 12 the force you have to overcome to start an object moving is _______________________ | back 12 static friction |
front 13 whenever a body is in motion, there is always __________ to oppose the motion | back 13 friction |
front 14 the relationship among force, mass, and acceleration is stated in newton's _____ law | back 14 2nd |
front 15 the statement "for every action, there is an equal but opposite reaction" is a statement of newton's ___ law | back 15 3rd |
front 16 with action-reaction forces, what happens first? | back 16 forces are created at the same time |
front 17 when a diver jumps off a diving board, gravity pulls him or her down to the water. what is the reaction force to earth's gravity? | back 17 air resistance slows the diver |
front 18 which of the following is NOT an example of work being done?
| back 18 a. the moon orbiting earth |
front 19 a slanted surface used to raise an object is a(n) ____________________ | back 19 inclined plane |
front 20 a device that does work with only one movement and changes the size or direction of a force is a(n) _______________________ | back 20 simple machine |
front 21 a bar that is free to pivot about a fixed point is a ______ | back 21 lever |
front 22 the rate at which work is done is called _______ | back 22 power |
front 23 the work output of a machine divided by the work output is the ____________________________ of the machine | back 23 efficiency |
front 24 the amount by which a machine multiplies an input force is called the ________________ | back 24 mechanical advantage |
front 25 an inclined plane with one or two sloping sides forms a machine called a ________ | back 25 wedge |
front 26 an inclined plane wrapped around a cylinder is a _______ | back 26 screw |
front 27 a winding mountain road is an example of a(n) ________ | back 27 screw |
front 28 when two or more simple machines work together, they are called a(n) ____________________ | back 28 compound |
front 29 three of the following simple machines are basically the same. which one that does NOT belong in the group?
| back 29 wedge |
front 30 which one of the following is NOT an example of a mechanical wave? | back 30 radio wave |
front 31 which one of the following is NOT an example of an electromagnetic wave?
| back 31 sound wave |
front 32 which one of the following is NOT an example of a compressional wave?
| back 32 d. green light traveling through the air |
front 33 tsunamis have a large amount of energy because of their large _____________ | back 33 amplitude |
front 34 a place where molecules are far apart is a ______________ | back 34 rarefaction |
front 35 when light bounces off a surface it is called ___________ | back 35 reflection |
front 36 in which one of the following cases will refraction occur?
| back 36 a. light traveling from air to glass |
front 37 to produce sound, an object must be __________ | back 37 vibrating |
front 38 you produce speech by vibration of the _______ | back 38 vocal cords |
front 39 ____________ is the human perception of the energy a wave carries | back 39 loudness |
front 40 sound travels fastest in a __________ | back 40 solid |
front 41 when you speak, your words are transferred to a friend by ______________________ | back 41 molecules colliding |
front 42 if you pass a building with a siren sounding, as you move away from the building, the sirens will sound ___________ | back 42 lower |
front 43 the part of the ear that transfers sound vibrations to the cochlea is the ___________________ | back 43 oval window |
front 44 the number of waves that pass a certain point in one second is the wave's ________________ | back 44 frequency |
front 45 sunscreen protects the skin from damage caused by _________________ | back 45 u.v. radiation |
front 46 a wave transfers ___________ | back 46 energy |
front 47 electromagnetic waves are produced by ___________________________________________________ | back 47 charged particles in motion |
front 48 vibrating charged particles make _______________ fields | back 48 magnetic/electric |
front 49 electromagnetic waves carry ______________ energy | back 49 radiant |
front 50 the longest wavelength in the electromagnetic spectrum is the ______________ | back 50 radio waves |
front 51 the electromagnetic waves with wavelengths slightly longer than visible light are _____________ | back 51 infrared |
front 52 _____________ are used for medical imaging | back 52 x-rays |
front 53 television uses ____________________ to transmit signals | back 53 radio waves |
front 54 the material in which a wave travels is called ___________ | back 54 medium |
front 55 glass is an example of a ____________ material | back 55 transparent |
front 56 if an object looks blue, it reflects ________ waves | back 56 blue |
front 57 how can you describe the image formed by a plane mirror? | back 57 upright & reversed |
front 58 if light waves change speed when they pass from one medium into another, the light will be ____________ | back 58 refracted |
front 59 which one of the following is think in the middle and thin at the edges?
| back 59 convex lens |
front 60 normally, atoms are electrically neutral because there are _________________________________________ | back 60 equal # of protons & electrons |
front 61 the buildup of electric charges on an object is called a ___________________ | back 61 static charge |
front 62 a material through which electrons do NOT readily flow is a(n) _______________ | back 62 insulator |
front 63 two objects will attract one another when they have _____________________________ | back 63 opposite charges |
front 64 one example of a good conductor is ________ | back 64 copper |
front 65 a magnetic field gets stronger as you ____________________________ | back 65 get closer to the charge |
front 66 the steady flow of electrons through a conductor is ____________ | back 66 electric current |
front 67 a battery is not used in which of the following:
| back 67 microwave |
front 68 copper is used in household wiring because _____________________ | back 68 it has a low resistance |
front 69 a path created for a current that allows only one route for the current is called a _________________ | back 69 series circuit |
front 70 the rate at which an electrical device converts energy from one form to another is called _________ | back 70 electrical power |
front 71 which of the following is a device designed to open an overload circuit and prevent overloading?
| back 71 circuit breaker |
front 72 electric companies usually sell electrical energy in units of ___________ | back 72 kilowatt hours |
front 73 a circuit that has two or more separate paths for electrons to follow is a(n) ___________________ | back 73 parallel circuit |
front 74 the south pole of a magnet ________________________ | back 74 attracts the north pole |
front 75 when you break an iron magnet into two pieces, you get ______________ | back 75 2 north poles & 2 south poles |
front 76 the location of the strongest magnetic field is the ______ | back 76 magnetic pole |
front 77 the region around a magnet where the magnetic forces act is the ________________________ | back 77 magnetic field |
front 78 atoms become magnets when their _____________ are properly arranged | back 78 electrons |
front 79 an electromagnet is _______________________________
| back 79 only operating when the current is on |
front 80 the function of an electric motor is to change ______________________________ | back 80 electrical energy into mechanical energy |
front 81 a current carrying wire wrapped around an iron ore is called a(n) ___________________ | back 81 electromagnet |
front 82 changing the current changes the __________________ of an electromagnet | back 82 direction/strength |
front 83 current that does not reverse direction is called ______________________ | back 83 direct current |
front 84 a current that reverses direction in a regular pattern is called a(n) ____________________________ | back 84 alternating current |
front 85 knife | back 85 wedge |
front 86 leaf rake | back 86 lever |
front 87 wheelchair ramp | back 87 inclined plane |
front 88 potter's wheel | back 88 wheel & axle |
front 89 threaded bolt | back 89 screw |
front 90 does not require a medium to travel through | back 90 electromagnetic wave |
front 91 light waves and water waves are examples of this | back 91 transverse wave |
front 92 interaction of various different waves | back 92 interference |
front 93 can be either transverse or compressional | back 93 mechanical wave |
front 94 sound waves are an example of this | back 94 compressional wave |