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a ball rolling is an example of an object moving & moving changes potential energy into kinetic energy and heat energy | a ball rolling will change the potential energy of the ball into kinetic energy and heat energy |
a ball rolling will change the potential energy of the ball into kinetic energy and heat energy & down the hill is a kind of direction & a metal ball is a kind of ball | a metal ball rolling down the hill will change the potential energy into kinetic energy and heat energy |
potential energy of an object is determined by the mass and the height of the object & a roller coaster is a kind of object | potential energy of the roller coaster is determined by its mass and its height |
potential energy of the roller coaster is determined by its mass and its height & the height of a roller coaster car is known | if we know the mass of the roller coaster, then we can determine the potential energy of the rollar coaster |
a soccer ball is going upward after being kicked & going upwards means increasing the altitude | the altitude of the soccer ball is increasing |
a ball is a kind of object & a soccer ball is a kind of ball | a soccer ball is a kind of object |
the altitude of the soccer ball is increasing & a soccer ball is a kind of object & as the altitude of an object increases , the potential energy of the object will increase | the potential energy of the soccer ball will increase |
substances are made of molecules & water is a kind of substance | water is made of molecules |
water is made of molecules & temperature is a measure of kinetic energy of molecules | the temperature of the water is a measure of the kinetic energy of molecules |
as matter vibrates harder / faster , the volume of the sound produced will increase & a string is a kind of object made from matter | as a string vibrates harder / faster , the volume of the sound produced will increase |
as a string vibrates harder / faster , the volume of the sound produced will increase & as a string of a musical instrument is plucked harder , the string will vibrate harder / faster | as a string of a musical instrument is plucked harder, the volume of the sound will increase |
as a string of a musical instrument is plucked harder, the volume of the sound will increase & as a string of a musical instrument is plucked harder , the pitch produced will not change | as the string of a musical instrument is plucked harder, the pitch will stay the same and the volume of the sound will increase |
as the string of a musical instrument is plucked harder, the pitch will stay the same and the volume of the sound will increase & a guitar is a kind of musical instrument | as the string of a guitar is plucked harder, the pitch will stay the same and the volume of the sound will increase |
there is a sound wave with large amplitude & there is a sound wave with small amplitude & as the amplitude of a sound wave increases , the volume of that sound wave will increase | the sound wave with large amplitude would have a bigger volume than the sound wave with small amplitude |
the sound wave with large amplitude would have a bigger volume than the sound wave with small amplitude & volume is a property of sound and includes ordered values of quiet / normal / loud | the sound wave with large amplitude would be louder than the sound wave with small amplitude |
there is a sound wave with large amplitude & as the amplitude of a sound wave increases , the amount of energy in that sound wave will increase & there is a sound wave with small amplitude | the sound wave with large amplitude would have more energy than the sound wave with small amplitude |
the sound wave with large amplitude would be louder than the sound wave with small amplitude & the sound wave with large amplitude would have more energy than the sound wave with small amplitude | the sound wave with large amplite would be louder and have more energy than the sound wave with small amplitude |
a canyon wall is a kind of surface & echo is when sound reflects off of a surface | sound can reflect off the canyon wall and produce an echo |
a person speaking is a source of sound & echo is when sound reflects off of a surface | the sound of a person speaking can reflect off of a surface and produce echo |
the sound of a person speaking can reflect off of a surface and produce echo & cave walls are a kind of surface | if a person makes sound in the cave, then the sound will reflect off from the cave wall and produce echo |
objects are made of matter & a rubber band is a kind of object | a rubber band is made of matter |
a rubber band is made of matter & vibrating matter can produce sound | vibrating the matter in the rubber band can produce sound |
vibrating the matter in the rubber band can produce sound & snapping a rubber band can cause the matter in the rubber band to vibrate | snapping a rubber band will produce sound |
vibrations are a source of sound & plucking a string can cause that string to vibrate | plucking a string can be a source of sound through vibrations |
plucking a string can be a source of sound through vibrations & a source of something emits / produces / generates / provides that something | plucking a string can produce sound through vibrations |
a rubber band is a kind of object & objects are made of matter | a rubber band is made of matter |
a rubber band is made of matter & vibrating matter can produce sound | vibrating the matter in the rubber band can produce sound |
tapping two objects together causes the particles in those objects to vibrate & glass is a kind of object & a fork is a kind of object | tapping a fork against a glass causes the particles in the objects to vibrate |
tapping a fork against a glass causes the particles in the objects to vibrate & vibrations are a source of sound | the vibration of the particles caused by tapping the fork on a glass is a source of sound |
the vibration of the particles caused by tapping the fork on a glass is a source of sound & a source of something produces that something | the vibration of the particles caused by tapping the fork on a glass produces sound |
the molecules in the wood begin to vibrate from the force of the book & molecules vibrating can cause sound | the vibration of molecules can cause sound |
the vibration of molecules can cause sound & sound is made of sound waves | the vibration of molecules can cause sound wave |
sound energy is transferred by vibrational waves & intense sound energy can move objects | insense sound energy can move objects by making them vibrate |
insense sound energy can move objects by making them vibrate & a thunder has intense sound energy | a thunder can move objects by making them vibrate through intense sound energy |
a thunder can move objects by making them vibrate through intense sound energy & a window is a kind of object | a thunder can move a window by making them vibrate through intense sound energy |
a thunder can move a window by making them vibrate through intense sound energy & a rattle is a kind of vibration | a thunder can make a window rattle through intense sound energy |
matter is made of particles & air is a kind of matter | air is a matter made of air particles |
air is a matter made of air particles & sound requires matter to travel | sound can travel through air |
vibration is a kind of motion & something requires motion to travel | something can travel by vibrations |
sound can travel through air & something can travel by vibrations | sound can travel through air by vibrating air |
someone plays the flute & if a flute is played, then the air in the flute will vibrate | the air in the flute will vibrate when the flute is played |
the air in the flute will vibrate when the flute is played & vibrations are a source of sound | the vibrations of air in the flute are a source of sound when the flute is played |
sound wave is a kind of wave & a wave is formed by the vibration of the source spreading around from the source | sound wave is formed by the vibration of the source spreading around from the source |
sound wave is formed by the vibration of the source spreading around from the source & spreading around is similar to spreading in all directions | sound waves spread in all directions away from their source |
sound requires matter to travel & a vacuum has no matter in it | sound cannot travel through a vacuum |
blowing air into a whistle causes air to vibrate inside the whistle & vibrations are a source of sound | the air vibrations inside the whistle are a source of sound |
the air vibrations inside the whistle are a source of sound & sound waves spread in all directions away from their source | the air vibration inside the whistle causes the sound waves to spread in all directions |
if the particles are closer to each other, then the vibrations of particles will travel faster & particles in solid are closest to each other among gas, liquid, and solid state of matter | vibrations of particles will travel the fastest in solid state of matter |
vibrations of particles will travel the fastest in solid state of matter & sound travels through vibrations of particles | sound travels fastest through solid |
if the particles are farther away from each other, then the vibrations of particles will spread slower & particles in gas are the farthest away from each other among gas, liquid, and solid state of matter | vibrations of particles will travel the slowest in gas |
vibrations of particles will travel the slowest in gas & sound travels through vibrations of particles | sound travels slowest through gas |
sound travels fastest through solid & sound travels slowest through gas | sound travels fastest through solid and slowest through gas |
iron is a kind of solid & sound travels fastest through solid | sound will travel fastest in iron |
a rock is usually a solid & sound travels fastest through solid | sound travels fastest in a rock |
removing hot objects from a heat source requires thermal insulators & an oven is a source of heat & a pan is a kind of object | removing a hot pan from an oven requires a thermal insulator |
removing a hot pan from an oven requires a thermal insulator & potholders are used to remove hot pans from an oven | potholders are used as a thermal insulator to remove a hot pan from an oven |
steam is hot in temperature & a hot substance is a source of heat | steam is a source of heat |
cooking food requires adding heat energy to the food & a source of heat can be used to heat something | a source of heat can be used to cook food by adding heat energy to the food |
steam is a source of heat & a source of heat can be used to cook food by adding heat energy to the food | steam can be used to cook food by adding heat to the food |
steam can be used to cook food by adding heat to the food & adding heat to something means trasferring heat to that something | steam can be used to cook food by transferring heat to the food |
if one object touches something then one is exposed to that something & a metal spoon is touching the pan | the metal spoon is exposed to the pan |
the metal spoon is exposed to the pan & the pan is a source of heat | the metal spoon is exposed to a source of heat |
a spoon sometimes is made of metal & metal is a thermal conductor | a spoon is a kind of thermal conductor |
a spoon is a kind of thermal conductor & if a thermal conductor is exposed to a source of heat then that conductor may become hot / warm | if a spoon is exposed to a source of heat, then the conductor may become hot |
the metal spoon is exposed to a source of heat & if a spoon is exposed to a source of heat, then the conductor may become hot | the metal spoon will become home |
thermal conduction is when heat flows from warmer object to cooler object & when a cooler object touches a warmer object , thermal conduction occurs | heat flows from warmer object to cooler object through thermal conduction when two objects are touching |
a spoon sometimes is made of metal & metal is a thermal / thermal energy conductor | a metal spoon is a thermal conductor |
a hot substance is a source of heat & soup is a kind of substance | hot soup is a source of heat |
hot soup is a source of heat & a metal spoon is placed in a pot of hot soup | the hot soup will be a source of heat for the metal spoon |
a metal spoon is a thermal conductor & the hot soup will be a source of heat for the metal spoon & if a thermal conductor is exposed to a source of heat, then thermal conduction will make the thermal conductor become hot | the metal spoon will be heated up by thermal conduction |
a spoon sometimes is made of metal & metal is a thermal / thermal energy conductor | a metal spoon is a thermal conductor |
a hot substance is a source of heat & soup is a kind of substance | hot soup is a source of heat |
hot soup is a source of heat & a metal spoon is placed in a pot of hot soup | the hot soup will be a source of heat for the metal spoon |
a metal spoon is a thermal conductor & the hot soup will be a source of heat for the metal spoon & if a thermal conductor is exposed to a source of heat, then thermal conduction will make the thermal conductor become hot | the metal spoon will be heated up by thermal conduction |
a spoon sometimes is made of metal & metal is a thermal / thermal energy conductor | a metal spoon is a thermal conductor |
soup is a kind of substance & a hot substance is a source of heat | hot soup is a source of heat |
hot soup is a source of heat & a metal spoon is placed in a pot of hot soup | the hot soup will be a source of heat for the metal spoon |
a metal spoon is a thermal conductor & the hot soup will be a source of heat for the metal spoon & if a thermal conductor is exposed to a source of heat, then thermal conduction will make the thermal conductor become hot | the metal spoon will be heated up by thermal conduction |
thermal conduction is when materials conduct heat through those materials through collision of particles & thermal conduction is when heat flows from warmer object to cooler object | thermal conduction is a heat exchange process involving the collision of particles |
radiation is a kind of process & fire transfers heat through radiation & radiation is when heat is transferred through waves / particles | fire transfers heat through waves in the process of radiation |
fire transfers heat through waves in the process of radiation & a campfire is a kind of fire | the campfire transfers heat through waves in the process of radiation |
the sun transfers heat energy from itself to the planets / earth through sunlight & the sun is the source of energy for life on earth | the source of heat energy on earth is transferred from the sun to earth |
sunlight is a kind of light & light is a kind of electromagnetic radiation | sunlight is a kind of electromagnetic radiation |
sunlight is a kind of electromagnetic radiation & sunlight can shine through a window | sunlight is a kind of electromagnetic radiation that can shine through a window |
sunlight is a kind of electromagnetic radiation that can shine through a window & electromagnetic radiation transfers heat and light energy by radiation | sunlight can transfer heat and light energy through a window by radiation |
sunlight can transfer heat and light energy through a window by radiation & sunlight passes the windows of a car and heat up the car seat | the car seat is heated by the sunlight by radiation |
sunlight is a kind of light & light is a kind of electromagnetic wave | sunlight is a kind of electromagnetic wave |
sunlight is a kind of electromagnetic wave & radiation is when electromagnetic waves transfers heat and light energy | sunlight transfers heat and light energy through radiation |
sunlight transfers heat and light energy through radiation & the sun transmits light to earth through space | the sun transfers heat and light energy to earth through space by radiation |
lightning produces electromagnetic radiation of a wide range & lightning occurs during lightning storms / thunderstorms | the lightning in the thunderstorms produces eletromagnetic radiation of a wide range |
the lightning in the thunderstorms produces eletromagnetic radiation of a wide range & electromagnetic radiation distorts the frequency of the radio waves | the lightning in the thunderstorm will distort the frequency of the radio waves |
tossing a ball in the air cannot form a source of vibration & a wave is formed by the vibration of the source spreading around from the source | tossing a ball in the air cannot form a wave |
interruption of a radio signal is similar to distortion of a radio signal & interruption of a radio signal causes a buzzing sound | distortion of a radio signal causes a buzzing sound |
distortion of a radio signal causes a buzzing sound & radio signal is a kind of radio wave | distortion of the radio waves causes a buzzing sound |
distortion of the radio waves causes a buzzing sound & electromagnetic radiation distorts the frequency of the radio waves | electromagnetic radiation causes a buzzing sound by distorting the frequency of the radio waves |
electromagnetic radiation causes a buzzing sound by distorting the frequency of the radio waves & electromagnetic radiation is made of electromagnetic waves | electromagnetic waves cause a buzzing sound by distorting the frequency of the radio waves |
a surface is a kind of object & edge of a pond is a kind of surface | edge of a pond is a kind of object |
edge of a pond is a kind of object & the waves in the pond strike the edge of the pond & if something strikes an object then that something may bounce off of that object | the waves in the pond may bounce off the edge of the pond when they strike it |
the waves in the pond may bounce off the edge of the pond when they strike it & edge of a pond is a kind of surface & reflection is when a wave bounces off a surface and travels in the opposite direction relative to the angle of incidence | reflection of the waves will happen when the waves strike the edge of the pond |
sound waves transfer energy & x-rays transfer energy | both sound waves and x-rays transfer energy |