125124
Descripción
Test por chrisrod98, actualizado hace más de 1 año
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Creado por chrisrod98
hace más de 11 años
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Pregunta 1
Pregunta
What is a Joule?
Respuesta
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A unit of energy
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A type of energy
Pregunta 2
Pregunta
Why is energy important?
Respuesta
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It makes things move and grow.
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It is required to make things happen.
Pregunta 3
Pregunta
What is potential energy?
Respuesta
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Energy which can be change to different types.
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Energy stored in an object due to its position.
Pregunta 4
Pregunta
What is heat energy?
Respuesta
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Energy that is possessed by all hot objects.
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Energy which is hot
Pregunta 5
Pregunta
What is chemical potential energy?
Respuesta
-
Energy held in bonds between atoms.
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Energy from chemicals
Pregunta 6
Pregunta
What is kinetic energy?
Respuesta
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Energy from stationary objects
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Energy possessed by all moving objects.
Pregunta 7
Pregunta
What is a Watt?
Respuesta
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A unit of energy
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A unit of power
Pregunta 8
Pregunta
What is electrical energy?
Respuesta
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Currents in electric.
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Energy carried by moving charges
Pregunta 9
Pregunta
Gravitational potential energy?
Respuesta
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Energy possessed by all objects, which are high up
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Energy in falling objects
Pregunta 10
Pregunta
What is elastic potential energy?
Respuesta
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Energy in rubber bands
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Energy stored in squashed or stretched objects
Pregunta 11
Pregunta
What is nuclear potential energy?
Respuesta
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Energy stored in the nucleus of an object.
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Energy in radioactive materials
Pregunta 12
Pregunta
When would an object have more kinetic energy?
Respuesta
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When it increases speed
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When it slows down
Pregunta 13
Pregunta
Why is heat energy a type of kinetic energy?
Respuesta
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Because fire moves
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Because it is due to the movement of particles, which speed up when an object is heated.
Pregunta 14
Pregunta
What is radiant energy?
Respuesta
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Energy carried by electromagnetic waves like light and xrays.
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Energy that is radiant
Pregunta 15
Pregunta
1 Kilo Joule is equal to...
Respuesta
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1000 Joules
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100 Joules
Pregunta 16
Pregunta
1 calorie is equal to...
Respuesta
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4 kilo Joules
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4.2 kilo Joules
Pregunta 17
Pregunta
How to interpret constant speed?
Respuesta
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Equal distance in equal interval of time
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The graph is bent
Pregunta 18
Pregunta
How to interpret accelerating graph?
Respuesta
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Unequal distance in equal interval of time
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Straight graph
Pregunta 19
Pregunta
Energy input=_____ energy+_______ energy
Respuesta
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Useful and waste
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heat and chemical
Pregunta 20
Pregunta
How to find the energy efficiency of something?
Respuesta
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Divide by 5 then times 100
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Useful energy output divide total energy input times 100 and answer is in %
Pregunta 21
Pregunta
How to find distance with speed and time?
Respuesta
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Speed divided by time
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Time divide by speed
Pregunta 22
Pregunta
How to find time with distance and velocity?
Respuesta
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Distances divide by velocity.
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Times distance by velocity
Pregunta 23
Pregunta
What is the conservation of energy law?
Respuesta
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Energy can neither be created or destroyed but it can be changed from one form to another (or passed between objects)
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Energy cannot be over used
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