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Science
6th -
9thgrade
Energy Transformation and Law of Conservation of Energy
22 questions
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- Multiple ChoicePlease save your changes before editing any questions.The Law of Conservation of Energy states:Energy can created or destroyed but not transformedEnergy cannot be created or destroyed, it can only transformedEnergy can't be created, destroyed or transformed
- Multiple ChoicePlease save your changes before editing any questions.According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?The total amount of energy is conservedThe total amount of energy is less after a reactionThe total amount of energy is more after a reaction
- Multiple ChoicePlease save your changes before editing any questions.Which energy transformation below matches?
A book falling?chemical to sound and heatkinetic to sound and heatelectrical to sound and heat - Multiple ChoicePlease save your changes before editing any questions.
Which is an example of a single energy transformation?
A toaster converts electrical to thermal energy
A match converts mechanical to thermal to electromagnetic
A biker converts chemical to mechanical to thermal
A car converts chemical to thermal to mechanical
- Multiple ChoicePlease save your changes before editing any questions.
What is an example of multiple energy transformations?
Your body transforms chemical to thermal
Your body transforms chemical to mechanical
a flashlight converts chemical energy in batteries to electrical to electromagnetic energy in light
a phone converts electrical to electromagnetic
- Multiple ChoicePlease save your changes before editing any questions.Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?Chemical to lightElectrical to chemicalElectrical to lightChemical to electrical
- Multiple ChoicePlease save your changes before editing any questions.What energy transformations take place when a battery-operated radio is in use?Electrical to chemical to lightSound to chemical to mechanicalChemical to electrical to soundLight to electrical to thermal
- Multiple ChoicePlease save your changes before editing any questions.Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?radiantlightheatchemical
- Multiple ChoicePlease save your changes before editing any questions.When electrical energy flows through a light-bulb it creates ___heat energy onlyheat and radiant energyradiant energy onlymotion energy
- Multiple ChoicePlease save your changes before editing any questions.When you plug in an iron, electrical energy is transformed into ______ energysoundmechanicalthermal (heat)radiant
- Multiple ChoicePlease save your changes before editing any questions.When a construction worker hits a hammer into plank of wood, the mechanical energy from the hit becomes _____ energyradiantelecticalheat and soundchemical
- Multiple ChoicePlease save your changes before editing any questions.Electrical -> Mechanical -> SoundA triple beam balance measuring an object’s massA pencil sharpener plugged into a wall outletA projector displaying a diagram on the screenA working flashlight used to light up a dark corner
- Multiple ChoicePlease save your changes before editing any questions.
The hand generator works by turning the handle which lights up the bulb. What energy transformation occurs as the handle is turned?
Thermal to electrical
Electrical to mechanical
Mechanical to electrical to light
Light to electrical
- Multiple ChoicePlease save your changes before editing any questions.Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?Chemical to lightElectrical to chemicalElectrical to lightChemical to electrical
- Multiple ChoicePlease save your changes before editing any questions.
Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed into
electrical energy.
mechanical motion.
heat and light energy.
electrical and heat energy.
- Multiple ChoicePlease save your changes before editing any questions.
The light bulb converts electrical energy into light and _________.
chemical
electromagnetic
heat
nuclear
- Multiple ChoicePlease save your changes before editing any questions.An iron heats up to iron clotheseletrical to thermal energypotential to kinetic energypotential energy to thermal energychemical energy to mechanical energy
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following statements most accurately describes how a ipod is able to play music after it has been plugged in?
The ipod is able to play music because it is using up the electrical energy from the wall.
The electrical energy is transferred from the wall allowing the ipod to make sound energy as music.
The ipod is able to play music because the outlet is creating electrical energy that is transformed to sound energy.
The electrical energy from the outlet is transformed to chemical energy and then to sound and light energy when the ipod is used to play music.
- Multiple ChoicePlease save your changes before editing any questions.People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?mechanical to thermal to electricalchemical to mechanical to thermalmechanical to chemical to soundchemical to sound to electrical
- Multiple ChoicePlease save your changes before editing any questions.Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?radiantlightheatchemical
- Multiple ChoicePlease save your changes before editing any questions.In energy transformations, "wasted energy" usually takes what form?heatchemical energylightsound waves
- Multiple ChoicePlease save your changes before editing any questions.
A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
The chemical energy stored in the match changed to thermal energy and light energy.
The thermal energy stored in the match changed to light energy and chemical energy.
The light energy and thermal energy stored in the match changed to mechanical energy.
The light energy and thermal energy stored in the match changed to chemical energy.