Design Energy Conversion Device - 4th Grade Science
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Which energy form describes the energy of a moving object?
Which energy form describes the energy of a moving object?
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Kinetic energy. Energy possessed by any object in motion.
Kinetic energy. Energy possessed by any object in motion.
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Identify the most common unwanted output in real devices that reduces efficiency.
Identify the most common unwanted output in real devices that reduces efficiency.
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Thermal energy (waste heat). Friction and resistance create unwanted heat.
Thermal energy (waste heat). Friction and resistance create unwanted heat.
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Which energy conversion happens in a battery-powered toy car when it moves?
Which energy conversion happens in a battery-powered toy car when it moves?
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Chemical energy to mechanical energy. Battery chemicals power the motor to spin wheels.
Chemical energy to mechanical energy. Battery chemicals power the motor to spin wheels.
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What is thermal energy?
What is thermal energy?
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Heat energy from particle motion. Faster particles mean more heat.
Heat energy from particle motion. Faster particles mean more heat.
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Which energy conversion happens in a solar calculator?
Which energy conversion happens in a solar calculator?
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Light energy to electrical energy. Solar panels convert sunlight to electricity.
Light energy to electrical energy. Solar panels convert sunlight to electricity.
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What is electrical energy?
What is electrical energy?
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Energy from moving electric charges. Electrons flow through wires and circuits.
Energy from moving electric charges. Electrons flow through wires and circuits.
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Which component in a simple circuit provides the energy source?
Which component in a simple circuit provides the energy source?
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Battery (cell). Stores chemical energy for the circuit.
Battery (cell). Stores chemical energy for the circuit.
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Which component converts electrical energy to light in a simple circuit?
Which component converts electrical energy to light in a simple circuit?
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Light bulb (lamp). Filament glows when electricity flows through.
Light bulb (lamp). Filament glows when electricity flows through.
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What is mechanical energy?
What is mechanical energy?
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Energy of motion or position of objects. Includes both kinetic and potential energy.
Energy of motion or position of objects. Includes both kinetic and potential energy.
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Which energy conversion happens in a toaster?
Which energy conversion happens in a toaster?
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Electrical energy to thermal energy. Electric current heats metal coils.
Electrical energy to thermal energy. Electric current heats metal coils.
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What is a fair test when comparing two energy-conversion device designs?
What is a fair test when comparing two energy-conversion device designs?
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Change one variable and keep others the same. Controls variables for accurate comparison.
Change one variable and keep others the same. Controls variables for accurate comparison.
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Which energy conversion happens in a speaker when it plays music?
Which energy conversion happens in a speaker when it plays music?
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Electrical energy to sound energy. Electric signals vibrate the speaker cone.
Electrical energy to sound energy. Electric signals vibrate the speaker cone.
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Which energy conversion happens in a flashlight?
Which energy conversion happens in a flashlight?
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Chemical energy to light energy. Battery chemicals power the bulb to glow.
Chemical energy to light energy. Battery chemicals power the bulb to glow.
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What is sound energy?
What is sound energy?
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Energy carried by vibrations in matter. Waves travel through air, water, or solids.
Energy carried by vibrations in matter. Waves travel through air, water, or solids.
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What is light (radiant) energy?
What is light (radiant) energy?
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Energy carried by light waves. Electromagnetic waves we can see.
Energy carried by light waves. Electromagnetic waves we can see.
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Which term means energy is not destroyed, only changed in form?
Which term means energy is not destroyed, only changed in form?
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Law of Conservation of Energy. Energy cannot be created or destroyed.
Law of Conservation of Energy. Energy cannot be created or destroyed.
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What is the output energy of a device?
What is the output energy of a device?
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The energy the device produces or delivers. Output is the final form after conversion.
The energy the device produces or delivers. Output is the final form after conversion.
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What is the input energy of a device?
What is the input energy of a device?
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The energy that enters the device. Input is the starting form before conversion.
The energy that enters the device. Input is the starting form before conversion.
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Which energy form is produced by vibrations that you can hear?
Which energy form is produced by vibrations that you can hear?
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Sound energy. Energy carried by vibrating air molecules.
Sound energy. Energy carried by vibrating air molecules.
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What is the energy conversion when a hand-crank generator lights an LED?
What is the energy conversion when a hand-crank generator lights an LED?
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Mechanical energy to electrical energy to light energy. Hand motion generates electricity that powers LED.
Mechanical energy to electrical energy to light energy. Hand motion generates electricity that powers LED.
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