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Energy Transfer

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- Energy can be converted from one form to another.
- Electricity can transfer energy from place to place.
- Light, sound and heat also transfer energy.
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Discussion Questions
- Before VideoWhat is energy?ANSWER
Energy makes things happen (or more formally: the ability to do work).
Although electrical energy is stored and transferred differently than the energy used by your body, all energy can make things happen. Motion energy, heat energy, sound energy and light energy can all be transferred from place to place.
Examples include a bike that powers a TV when it is pedaled, a water wheel, a wind turbine, etc.
No. Batteries convert energy from one form to another. They store chemical energy that is converted to electrical energy when connected to a device through wires.
- After VideoAt the beginning of the video, where did Bert’s energy go?ANSWER
Bert’s energy was transferred to several different devices that run on electricity such as Izzy's popcorn maker.
Dr. Jeff’s mom uses motion energy to pedal a bike, which spins a wheel that is attached to a generator. The generator changes the motion energy into electrical energy, which flows through wires to Bert. Bert then stores energy in his batteries to use later.
Generators don’t actually generate energy. Instead, they convert one type of energy to another. In the video you can see a generator convert motion energy into electrical energy when Dr. Jeff’s mom pedals the bike.
A toaster is an example of a device that converts electrical energy into heat energy. A lamp converts electrical energy into light energy and a boom box converts electrical energy into sound energy.
Power plants might generate electricity by using the power of moving water to spin a generator or by burning coal to produce steam, which also spins a generator.
Power plants do not produce energy, they only convert energy from one form to another. For example they can convert the energy from burning coal (chemical energy) into electricity (electrical energy).
A solar cell converts light energy to electrical energy.
The hot drink transfers energy to the ice which will cause the ice to melt. Since the hot drink is losing energy, it cools down.
Electricity only flows through a completed path we call a "closed circuit." Any opening in this path will stop the flow of electricity. A common example of a closed circuit would be a battery connected to a device through TWO wires which allow the electricity to flow in a loop.
When Dr. Jeff turns on very loud music near a pane of glass, some of that energy is converted to motion energy that causes the glass to bend, move and eventually shatter.
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Vocabulary
- Energy DEFINE
It makes things happen! (Or more formally: the ability to do work)
- Energy Transfer DEFINE
Energy being moved from place to place.
- Generator DEFINE
Changes energy from one form to another.
- Batteries DEFINE
Store energy and change it from one form to another.
- Solar Cell DEFINE
Converts energy of sunlight into electrical energy.
- Motion Energy DEFINE
The energy something has due to movement.
- Wind Turbine DEFINE
A device that produces energy by spinning big blades, which in turns spins a generator to make electricity.
- Energy DEFINE
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Reading Material
Download as PDF Download PDF View as Seperate PageDEFINITION OF ENERGY TRANSFER
Energy is the ability to do work, or in more simple terms: energy makes things happen. You use energy to ride your bike, play video games, bake cookies, and drive to school. Energy is exciting! Energy can be transferred from one object to another, and energy can be transferred into different forms, such as light, sound, and heat.
To better under how energy transfer works…
DEFINITION OF ENERGY TRANSFER Energy is the ability to do work, or in more simple terms: energy makes things happen. You use energy to ride your bike, play video games, bake cookies, and drive to school. Energy is exciting! Energy can be transferred from one object to another, and energy can be transferred into different forms, such as light, sound, and heat. To better under how energy transfer works…LET’S BREAK IT DOWN!
What is energy?
Energy is the ability to do work. There are many different kinds of energy, such as light, sound, and heat.
We need energy for our homes to power lights, refrigerators, air conditioners, and computers. We use energy when we drive cars or pedal a bike. We power our devices with energy stored in batteries. Even sleeping requires energy!What is energy? Energy is the ability to do work. There are many different kinds of energy, such as light, sound, and heat. We need energy for our homes to power lights, refrigerators, air conditioners, and computers. We use energy when we drive cars or pedal a bike. We power our devices with energy stored in batteries. Even sleeping requires energy!Energy moves and changes form.
Energy transfer takes place when energy moves from one place to another. Energy can move from one object to another, like when the energy from your moving foot is transferred to a soccer ball, or energy can change from one form to another.
When energy in a battery is used to power an electronic device, chemical energy is transformed into electrical energy, which moves along wires.
Three more ways energy can be transferred are through light, sound, and heat.
Energy moves and changes form. Energy transfer takes place when energy moves from one place to another. Energy can move from one object to another, like when the energy from your moving foot is transferred to a soccer ball, or energy can change from one form to another. When energy in a battery is used to power an electronic device, chemical energy is transformed into electrical energy, which moves along wires. Three more ways energy can be transferred are through light, sound, and heat.Energy can be transferred as light.