1. Energy Transformations
#energy #transformation #science #ngscience
In what ways can energy be converted from one form to another? Let's take a look.
Head to NGScience for related worksheets and other resources on energy for use in the classroom and at home.
Energy is all around us. We can't see energy, but we can see the things that energy does. Energy makes things move. It powers the machines we use. It can make things get hotter or produce sound. Energy is used to light up our homes and cities and power the vehicles we use. Plants and other organisms need energy to live, grow and carry out life processes.
Energy cannot be created...nor can it be destroyed. But it can be changed ... or transformed... from one form to another and we can observe this happening around us every day.
Let's take a look at some examples. As each video plays, write down the energy transformations you think are taking place. We'll go through each example at the end so you can check your answers. Let's go.
1. What energy transformation takes place when a ukulele is strummed?
2. What energy transformation takes place when a light bulb is switched on?
3. What transformation takes place when a match is struck?
4. What transformation takes place when a drawn bow and arrow is released?
5. What transformation takes place when an electric kettle is switched on?
6. What energy transformation takes place when a roller coaster rolls down the track?
7. What transformation takes place when an electric doorbell is pressed?
8. What energy transformation takes place when drill is used to secure a screw into wood?
How'd you go...let's take another look.
When a ukulele is strummed, kinetic energy is transformed into sound energy.
When a light bulb is switched on, electrical energy is transformed into light and heat.
When a match is struck, kinetic energy and chemical energy is transformed into light and heat.
Ehen a drawn bow and arrow is released elastic potential energy is converted into electrical energy.
When an electric kettle is switched on, electrical energy is transformed into heat.
When a roller coaster rolls down the track, gravitational potential energy is transformed into kinetic energy.
When an electric doorbell is pressed electrical energy in transformed into kinetic energy and sound.
When drill is used to secure a screw into wood, electrical energy is transformed into kinetic energy.
Take note that in many of the examples provided, heat and sound are also often produced.
2. ENERGY TRANSFORMATIONS
Energy is the ability to do work. Energy can't be either created or destroyed, it just change from one form into another form. This change is called Energy Transformation.
*sorry there's a mistake (typo) in the video. Energy can't either be created nor destroyed but only change from ONE form into another form.
7 Micah (2016/2017)
Anastasia S. S. /3
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3. Energy is always changing: types of energy transfers | MightyOwl Science | 4th Grade
For the full MightyOwl learning experience, check out more activities, worksheets and quizzes on our website:
What does it mean for #energy to be transferred? How does energy go from the sun to powering a house? We answer these questions and many more in this video, join us as we explore how energy is transferred in different ways and how we use that energy in our everyday lives. See you in the video mighty scientists!
Key words: energy, #EnergyTransfer, #SolarEnergy, #SolarCell, #WindTurbine, motion energy
Aligned with Next Generation Science Standards
4-PS3-2: Make observations to provide evidence that energy can be transferred from place to place by sound, light, heat, and electric currents.
4. Energy Stores and Transfers
This video is about energy stores and energy transfers and is for Key Stage 3 pupils (pupils in Years 7 and 8). It includes information on the energy stores, including: thermal, gravitational potential, elastic potential, kinetic and chemical energy.
5. Energy Transfer
Explore how energy is transferred on Earth through conduction, convection and radiation.
6. Energy Transformations
7. TYPES OF ENERGY | Physics Animation
Hello, Learners! This is EarthPen. Today, we are going to talk about another fun topic in Physics. It is all about the types of energy.
Energy can be categorized into two broad topics; kinetic energy and potential energy. These two are the basic forms of energy. And we know that kinetic energy is the energy of moving objects while potential energy is energy that is stored. But aside from these two energies, there are also other types of energy. This includes thermal energy, radiant energy, light energy, chemical energy, nuclear energy, electrical energy, gravitational energy, and mechanical energy.
Let us discuss them one by one.
The first type of energy that we’re going to discuss is thermal energy. Thermal energy or also called heat energy is produced when there is a rise in temperature that causes atoms and molecules to move faster and collide with each other.
But how is thermal energy produced? Thermal energy is the energy that comes from the heated up substance which means that the hotter the substance, the more its particles move, and the higher its thermal energy.
To better understand this, let us have an example. Say you have a hot pot. You forgot that the pot is hot so you grabbed it with your hand. Now, your hand is burnt because of the hot pot. The thermal energy from the hot pot is being transferred to your hand that is why you felt the burn in your hands. So, better be careful when dealing with hot things.
The next type of energy that we’re going to discuss is radiant energy.
What is radiant energy? Radiant energy is a form of electromagnetic energy. This type of energy can take the form of visible waves, which is what we call light energy. But we’ll be talking about light energy later.
The sun produces a lot of radiant energy which is transmitted to Earth as light. Radiant energy that is transmitted by electromagnetic waves can come in different forms. Some examples of radiant energy are from the sunshine, x-rays, and radiant heating systems.
Watch the video to find out more.
#TypesOfEnergy #Physics #EducationalVideo
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8. Heat Transfer – Conduction, Convection and Radiation
#heat #energy #conduction #ngscience
Observe and learn about the different ways in which heat moves. Get too ngscience.com for a range of related learning and teaching resources for use in the classroom and at home.
What Is Thermal Energy?
All matter is made up of tiny particles. Whether matter is in a solid, liquid or gas, these particles are always in motion. How much these particles move is called thermal energy.
The more thermal energy matter has, the higher its temperature. Temperature is how hot or cold matter is. It is a measure of the average kinetic energy of the particles in matter. The faster the particles mover, the greater the temperature.
When matter gains thermal energy, the particles that make up the matter move faster. Its thermal energy increases and its temperature also increases. When matter loses thermal energy, the particles that make up the matter move slower. Its thermal energy decreases and its temperature decreases.
So how does matter gain thermal energy? The movement of thermal energy is called heat. Heat occurs whenever there is difference in temperature.
Let’s look at an example of the heat that occurs when a hot object comes in contact with a cold object. In both objects, the particles are moving – they have kinetic energy. When the objects are touching, their particles collide with each other. As they collide, the hot object passes energy to the cold object. The hot object gets cooler and the cold object gets warmer. Heat will continue to move in this way until the temperature of both objects is equal.
When you place a cold metal spoon into a hot cup of tea, energy moves from the hot tea to the spoon. The tea loses thermal energy and gets cooler. The spoon gains thermal energy and gets hotter. The metal spoon will continue to gain thermal energy from the hot tea until the temperature of the tea and the spoon are equal.
Just as heat moves from hot to cold between objects, it also moves in this way within objects. Let’s look at an example of placing a metal rod over a fire. The heat from the fire will cause the particles at the tip of the rod to gain thermal energy and its temperature increases. These particles then collide with the particles adjacent to them. In this way, heat in transferred from the hot region to the cold region of the metal rod.
Thermal energy moves in three main ways – conduction, convection and radiation.
Think again how heat moved in the metal rod placed on a fire. The thermal energy moved from the hot part of the rod to the cooler part of the rod. This movement of heat within an object is called conduction. Conduction also occurs when objects are touching. If you were to hold the cool end of the rod, before too long it would feel warm as thermal energy moves by conduction to your hand.
Heat transfer from a hot cup to your hands and cooking a piece of fish in a pan are also examples of conduction.
Liquids and gases are similar in that they have no fixed shape. They are fluids. Thermal energy can be transferred from one region of a fluid to another due to movements within the fluid. This movement of thermal energy, called convection, is caused by hot parts of the fluid rising and the cooler parts of the fluid sinking.
Think about the water in a kettle as it is heated. The water touching the heating element is heated by conduction. The water becomes warm and rises. As it does so, the cooler water sinks and a current is created within the water. The current causes the thermal energy to spread through the water in the kettle.
The heating of air in a hot air balloon is also an example of convection.
For thermal energy to move by conduction and convection it must travel through matter. Between the Sun and the Earth is empty space. How does the heat from the Sun warm the Earth and other planets in the solar system? The answer is radiation. Radiation is the transfer of energy through electromagnetic waves.
The warmth you feel when you place your hand near an electric heater or a campfire are examples of heat in the form of radiation.
9. Sources of Heat
#ngscience #heat #energy #@ngscience
What is a source of heat? How do we use sources of heat during the dy and around the home?
Applies to the Grade 1 and Grade 2 Next Generation Science Standards (NGSS).
Visit ngscience.com for free worksheets and interactive content relating to this topic.
Take two cups and fill them with tap water. Place one cup in a refrigerator and the other in a sunny place outside. In one hour, use your sense of touch to observe the water in each cup. What do you feel?
Heat is a form of energy that makes things feel warm. The tap water in each cup contained heat energy and felt warm. When you placed one cup in the refrigerator, it lost heat energy and felt colder. When you placed the other cup in the sun, it gained heat energy and felt warmer.
A source of heat is something that produces heat.
On Earth, the sun is our main and most important source of heat. The heat from the sun warms our whole planet and all of the living and
non-living things on it.
If there was no heat from the sun, there would be no life on Earth.
There are many other sources of heat. Burning wood, gas and oil are sources of heat. When these things burn, they produce heat.
Many appliances and devices in our homes are sources of heat too.
Ovens, kettles and toasters are sources of heat.
Clothes dryers, irons and hair
dryers are sources of heat too.
What are some other sources of heat?
How is heat used by people?
What is the source of heat?
10. PHYSICS: ENERGY TRANSFORMATION [ AboodyTV ]
Energy is an essential thing in our life, without energy nothing can happen. In this video, I will explain to you what the different types of energy are and how energy is used and transformed.
❤️️ I want to give a special thanks to my physics teacher for checking that all the information in this video is correct.
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11. Different modes of Heat Transfer | Conduction, Convection, Radiation
When you keep a metal plate near a burning wood, it becomes hot because of heat transfer. In this video, we will learn about different ways in which transfer of heat can take place.
Heat can be transferred from one object to other by conduction, or convection, or radiation.
When heat from one object gets transferred to other object by direct contact, it is known as conduction.
For example, when we make tea, heat from stove gets transferred to steel pan because of direct contact. and thus this is conduction.
When you iron your clothes, heat energy gets conducted from iron to clothes.
In convection method, movement of particles of liquid or gas cause transfer of heat from heat source.
Let's take an example of pot of water. As we heat it, water particles near the heat source gets heated first. We know that addition of heat causes increase in movement of particles thus these particles move randomly and a relatively empty space is formed. To fill this space, particles from far areas move here. Again these particles acquire heat energy and move away. This process goes on and whole water becomes hot.
In conduction and convection, there is a medium in which heat gets transferred. But there is no medium between sun and earth, still we get heat from it. This mode of heat transfer is called radiation. You must have seen people sitting around the fire, here too, heat is transferred in the form of radiation. In fact every hot body radiates heat and becomes cold.
Let's take an example of boiling water on a stove. From stove, heat conducts to pot as it is directly in contact. Due to convection, all the water particles receive heat. If you bring your hand very close to side of the pot, you will feel little hotness, this is because radiates coming from pot.
12. How does energy from Sun get transferred / distributed to all the living organisms
13. Energy Transformations | Physics
This video is about Energy Transformation in Physics.
Q: What is Energy transformations?
Ans: Energy transformation means the changing of energy from one form to another form. One can say that energy is changed or transformed from one form to another form, this form changing phenomenon is known as energy transformation.
For example, when you eat food or fruits, you get energy. The food or fruits contain chemical energy, when you digest this food or fruits, you convert the chemical energy int he food into the useful forms of energy like kinetics energy, potential energy, sound energy and heat energy.
Similarly, when you put fuel in the car, the chemical energy of the fuel is converted into kinetic energy by the car.
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14. Energy transfer in food chains
Learn how energy is passed through the food chain, all the way from the sun via producers to consumers.
Part of our unit on Ecosystems: stileapp.com/au/library/publishers/stile/compilations/science/5b9ed449-795a-452c-a12a-63f055791341
15. Heat Transfer - Conduction - Burning Balloons
What happens when you put a flame to an inflated balloon? What about a water-balloon? Watch and see!