One day, Don is taking a hike through a trail.
Since Don is moving by walking, he has mechanical energy – the energy an object has due to its motion or position. Mechanical energy is everywhere in the world – without it, very little would happen; for example, any moving thing from the ticking hand of a clock to the rotation of the planet has mechanical energy because it is in motion.
The sound of laughter from the camp is an example of sound energy, energy that comes from the vibration of particles and travels through a medium, creating a sound wave. In this case, the children laughing cause particles in the air to vibrate back and forth and then collide with nearby particles, making the sound wave travel all the way to Don’s ears. Sound energy enables us to hear each other (the foundation of most human languages) and communicate effectively, which has played a huge role in the advancement of the human species and allowed us to get to where we are today.
Elastic energy is stored in a stretched or compressed object until whatever force stretching or compressing it is removed and the object springs back to its original shape. When a bow is drawn, it is stretched and has elastic energy until the arrow is released and the bow returns to its original shape. Elastic energy plays a particularly important role in the lives of athletes, as many sports like basketball rely on elastic energy to help a ball to bounce or rebound. Also, when they train and do muscle contraction exercises, elastic energy is stored because the muscle is compressed – this applies to the wider population as well, in the daily movements we do.
Donlooksdownandseesthatan arrowhassproutedfromhis chest!
Acampertriestopullthe arrowoutofDon,butthe arrowheadsnapsoffandis stuckinhischest.
X-rays are a form of electromagnetic radiation, and thus a type of radiant energy – the energy of electromagnetic waves that travel out from an energy source (which would be the X-ray machine in this case). The visible light waves that allow us to see, the RF waves that power our phones, and the gamma rays that save lives through chemotherapy are all examples of how essential and prevalent radiant energy is in our lives.
Unfortunately,thedoctor saysremovingitsafely wouldbeimpossibleandDon onlyhas5daystolive.
Instant cold packs have chemical energy – energy stored in chemical bonds that is released when a chemical reaction occurs. Cold packs have 2 separate layers, a layer of water and a layer of a chemical or mixture of chemicals that result in an endothermic reaction when dissolved in water. When the cold pack is squeezed, the energy stored in the chemicals is released as the endothermic reaction occurs, decreasing the temperature and making the cold pack “instantly” cold. All chemical reactions involve chemical energy, and chemical reactions play a huge part in our lives. For example, chemical reactions are responsible for turning the food we eat into fuel for our bodies to keep us alive. Also, almost all of the substances we encounter in life are produced through chemical reactions.
Thermal energy is the energy of the random motion and vibration of particles contained within a substance that is responsible for its temperature; because Don has a fever, the particles in his body are moving relatively faster and thus both his thermal energy and body temperature are higher. Since heat is thermal energy that’s transferred from one object to another, thermal energy helps keep us alive – heat is a major part of endothermic and exothermic reactions like photosynthesis and cellular respiration, which we rely on for all foods (since plants are the basis of food chains) and keeps our cells functioning, respectively.
Inhisfeverishstate,anideasparks inDon’shead.Duetoitbeingsuch
aniceandsunnyday,heshoulddo onelastawesomethingbeforehe dies...
Nuclear energy is energy stored in the nucleus of an atom. When hydrogen atoms in the sun fuse together to form helium, the 2 nuclei of the hydrogen atoms combine to form a single nuclei (of the helium atom) and nuclear energy is produced - this is what powers our sun and other stars. In addition to powering the source of heat and light that allows life to exist on Earth, nuclear energy can also be used to produce massive amounts of carbon-free electricity, providing about 10% of global electricity generation.
When Don is standing at the top of the cliff, he has gravitational energyenergy an object has stored due to its higher position relative to a lower point in a gravitational field. Don has gravitational energy when he is standing above the ocean because the energy associated with gravity is released when he jumps off the cliff and falls toward the water.
Gravitational energy is responsible for a lot of things we take for granted as well – water flowing out from a tap, going down a slide at the playground, landing back down on Earth after we jump, and so much more.
Underthebrightbluewaters,he meets...a electric eel!! sparkly purple
He gets closer and then...
Electrical energy results from the movement of charged particles, like electrons, and electric eels can generate it. These eels have electrocytes (specialized electric organs) that allow them to discharge electricity from their bodies, which involves the most d into nical),
Suddenlythepaininhischest disappearsandDonknowsthat he’sbeen healed!! magically Woah!You’remagic, thankyou!
Magnetic fields are generated by electric currents, so electric charges in motion are what produce the energy that’s associated with magnetic fields – magnetic energy. Magnetized coils run along the track of Maglev trains and the trains themselves have large magnets on their undercarriages. The coils and magnets repel each other, causing the train to levitate, and electric currents supplied to the coils constantly alternate. This results in changes in polarity that cause the magnetic field in front of the train to pull it forward and the magnetic field behind it to push it forward, resulting in a very fast-moving train. Magnetic energy is key to generating electricity because many generators rely on moving magnets (magnetic fields) around coils of wire, or vice versa, to push around electrons in the coils and create an electrical current.
Donisveryexcitedforhissecondchanceat lifeandspeedshomeonaMaglevtrainto startachievinghisgoalsrightaway.