Energy transformations are one of the most important aspects of physics, and transforming to and from kinetic energy is among the most common types of transformations. Such transformations are so common that they're probably happening around you right now. This makes it easy to find examples of kinetic energy transformation, because they abound among natural and man-made items. Show
A Yo-Yo's MovementOne of the best examples of kinetic energy transformation comes in the form of a simple yo-yo. When playing with the device, one begins by letting it rest in his hand. At this point, all of the energy stored in the yo-yo is called potential energy, or stored energy. Once a person drops the yo-yo from his hand, however, the potential energy in the yo-yo is transformed to kinetic energy, which is the energy of movement. Once it reaches the very bottom of the string, all of the yo-yo's energy is kinetic. As it moves back up the string, this kinetic energy is transformed back into potential energy until it reaches the person's hand, where all the energy is once again potential. Riding a Roller CoasterA roller coaster ride, unlike a yo-yo, actually allows a person to feel the tangible effect of energy transfers between potential and kinetic energy. For example, when ascending the first hill of a roller coaster, the train gradually builds potential energy until it reaches the very top. At the very top, riders can feel a tiny moment of stillness, and this moment is the point where the coaster has reached its maximum potential energy, and all of its energy is in this form. Once descending that hill, the coaster's energy is converted to kinetic energy until it is entirely kinetic at the bottom. The process of ascent/descent continues to change between potential and kinetic energy throughout the duration of the ride. A Wind TurbineKinetic energy does not always have to convert back and forth between potential energy. Instead, it can also convert to numerous other forms of energy, including electrical energy. In the case of a wind turbine, for example, initial kinetic energy from the wind is converted through a series of steps into electric energy. The process begins by having the wind's kinetic energy convert to mechanical energy by spinning a wind turbine. The mechanical energy in the wind turbine is then transferred to an electrical generator, where the mechanical energy is transformed into electrical energy. Elastic to KineticElastic energy is another form of energy that is readily transformed to and from kinetic energy. Not surprisingly, elastic energy is typically found in elastic objects such as rubber bands. Initially, a rubber band stores something called elastic energy, which when compressed or stretched can transform into kinetic energy. Pulling back a rubber band builds its elastic energy, and once it's released the band clearly moves -- this is because the elastic energy has been converted to kinetic energy. Because this energy operates in a way similar to potential energy, it is often also called elastic potential energy. References Writer Bio Kevin Wandrei has written extensively on higher education. His work has been published with Kaplan, Textbooks.com, and Shmoop, Inc., among others. He is currently pursuing a Master of Public Administration at Cornell University. Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which then generates an electric current. This electric current, in turn, allows the car to move. electrical, chemical, kinetic Sets found in the same folderRadiant Energy Radio waves transmitted from a tower Kinetic Energy A box moving along a conveyer belt Electrical energy Lightning produced during a storm. Thermal energy Sand on the beach feels warm to the touch Gravitational potential energy A piece of fruit hanging from a tree. What energy transformation is taking place in the photo? chemical energy to thermal energy
What is the original source of energy for gasoline? Sun The process of generating electricity from dams and nuclear power plants is very different, but some of the energy transformations are the same. Which energy transformations occur in both dams and nuclear power plants? Check all that apply. kinetic energy to mechanical energy kinetic energy to mechanical energy Which statement is an example of the law of conservation of energy? A soccer ball eventually stops because its energy disappears. When a light bulb is turned on, electrical energy is converted to light and heat. Visit this website and read about pendulums. Then complete the sentences based on the diagram of the pendulum. Be sure to keep this website open because there will be several questions related to it. The pendulum has the most potential energy: at the top of the swing Go to the roller coaster simulation and click on the "launch" button. Pay attention to the pie chart as the roller coaster moves and fill in the blank. Be sure to keep this website open because there will be several questions related to it. The kinetic energy ________as the roller coaster goes downhill. Click the "step" button on the simulation to observe the energy at different points on the roller coaster ride. Kinetic energy is greatest at_______? Which chart comes closest to the relationship between kinetic energy and potential energy at point 6? increases What is one energy transformation that is taking place in the photo? radiant energy to thermal energy radiant energy to chemical energy What are the two main types of energy? potential and electrical kinetic and potential What is nuclear energy? energy from solar panels energy locked in the nucleus of an atom Identify the form of energy that matches each example. Radiant Energy Identify characteristics of energy from the Sun. Check all that apply. Almost all of the energy on Earth comes from the Sun. Almost all of the energy on Earth comes from the Sun. A number of energy transformations occur when water that is stored behind a dam is changed into electrical energy. For each step listed, identify the energy transformation. Lake water flows downward through tunnels: potential to kinetic
What are the two main types of energy? radiant and chemical kinetic and potential Almost all energy on Earth comes from the: Sun Which activity directly converts energy from the Sun into chemical energy? a snake lying on a sunny
rock to keep warm a bean plant making its own food to grow The image shows a dam. Which descriptions best fit the labels? X: kinetic energy X: potential energy X: mechanical energy X: electrical energy X: potential energy Savion listed the steps involved when nuclear power plants generate electricity. 1. Nuclear reaction occurs. Which best explains how to correct Savion's error? In step 2, change "radiant and thermal " to "chemical and mechanical." Reorder the steps so that step 4 appears before step 3. The human body stores chemical energy from digested food. Some of the chemical energy is converted into mechanical energy when the body moves. Which statement is bestsupported by this information? The body does not convert chemical energy to thermal energy. Digested food is a source of potential energy. Which is an example of transforming potential energy to kinetic energy? Check all that apply. changing thermal energy to electrical energy changing chemical energy to thermal energy When a person strikes and lights a match, potential energy in the match is transformed into which types of energy? electrical and thermal thermal and radiant Plants are responsible for a very important energy transformation, as shown. Which energy transformation does the picture best illustrate? radiant to chemical radiant to chemical Energy can be transformed from one form to another. The diagram shows one such process. Which energy transformation is represented in the diagram? nuclear to thermal and radiant nuclear to thermal and radiant Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate electricity. Which best completes the chart? nuclear energy transformed to electrical energy kinetic energy transformed to mechanical energy Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which then generates an electric current. This electric current, in turn, allows the car to move. Which shows the correct order of energy transformations that take place in a solar-powered car? electrical, chemical,
kinetic radiant, electrical, mechanical Eddie and Val observed the picture of an athlete running in a race. Eddie stated the picture shows potential energy being transformed to kinetic energy. Val stated that it shows chemical energy being transformed to mechanical energy. Which best explains who is correct? Only Eddie is correct because the picture does not show a transformation that starts with chemical energy. Both Eddie and Val are correct because chemical energy is a type of potential energy and mechanical energy includes kinetic energy. During nuclear fission and fusion, matter that seems to disappear is actually converted into: Energy The diagram shows a swinging pendulum. Which best explains what happens to the motion of the pendulum? The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving. Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases. Which best explains Taro's error? The amount of energy that the ball has does not change. The total energy of the system remains the same. What happens in terms of energy when a moving car hits a parked car, causing the parked car to move? The moving car transfers kinetic energy to the parked car. The moving car transfers kinetic energy to the parked car. As a person pushes a box across a floor, the energy from the person's moving arm is transferred to the box, and the box and floor become warm. During this process, energy is: Conserved A battery has chemical energy, which can be used to generate thermal and radiant energy in a lightbulb. Which best explains what happens to the amount of energy in this scenario? The total energy in the system increases because chemical energy creates thermal and radiant energy. The total energy in the system remains the same as the decrease in chemical energy equals the increase in thermal and radiant energy. Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the
hill. The motionless ball does not have energy because it is still. Kinetic energy is not made; it is a result of energy transformation. Kinetic energy is not made; it is a result of energy transformation. The amount of kinetic energy an object has depends on its: Motion This diagram shows a skier moving down a hill. Which statement best describes the skier? The skier has potential and kinetic energy. The skier has potential and kinetic energy. Which set of terms best defines what affects kinetic energy and potential energy, respectively? position, gravity velocity, height Which statement best compares potential and kinetic energy? Objects always have more potential energy than kinetic energy. Only kinetic energy increases when the velocity of an object increases. Seema knows the mass of a basketball. What other information is needed to find the ball's potential energy? the volume and height the ball reaches acceleration due to gravity and the height the ball reaches A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh) 800 kg 800 kg A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. The sled's potential energy is: 882 The table shows information about four objects resting at the top of a hill. Which object is on the tallest hill? W Z Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboard ramp that is 1.5 meters tall. Which conclusion is best supported by the given information? If Tyrone stands at the top of the same ramp, his potential energy will be less than
Ella's. If Tyrone stands at the top of a 2 m high ramp, his potential energy will be greater than Ella's. Which factors are used to calculate the kinetic energy of an object? Check all that apply. gravity velocity The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is 25J A car is moving at 12 m/s and has a mass of 600 kg. What is the kinetic energy of the car?
43,200 J An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? 7.5 kg 15 kg The table shows information about four students who are running around a track. Which statement is supported by the information in the chart? Autumn has more kinetic energy than Chiang. Mohammed has less kinetic energy than Autumn. A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J. What is the mass of the soccer ball? 0.1 kg 0.4 kg The diagram shows a ball resting at the top of a hill. Which statement best describes the energy in this system? The potential energy in the system is greatest at X. The potential energy in the system is greatest at X. This diagram shows a baseball's motion. Which statement is best supported by the diagram? Kinetic energy becomes potential energy between points R and S. Maximum potential energy is at point R. The diagram shows a person holding a bow and arrow. Which will most likely increase the kinetic energy in this system? pulling farther back on the string releasing the string If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result? Total energy increases. Energy of motion decreases. Olivia is on a swing at the playground. At which point is her kinetic energy increasing and her potential energy decreasing? W X Which is occurring when work is being done? Energy is being reverted. Energy is being transferred. Four people make observations recorded in the table. Which best describes what all of the observations have in common? They involve nuclear energy. They involve changes in energy. If Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, ________ is being done. work Shondra takes notes in class. I. Electromagnetic Waves II. The ability to work - Has many forms - Mechanical III. Potential energy - Chemical - Elastic - Gravitational Kinetic energy - Energy of movement - Electrical IV. Nuclear - Radiant - Thermal One line of Shondra's notes is irrelevant to the rest of her notes. Which line is about a different topic than the rest of Shondra's notes? I I Work can_________energy between objects and can cause a change in the form of energy. transfer Abin is doing work by lifting a bowling ball. Which statement could be made about the energy in this situation? It is being transferred from the ball to his arm muscles. It is being transferred from his arm muscles to the ball. Which statement best defines the relationship between work and energy? Work can transfer energy between objects and increase radiant energy. Work can transfer energy between objects and cause a change in the form of energy. Gabriel is performing an experiment in which he is measuring the energy and work being done by a ball rolling down a hill. Which statement best describes Gabriel's measurements? They will remain constant. They will both be recorded in joules. When a spring is compressed, the energy changes from kinetic to potential. Which bestdescribes what is causing this change? work _______energy is the energy an object has because of its motion. Kinetic Which statement best describes the work and energy in these examples? Example 1: Running a car requires gas. The gas and food are examples of energy. The gas and food are examples of energy. What is the energy of an object because of its potential and kinetic energies? chemical energy mechanical energy What are two types of mechanical energy? electrical and kinetic elastic and gravitational
What kind of energy involves the flow of positive charges? thermal electrical Johanna is studying what happens to the energy as a ball rolls down a ramp. What is she studying? Check all that apply. gravitational potential energy gravitational
potential energy Atoms contain subatomic particles called protons and neutrons. When these protons and neutrons split, a lot of energy is released. What kind of energy is this? nuclear nuclear The sun emits electromagnetic waves at many frequencies, but mostly in the infrared, visible, and ultraviolet spectrums. What kind of energy is this? nuclear radiant When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this? nuclear thermal When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released. Which identifies the energy transformations that take place in Anna's body as this process takes place? Mechanical energy is converted to kinetic energy, which is then
converted to potential energy. Chemical energy is converted to thermal energy and electrical energy. What changes an example of transforming potential energy to kinetic energy?First, the raised hammer has more potential energy since it has the potential to go higher or lower. Second, when you hit the hammer on the table, the stored potential energy is converted to kinetic energy as the hammer is falling. (It's the falling hammer that has kinetic energy.)
What converts potential energy into kinetic energy?An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).
Which is the best example of energy transformation between potential energy and kinetic energy?In waterfalls such as Niagara Falls, potential energy is transformed to kinetic energy. The water at the top of the falls has gravitational potential energy. As the water plunges, its velocity increases. Its potential energy becomes kinetic energy.
Which of the following is an example of the conversion of potential energy into kinetic energy quizlet?A waterfall is an example of: potential energy being converted into kinetic energy.
|
Which change is an example of transforming potential energy to kinetic energy?
Postagens relacionadas
direito autoral © 2024 cumeu Inc.
