Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Law of conservation of Energy
1
Conservation of Energy
Done by: Lina, Sara, Maya and Nicole
Describe the energy changes of an object and how it works
The law of conservation of energy states that energy -- the abili...
The law of conservation of energy states that energy -- the ability to do work -- can't be created or destroyed. Energy can, however, change forms. For instance, from potential to kinetic and vice versa.
If you apply a force to an object, you may change its energy. That energy must be used to do work, or accelerate an object. Energy is called a scalar; there is no direction to energy (as opposed to vectors).
If you apply a force to an object, you may change its energy. That ener...
- Energy is not something you can hold or touch. It is ju...
- Energy is not something you can hold or touch. It is just another means of helping us understand the world around us. Scientists measure energy in units called joules.
Describe what is meant by conservation of energy
Describe what is meant by conservation of energy
The law
The law
The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
Continuation
Continuation
- So basically, the total amount of energy before and after a change is the same.
- This means that the variable in an equation which represents a conserved quantity is constant over time. It has the same value both before and after an event.
Summary
- Energy of the universe remains constant, it can't be created nor destroyed, but it can be transformed from one form to another.
- x+y=z 9 (If you move any of the variables they'll still have the same amount).
Explain why conservation of energy is a very important idea
Why is energy conservation important?
1. Reduces Carbon Emissions
2. Improves Air Quality
3. Saves Money on Energy Bills
4. Prolongs Non-Renewable Energy Reserves
- Saving energy is important because energy use affects t...
- Saving energy is important because energy use affects the environment and everyone in it. Secondly, when you conserve energy you also save on the cost of living. Such as water, wind, and solar. Nonrenewable energy sources, on the other hand, like gas, coal, and oil, cannot be replaced.
Apply conservation of energy to examples
Apply conservation of energy to examples
Example 1
- Water can produce electricity. Water falls from the sky, converting potential energy to kinetic energy. This energy is then used to rotate the turbine of a generator to produce electricity. In this process, the potential energy of water in a dam can be turned into kinetic energy which can then become electric energy.
Examples 2+3
- Using newton's cradle the energy of the ball is potential but when it is hit it becomes kinetic.
- When we use the brakes to stop a car, that kinetic energy is converted by friction back to heat, or thermal energy.
Example 4
- When a roller coaster is going up, it has gravitational potential energy, and when it goes down it becomes kinetic, sound and thermal.
- How? G.P.E is present because as it ascends it is potential (the small stop)
- Kinetic Energy is present because as it descends it is in motion.
- Sound Energy is present because of the sound the track makes while descending.
- Thermal Energy is present because of the friction between the track and the wheels.
Example 5 (The Pendulum)
- A pendulum is a string that has an object attached to the end of it, and the main idea of this example is that we are going to see how the pendulum's energy changes from gravitational potential to kinetic and back to gravitational potential.