Physics : Physical Science ( 2015-16 )

Energy can be transformed but cannot be got rid of. There are lots of forms of energy but chemical energy is the most common form of energy. Energy is a chemical bond that combines atoms or molecules with each other. When the new bond is formed between to atoms the energy helps the formation. The energy that helps is normally heat energy but can also be light or electrical. When the bond is broken atoms get realised as does the energy in the bond.

Energy is the strength and ability that is required in order to perform physical or mental activities. There are different forms of energy these consist of: magnetic, kinetic, heat, light, gravitational, chemical, sound, electrical, elastic and nuclear.

605). Energy cannot be created or destroyed; it only changes form. There are several sources of heat. These sources are chemical, mechanical, electrical, and nuclear.

2. Why did Dr. Solomon say that novel ideas in science always challenge the current paradigms? Isn't science supposed to be about new ideas? Try to justify what he meant by his statement.

Kinetic energy is the energy an object possesses due to its motion. The difference between kinetic energy and potential energy is the kinetic energy is the energy of an object that is already in

I watt-I joule/sec. most useful kinds of energy=chemical and potential. One calor is the enrgy it takes to raise one kg of water by one degree Celsius. 4k joules=calories. Solar cells- crystals that convert sunlight directly into electricity. K energy depends on sq of v. double speed=kinetic energy increased by factor of 4.. temp is a measure of hidden kinetic energy.

Energy is a concept.� Most definitions of the word energy fail to provide its exact meaning when applied to scientific matters.� In science the word energy is a concept that expresses two measurable properties, heat and work.� Here is the relationship of energy, heat and work:

The relationship between work and potential energy is that the work done by a force on an object to move it from point A to point B is opposite to the change in potential energy:

1) What is kinetic energy, and how does it differ from potential energy? Kinetic energy is due to motion, while potential energy is due to position

Another example of converted energy we can find in our movement. For this to happen we need the chemical energy first, which makes the electrical energy. This is converted to electrical energy for the nerve production, which goes back to chemical energy for the muscle contraction. At the end, the thermal energy which has the waste energy is converted to kinetic energy which produces the movement.

So the higher the ruler is the more potential energy it would be. As the marble rolled down the ruler, its kinetic energy (553334.91 J) was also increasing. The reason is because velocity and mass are part of what makes kinetic Energy. The faster the speed and the heavier mass caused more kinetic energy to be present. The potential energy of the marble when it was on the ramp was converted to kinetic energy as it rolled down.

When looking at all the different theories they all have something common. They are just a theory. What I mean by this is they are a thought or suggestion of how things happen or work. The reality is some theories are good and plausible. Others on the other hand not so much. All of Chapter 4 is all about the different theories. So this paper is a summary of some of those theories.

What is energy? Energy is the ability to do work, it is the “power that comes from the use of physical or chemical resources.” In your home energy can come in many forms such as heat, light, and even electricity. The problem is some of us, meaning people, in general, know little to anything about the word energy itself. When we think about energy, we think about the energy it takes to get up in the morning. Sometimes as students we do not notice how much, and when we use energy. We use energy in everyday life, and it is very important to understand that.

Conservation of energy is...TE = PE + KE + WE; where total energy is made up of potential energy, kinetic energy, and work energy. Your total energy is conserved while walking. The potential energy is the biochemical potential of your muscles and frame, which is converted by work into kinetic energy, which is the walking part.

Energy is a crucial necessity and with the ever increasing need for it and the high and fluctuating prices of oil, researchers are constantly coming up with newer and more sophisticated alternative sources of energy. However, energy comes at a cost, as it is either expensive or it possesses high health risks. This essay presents the concept of energy by discussing the two major types of energy, the various forms it could take, including renewable sources of energy, energy conservation and above all it talks about the safest and cleanest alternatives.