Energy is the ability to do work. Work is the product of force and distance. Energy is used every day and everywhere. The nuclear reactions in the sun releases heat light and other electromagnetic energy. Corn uses that energy to grow. The corn stores chemical metabolic energy. When the chicken eats the corn it stores energy in itself. When we chicken we store energy inside of us. Then we use metabolic energy and turn it into mechanical energy by pedaling a bike up a hill. The pedaling of the bike turns into kinetic energy. Kinetic energy is the energy of motion. When the bike reaches the top of the hill even if it is stopped it still has potential energy. Potential energy is energy that is stored as a result of position or shape. When you start going back down the hill potential energy is turned back into kinetic energy. The objects gravitational potential energy depends on its mass, its height and the acceleration due to gravity. The potential energy of an item that is stretched or compressed is known as elastic potential energy. This can be demonstrated by stretching a rubber band and letting go, and having it fly across the room. The elastic potential energy is turned into kinetic energy. The major forms of energy are mechanical energy, thermal energy, chemical energy, electrical energy, electromagnetic energy, and nuclear energy. Mechanical energy is the energy that has to do with the movement and position of everyday objects. Mechanical energy is the sum of potential energy and kinetic energy. A running athlete has mechanical energy. Thermal energy is the total potential and kinetic energy of atoms moving. The faster the atoms move the more thermal energy, and the warmer it gets. Energy stored in the chemical bonds of compounds is chemical energy. Chemical energy is burned to turn into other types of energy. Anything using electricity is electrical energy. Lightning is a form of electrical energy. Electromagnetic energy travels through space in the form of waves. The energy stored in atomic nuclei is nuclear energy. Nuclear power plants use nuclear fission to generate energy. Energy conversion is the transfer of one form of energy to another. Also, the law of conservation of energy states that energy cannot be created or destroyed. If you have a basketball and hold it above your head it has potential energy, as you drop the ball it is converted to kinetic energy when it hits the ground the elastic potential energy stored in the basketball causes it to spring back up. As friction and air resistance stop the ball from bouncing, the energy is converted into thermal energy. Energy was never destroyed it was simply transferred from one type to another. Mechanical energy is kinetic energy plus potential energy. A running athlete has mechanical energy. Some energy sources are renewable, they can be easily replaced. However, oil, natural gas, coal, petroleum, and uranium are non renewable energy sources. That means, that once they are all used up it could take up to a million years to replace. Most nonrenewable energy resources are fossil fuels. Fossil fuels are made from decomposing dead organisms. Oil is burned to help run motors. Natural gas is used for heating houses, transportation and generating electricity. Coal is mainly used for producing electricity, but it also causes a lot of pollution to the
6 – Energy
Section 1 Energy Changes
A. ENERGY – ability to cause change
B. ENERGY TRANSFORMATION – energy changes from one form to another without any being lost or gained
C. Energy due to motion is KINETIC ENERGY.
1. An object’s kinetic energy depends on its SPEED and MASS.
2. When objects collide, kinetic energy can be transferred.
D. POTENTIAL ENERGY – stored energy due to an object’s position
E. Potential energy can be transformed to kinetic energy and kinetic energy can…
Kinetic Theory day 1 Make a copy of these notes for yourselves so that you
can type directly on it :) There are also a lot of videos and and the class notes in
Moodle Day 1 of the unit.
There are some key concepts and vocab that we need to understand in this unit. Let’s start
with defining a few things:
this web site
to learn about the difference between heat and temperature and
to learn about kinetic and potential energy.
After watching and reading the above material…
Kinetic & Potential Energy Roller Coaster Lab Report
Madeline Ware p5 Nov. 20, 2013
Starting with this lab we constructed a ramp or a 'roller coaster' that would be able to let our marble go from the top of the table, down to the floor. The purpose of this study was to be able to find the kinetic and potential energy of a marble going through a twisted ramp through finding weight, height, time, and velocity. The original question was asking to find ot the kinetic and potential…
Heat and Energy
February 7, 2013
The purpose of this paper is to discuss how the study of heat relates to the kinetic energy theory of matter. I will discuss what heat and temperature are, the relationship between them and their differences. I will provide examples of the various properties of a substance that will determine its heat capacity and various sources of heat.
In the 1840s scientists understood that heat was not just a substance but a form of energy that…
Experimentally determining the melting and freezing point of paradichlorobenzene
Experimentally determining the melting and freezing point of paradichlorobenzene by heating and cooling experiment. Data was gathered from the experiments and made into a graph. In this report sections of the graph will be discussed as to their heat lost and gained and phase changes.
Sample in test tube with thermometer
Hi you guys, as you guys know, I’m Jacob and this project is about the Kinetic Energy of a bullet of a rifle.
The Kinetic Energy’s measurement, Joule is a derived unit of the SI Units (International System Units)
The Formula is = 1 kg·m2/s2
So, a normal rifle’s for a 7.62 × 39 mm rifle would be a Winchester Improved, a bullet that is regularly used for hunting and in the formula, 1kg would be the force which it would travel. So, m2 is the meter squared the speed it would travel by…
often the molecules and atoms move and collide determine the temperature also determining the state of matter and the kinetic energy. The faster they are moving the higher the object’s temperature, the higher the kinetic energy. Kinetic energy is simply the fact that a moving object can do work on anything it comes in contact with.
The formula to find the average kinetic energy at a given temperature is
There are three phases of matter known as solids, liquids, and gases. The determining…
Date of Experiment handed in: ____________________
In this laboratory activity we study elastic and inelastic collisions in one dimension and verify the principles of conservation of linear momentum and conservation of energy in an elastic collision in one dimension. We also verify the principle of conservation of linear momentum in explosions and in an inelastic collision in one dimension.
The momentum p of an object is the product of its mass and its velocity:…
increase in temperature affect kinetic energy and enzyme activity?
1. An increase in temperature will lead to more energetic collisions.
When molecules collide, kinetic energy is converted into chemical potential energy. If the chemical potential energy of the molecule is great enough, the activation energy will be achieved and a change in chemical sate will occur. As temperature is increased, it is possible for more molecules per unit time to reach activation energy. This will allow the rate of reaction…
Once ive chosen a factor to
investigate i will perform an experiment where i can look into it and then i
will conclude my results.
How are craters formed?
Craters are formed when a large amount of energy is produced when an
object travelling of a high speed hits a surface.This is called kinetic
energy. When objects pass through the atmosphere, a fastmoving
meteoroid compresses the air in front of it, heating up both the air and the
meteoroid. This heat vaporizes small impactors before they reach the…