what this page is about.

This page/blog is information about heat and things related to it.

Its not in very good order though so dont get confused and or angry.

                        And     you     should    watch     the      video     about       

                   0…………………………!!!!!elmo burning!!!!! …………………………..0

solar radiation

We use energy to do. . .

• We use energy to do work and make all movements. When we eat, our bodies transform the food into energy to do work. When we run or walk or do some work, we ‘burn’ energy in our bodies. Cars, planes, trolleys, boats, and machinery also transform energy into work. Work means moving or lifting something, warming or lighting something. There are many sources of energy that help to run the various machines invented by man.

Why heat transfer is important

Heat transfer is of particular interest to enginerers, who attempt to understand and control the flow of heat through the use of thermal insulation, heat exchangers, and other devices. Heat transfer is typically taught as undergraduate and graduate subjects in both chemical and mechanical engineering curricula

Heat Transfer

• In thermal physics, heat transfer is the passage of thermal energy from a hot to a cold body. When a physical body, e.g. an object or fluid, is at a different temperature than its surroundings or another body, transfer of thermal energy, also known as heat transfer, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one, a result of the second law of thermodynamics. Heat transfer can never be stopped; it can only be slowed down.

Forces. . .

Whenever you push, pull, stretch, squash, bend, twist or tear something you are exerting a force. A force can:

• make something move
• speed something up
• make something stop or slow down
• change the shape of things

• Some forces need to be touching to occur, while others can occur at a distance. eg. gravity

• Forces can be measured using a SPRING BALANCE. The units of force are NEWTONS.

Measuring Energy

Energy is measured in Joules (J). A kJ is one thousand joules, just like a km is a thousand metres.

Balanced VS Unbalanced Forces

If two forces are balanced then the object they are acting on will be either:

• stationary or
• will continue moving at a constant speed.

However, when forces are unbalanced an object will change its:

• increase or decrease it’s speed
• change it’s direction.

Different Types of Energy

Kinetic Energy

• Electrical Energy
• Radiant Energy
• Thermal Energy
• Motion Energy
• Sound

Potential Energy

• Chemical Energy
• Stored Mechanical Energy
• Nuclear Energy
• Gravitational Energy

Tickle Me Elmo

 In this video ‘Elmo’ is the fuel as he is made of flammable material, he is also doused in a flammable liquid which is classed as potential energy. When ‘Tickle-Me Elmo’ is burning he is producing Heat energy and Light energy. ‘Tickle-Me Elmo’ also runs on batteries, which are the source of his movement, this is kinetic energy.