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Heat and Temperature

Introduction

Hello, this presentation is going to be about the concepts of heat and temperature. It will include the following:

• What kinetic energy and potential energy is.
• Physical arrangements in solids, liquids and gases.
• The difference between heat and temperature.
• What the different forms of heat transfer are. ( this will also include examples so that it will be easier to understand)
• How all of these concepts are connected.
• Sources
• Conclusion

What is kinetic energy and potential energy? What is the difference between the two?

Kinetic energy is energy that an object possesses due to its motion.

Potential energy is energy that is stored so it is not used yet.

The difference between Kinetic energy and Potential energy is that Potential energy is energy that has not been used yet but kinetic energy is already being used.

Kinetic and Potential energy are connected to heat and temperature because temperature measures the speed of the kinetic and potential energy, heat is connected to kinetic and potential energy because heat is the total amount of kinetic and potential energy. This is connected to solids, liquids and gases because solids, liquids and gases all have kinetic and potential energy. This is connected to conduction, convection and radiation because conduction, convection and radiation can be transferred with kinetic and potential energy.

The physical arrangements of solids, liquids and gases

Solids, Liquids and Gases are all made up of atoms and molecules.

In a Solid, the atoms and molecules are packed together, they are all touching. Solids can be big, small, soft or hard. It would just depend on if the object can keep its shape, if it can then the object is a solid because solids always keep their shape but if it does not keep its shape then it is not a solid. Examples of solids: wood, plastic, metal and rubber.

In a Liquid, the atoms and molecules mainly are touching but there are also some gaps in the structure, this allows the atoms and molecules to move around. Liquids also take the shape of their container. Examples of liquids: water, oil and juice.

In a Gas, the atoms and molecules are free to move anywhere because they are not touching and they also have plenty of space to move. Examples of gas: oxygen, carbon dioxide and carbon monoxide.

This is connected to kinetic and potential energy because solids, liquids and gases have kinetic and potential energy. Heat is connected to this because heat can be transferred between solids, liquids and gases. This is related to conduction, convection and radiation because conduction happens in solids and convection happens in liquids and gases.

What is the difference between heat and temperature?

The difference between heat and temperature is that temperature is a measure related to how fast the molecules in a substance is moving. It is also a measure of how or cold something is. Heat is thermal energy that can pass through one hot object to a cool object.

This is related to kinetic and potential energy because heat is the total amount of potential and kinetic energy and temperature is the measure of the speed of molecules in a substance. This is also connected to solids, liquids and gases because heat can be transferred between them. This is connected to conduction, convection and radiation because they are all heat transfer.

What are the different forms of heat transfer? How many are they? How do they transfer heat?

There are three different forms of heat transfer, they are called conduction, convection and radiation.

Conduction is heat energy that transfers from one object to another with solids. There are conductors and poor conductors (insulators). Poor conductors are conductors but they cannot conduct as fast as a conductor can. Examples of conduction: touching a stove and getting burned. (Heat energy travels from the stove to the persons hand.) Ice melting in your hand. (Heat travels from your hand to the ice cube.)

Convection is when heat transfers from one object to another with liquids and gases (fluids.) Convection can happen by mass motion of the fluid or by when the fluid is heated; which would cause it to move away from the source of heat. Examples of convection: a hot air balloon (hot air from the bunsen burner rises to the ballon). Water boiling (heat transfers from the hot water to a gas called vapor and goes up)

Radiation is heat transfer with heat waves. This would happen when heat waves from the source move to somewhere else. Example of radiation: heat from a fire warming my hands (heat transfers from the fire to my hands). Heat from the sun (heat transfers from the sun to earth). Heat from the radiator (heat transfers from the radiator to the room).

Heat is connected to conduction, convection and radiation because all three of them are heat transfer. Kinetic energy and potential energy is related to this because kinetic or potential energy can be used to transfer heat. Solids, liquids and gases are connected to this because conduction, convection and radiation can happen through through solids, liquids and gases.

Sources

• Science textbook