Heat and Materials in Physical Science

Heat Transfer in Solid Material

Steve John Mart M. Jose

Teacher III​

Most Essential Learning Competency (MELC):

Describe how light, sound and heat travel.

S4FE-IIIf-g-4, Week 4

Multiple Choice

What is the direction of heat transfer?

• from bottom to top

• C. from hot to cold

• from cold to hot

• from side to side

Multiple Choice

How is heat transferred in solid materials?

• through conduction

• through radiation

• through vacuum

• through convection

Multiple Choice

What happens to a liquid when heated?

• It increases in temperature

• It increases in volume

• It increases in water level

• through vacuum

Multiple Choice

What may happen to a solid when it is continuously exposed to heat?

• It may become heavier.

• It may decrease in volume.

• It may expand.

• It may melt.

Multiple Choice

When heat is transferred through gases it is called___.

• conduction

• convection

• Radiation

• roasting

HEAT TRANSFER IN SOLID MATERIALS

Direction: Write down your answer in a sheet of paper. Take a photo together with your summative assessment.​

HEAT TRANSFER IN SOLID MATERIALS

Direction: Write down your answer in a sheet of paper. Take a photo together with your summative assessment.​

1. ​What are the things that found in the picture?

2. In what kind of weather do we use these objects?

3. In what way do these objects could protect us from exposure to excessive light?​

HEAT TRANSFER IN SOLID MATERIALS

Heat is a form of energy that can be transferred from one object to another with different temperatures. Heat flows from the hotter body to the colder. There are three types of heat transfer, conduction, convection and radiation.

The transfer of heat through solid materials is called conduction. Conduction is the heat transfer from a substance to another by contact. Heat travels in air and water by convection. When liquid or gas is heated, the molecules of the heated part move faster and away from each other. Warm liquid rises and cold liquid sinks. This movement continues until the liquid is evenly heated.

Heat can also be transmitted across empty space or vacuum. This is called radiation.

HEAT TRANSFER IN SOLID MATERIALS

Conduction is the transfer of heat through solid materials. There are materials that allow heat to flow through easily, we call them conductors. That’s why we use them as cooking utensils because heat moves fast through the metal pan to the food. There are materials through which heat passes slowly or not at all. We call this insulator. Some insulators are wood, plastic and ceramic.

Convection is the transfer of heat through circulation. Liquids and gases transfer heat this way. Water rises when heated and sinks when cooled, thus producing circulation.

HEAT TRANSFER IN SOLID MATERIALS

Radiation does not depend on the presence of matter to transfer heat. The heat we receive from the sun is radiant energy. Radiant energy travels as waves through space. Heat waves hit earth and cause warming. Our atmosphere traps the warmth.

HEAT TRANSFER IN SOLID MATERIALS

HEAT TRANSFER IN SOLID MATERIALS

HEAT TRANSFER IN SOLID MATERIALS

HEAT TRANSFER IN SOLID MATERIALS

Multiple Choice

1. Heat travels from the sun to Earth by ___.

• radiation

• conduction

• convection

• Insulation

Multiple Choice

Energy transfer by convection is primarily restricted to ____.

• gases

• Liquid and gases

• solids

• liquids

Multiple Choice

A piece of metal will feel colder than a piece of wood at the same temperature. Why?

• Metals are colder than wood.

• Metals, in general, are good heat conductors.

• Wood, in general, is a poor insulator.

• Metals, in general, have a higher specific heat capacity than wood.

Multiple Choice

What is the direction of heat transfer?

• from bottom to top

• from cold to hot

• from hot to cold

• from side to side

Multiple Choice

How is heat transferred in solid materials?

• A. through conduction

• through convection

• through radiation

• through vacuum

Multiple Choice

What happens to a liquid when heated?

• It increases in temperature

• It increases in volume

• it increases in water level

• through vacuum

Multiple Choice

What may happen to a solid when it is continuously exposed to heat?

• It may melt.

• It may expand.

• It may decrease in volume.

• It may become heavier.

Multiple Choice

When heat is transferred through gases it is called_______.

• conduction

• convection

• radiation

• roasting

Multiple Choice

Heat transfer by convection occurs when ______.

• atoms give off heat in the form of electromagnetic waves.

• electrons bump into other electrons.

• particles of a fluid move from place to place.

• electromagnetic waves travel from one place to another through a vacuum.

Multiple Choice

The reason you can hold your fingers beside (but not above) a candle flame without getting hurt is that ____.

• air is a poor heat conductor

• hot-air convection currents travel upward

• hot air rises

• all of the above

SUMMATIVE ASSESSMENT FOR WEEK 4

​SITUATION: The equipment you have at home are very useful and essential. They could make the job at home easier and lighter especially if you know how to use each of this equipment. However, improper use of these things may become dangerous and may cause us harm. You will make a poster chart showing what you should do in using the equipment that produce heat. Your outputs will be assessed using the following: benefit to the community, message/clarity, presentation/organization.

SUMMATIVE ASSESSMENT FOR WEEK 4

GOAL: Show what to do in using the equipment that produce heat.

​

PRODUCT: Make a poster chart showing what you should do in using the equipment that produce heat

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You can use your phone in editing (can be digital or not). This is just a sample of a poster chart. Make sure you will do the product of the assigned task.