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Welcome to TicTac Town. TIC TAC LESSON Heat and Light. Second Grade. Heat and Light. Heat and light are both types of energy . We can see light energy. We feel heat energy. Some light energy comes from the sun. When sunlight strikes the earth, it changes to heat.

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Tic tac lesson heat and light

Welcome to TicTac Town

TIC TAC LESSON Heat and Light

Second Grade


Heat and light
Heat and Light

  • Heat and light are both types of energy.

  • We can see light energy.

  • We feel heat energy.

  • Some light energy comes from the sun.

  • When sunlight strikes the earth, it changes to heat.

  • Without the sun the Earth would be cold and dark.


Making heat and light
Making Heat and Light

  • The sun is not the only thing that gives us heat and light.

  • Fire also gives us heat and light.

  • Some people use fire for heat, and some people use fire for light.


Light without heat
Light Without Heat

  • A few things give off light without giving off heat.

  • A lightning bug is a good example of this.


Heat without light
Heat Without Light

  • Some things may not look hot.

  • We cannot see heat.

  • You should not touch things that might be hot.


Reflecting light
Reflecting Light

  • Many things do not give off their own light (rocks, trees, water.)

  • We need light to help us see these things.

  • We can see things that do not give off their own light.

  • We can see them because they reflect light.

  • Light bounces off things that reflect light.


Good reflectors
Good Reflectors

  • Some things reflect light better than other things.

  • Light colors reflect light better than dark colors.

  • Smooth, shiny things reflect much light. A mirror is smooth and reflects light well.


Good reflectors1
Good Reflectors

  • Not all light that shines on objects is reflected.

  • Light passes through some things.

  • Some things let only part of the light pass through.

  • Some things do not let any light pass through.


Heat moves
Heat Moves

  • Heat moves through things.

  • We can feel heat from a fire.

  • The heat moves through the air.

  • When food is cooked, heat moves up through the pan to the food.


Heat moves1
Heat Moves

  • Sometimes we do not want heat to move through things.

  • Heavy clothing, thermos bottles, and insulation are all examples of things that keep heat from moving.


Changing heat energy
Changing Heat Energy

  • Things with lots of heat energy are warm.

  • Rubbing your hands together makes them warmer. You are adding heat energy.


Measuring hot and cold
Measuring Hot and Cold

  • We can use a thermometer to measure hot and cold.


Using heat
Using Heat

  • We use heat energy to change things. Food changes when we cook it.

  • Heat keeps our homes warm.

  • We use heat to dry our clothes.


Using light
Using Light

  • We use light to light our homes.

  • We use it to light our streets also.


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