Q.4: Mention activity to explain:
1- Transfer of heat from high temperature to low temperature.
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2- Friction cause raising the temperature.
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3- Heat transfer through solids by conduction.
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4- Heat transfer through air by convection & radiation.
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Q.5: Complete the following:
1- Heat transfers by ---------------------, -----------------------, ---------------------
2- Heat transfers by conduction through --------------------------
3- Transfer of heat by -------------------- doesn't need media.
4- Heat transfers by convection through ------------------ & -----------------
5- From technological applications to produce heat ----------------, -------------- and ---------------------
6- ------------------ is a permanent resource of energy and ----------------- is a non-permanent resource of energy.
7- The most of the resources depends on that energy produced by ---------------
Q.6: Define:
1- Heat energy: ---------------------------------------------------------------------------
2- Temperature: --------------------------------------------------------------------------
Q.7: your classmate put his hand beside a lighted bulb and he feels warm, when he put it above the bulb he feel warm also, but when he touch it he feel hot.
Mention the way of heat transfer in the three states.
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