Question

please please please answer these questions...
class seventh DAV school....
please try to give answers of these questions...​

Answer 1

1) The direction of heat flow in a small element within a solid only depends on the temperature of its neighboring elements. Heat within the solid will flow from hot to cold. It will cheerfully flow downward if it is cooler down there

2)

a) When we apply break, heat is generated due to the friction between brakes and wheels, that is responsible for stopping the brake. ... When we jump up-down, our muscular energy is converted to heat energy by cells that is why we feel warm in cold weather.

b) People often jump up and down in cold weather to feel warm because the body produces heat while jumping, this heat keeps them warm. When we apply brakes in a moving car heat produces due to friction

3) the movement of its particles increases.

bonds between particles break when a substance melts or evaporates, or sublimes to form a gas from a solid.

4) The two main differences between a clinical and an ordinary thermometer are their functions, because an ordinary thermometer measures humidity, while a clinical thermometer measures the temperature of the human body, according to Dictionary.com.

5) 1) convection, radiation

2) radiation

3) conduction

4) radiation

6) Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean.