Q.1 How does turning on a heater in a room make the whole room warm?
Q.2 How does heat from the sun reach the earth?
Q.3 Mention one similarity between heat and light.
Q.4 When two bodies are in contact, heat flows from the hotter to the colder body. When does heat stop
flowing?
Answers
Step-by-step explanation:
Q.1 The heater contains a resistor. When high voltage is passed it produce a large amount of heat the blower situated in the heater blows this heat which diffuses in the room to make the room hot.
Q.2 The sun heats the earth through radiation. Since there is no medium (like the gas in our atmosphere) in space, radiation is the primary way that heat travels in space. When the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.
Q.3 Although light and heat are two different entities, there are a few similarities between them. As we all know, light and heat, both are the forms of energy and this energy is acquired from the sun, which is the ultimate source of energy. One more similarity is, both light and heat have wavelength and frequency.
Q.4 When you bring two objects of different temperaturetogether, energy will always be transferred from the hotter to the cooler object. The objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal. We say that heat flows from the hotter to the cooler object
Answer:
1.whole room locked doors and windows then used the heater 2.the sun reach the earth from heat with the help of sunray