The transfer of heat can occur in three ways: conduction, convection, and radiation. Heat transfer occurs between states of matter whenever a temperature difference exists and heat transfer occurs only in the direction of decreasing temperature, meaning from a hot object to a cold object.

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1. • Heat transfer is the exchange of thermal energy between physical objects. • Heat will naturally flow from a hotter to a colder object • Thermal equilibrium happens when all involved objects and their environment reach the same temperature.

2. When a certain amount of heat energy is given to a substance, it will undergo one or more of the following changes: Temperature of the substance rises.

3. Thermal energy flows between objects due to differences in temperature.

4. The correct option is A Temperature. Temperature is the measure of hotness or coldness of a substance.

5. Thermal energy refers to the kinetic energy of randomly moving particles in a substance. Particles can have translational, rotational, and/or vibrational kinetic energy, depending on the state of matter. Temperature is a measure of the average kinetic energy of the particles in a substance.

6. Wool is a bad conductor of heat. It traps air between its fibres. This trapped air does not allow heat to pass from our body into the surrounding thereby keeping us warm.

7. Since the vacuum is present in between the two walls of the flask, the flow of heat by convection is stopped. As a result, hot liquid kept in the thermo flask does not become cold and cold liquid does not become hot.

8. I don't know about that