Answer the following questions in one sentence.
1.What is thermal energy?
2. What does temperature of a substance indicate?
3. Define heat.
4. Name two good conductors of heat.
5. What is a heat insulator?
6. What is the lower point of an ordinary laboratory thermometer?
tuo to three sentences.
Answers
Answer:
1. Thermal energy, internal energy present in a system in a state of thermodynamic equilibrium by virtue of its temperature. Thermal energy cannot be converted to useful work as easily as the energy of systems that are not in states of thermodynamic equilibrium.
2 .Temperature is a measure of the average kinetic energy of the particles of a substance. The higher the temperature of an object, the higher is its kinetic energy. Kinetic energy is a type of energy associated with motion.
3 . the feeling of something hot.
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Answer:
1. What is thermal energy?
Ans. Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.
2. What does temperature of a substance indicate?
Ans. Temperature is a measure of the average kinetic energy of the particles of a substance. The higher the temperature of an object, the higher is its kinetic energy. Kinetic energy is a type of energy associated with motion.
3. Define Heat.
Ans. Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy. Heat is typically measured in Btu, calories or joules.
4. Name two good conductors of heat.
Ans. Gold, Silver, Copper, Aluminum, Iron etc are good heat conductors as well as electrical conductors.
5. What is a heat insulator?
Ans. Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator. Wood, plastic, rubber, and glass are good insulators.
6. What is the lower point of an ordinary laboratory thermometer? two to three sentences.
Ans. The lowest temperature that can be measured using a laboratory thermometer is -10 degree celsius. -110 degree Celsius is the lowest point of an ordinary laboratory thermometer.