🌡️ HEAT AND ENERGY – SHORT & LONG ANSWER
QUESTIONS
✏️ TWO MARK QUESTIONS
1. What is heat?
Answer: Heat is a form of energy that flows from a hot body to a cold body.
2. What is temperature?
Answer: Temperature is the measure of hotness or coldness of a body.
3. Define anomalous expansion of water.
Answer: The unusual behaviour of water where it contracts from 0°C to
4°C and expands after 4°C.
4. What is conduction?
Answer: Conduction is the transfer of heat through solids without
movement of particles.
5. What is convection?
Answer: Convection is the transfer of heat by movement of particles in
liquids and gases.
6. What is radiation?
Answer: Radiation is the transfer of heat without any medium.
7. What is renewable energy?
Answer: Energy sources that can be replenished naturally are called
renewable energy.
8. What is non-renewable energy?
Answer: Energy sources that cannot be replaced easily are called
non-renewable energy.
QUESTIONS
✏️ TWO MARK QUESTIONS
1. What is heat?
Answer: Heat is a form of energy that flows from a hot body to a cold body.
2. What is temperature?
Answer: Temperature is the measure of hotness or coldness of a body.
3. Define anomalous expansion of water.
Answer: The unusual behaviour of water where it contracts from 0°C to
4°C and expands after 4°C.
4. What is conduction?
Answer: Conduction is the transfer of heat through solids without
movement of particles.
5. What is convection?
Answer: Convection is the transfer of heat by movement of particles in
liquids and gases.
6. What is radiation?
Answer: Radiation is the transfer of heat without any medium.
7. What is renewable energy?
Answer: Energy sources that can be replenished naturally are called
renewable energy.
8. What is non-renewable energy?
Answer: Energy sources that cannot be replaced easily are called
non-renewable energy.
