Heat is a form of energy that flows from a body at higher temperature to a body at lower temperature.
The SI unit of heat is joule (J).
Temperature is the measure of the degree of hotness or coldness of a body.
The SI unit of temperature is kelvin (K).
| Heat | Temperature |
|---|---|
| Form of energy | Measure of hotness |
| Flows from hot to cold body | Does not flow |
| SI unit: Joule | SI unit: Kelvin |
Temperature is measured using a thermometer.
Q1. Heat is: A) A substance B) A form of energy C) A force D) A wave Answer: B Q2. Heat flows from: A) Cold body to hot body B) Hot body to cold body C) Any body to any body D) Cold body only Answer: B Q3. Temperature is a measure of: A) Heat energy B) Degree of hotness C) Thermal expansion D) Heat capacity Answer: B Q4. SI unit of heat is: A) Kelvin B) Joule C) Watt D) Pascal Answer: B Q5. SI unit of temperature is: A) Joule B) Celsius C) Kelvin D) Fahrenheit Answer: C Q6. Which instrument is used to measure temperature? A) Barometer B) Thermometer C) Calorimeter D) Ammeter Answer: B Q7. Which of the following is NOT an effect of heat? A) Expansion B) Change of state C) Increase in temperature D) Increase in mass Answer: D Q8. Heat transfer occurs due to difference in: A) Mass B) Pressure C) Temperature D) Volume Answer: C
Energy transferred due to temperature difference.
SI unit: Joule (J)
Measure of degree of hotness or coldness.
SI unit: Kelvin (K)
MCQs are frequently asked on difference between heat and temperature, units and effects of heat.
