Heat and Energy
ICSE · Class 9 · Physics
Flashcards for Heat and Energy — ICSE Class 9 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.
Interactive on Super Tutor
Studying Heat and Energy? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
1,000+ Class 9 students started this chapter today
Super Tutor has 6+ illustrations like this for Heat and Energy alone — flashcards, concept maps, and step-by-step visuals.
See them allState the definition of heat.
Answer
Heat is the internal energy of molecules constituting the body. It flows from a hot body to a cold body.
State the definition of temperature.
Answer
Temperature is a quantity which tells the thermal state of a body, that is, the degree of hotness or coldness of the body. It determines the direction of flow of heat when two bodies at different temp…
What is the SI unit of heat?
Answer
The SI unit of heat is joule (J). Heat is a form of energy, so it uses the same SI unit as energy.
What is the relation between calorie and joule?
Answer
1 cal = 4.186 J (or nearly 4.2 J). This means calorie can be converted into joule by multiplying by 4.186.
Convert 2 cal into joule.
Answer
Given: 1 cal = 4.186 J Formula: Energy in J = calories × 4.186 Step 1: 2 cal × 4.186 J/cal = 8.372 J Answer: 8.372 J…
Convert 500 cal into joule.
Answer
Given: 1 cal = 4.186 J Formula: Energy in J = calories × 4.186 Step 1: 500 cal × 4.186 J/cal = 2093 J Answer: 2093 J…
State the relation between joule and erg.
Answer
1 J = 10^7 erg. This is the CGS relation for energy.
How are Celsius and Kelvin temperatures related?
Answer
T K = 273 + t °C Here, T is temperature in kelvin and t is temperature in degree celsius. Example: 25°C = 298 K.
+44 more flashcards available
Practice AllFrequently Asked Questions
What are the important topics in Heat and Energy for ICSE Class 9 Physics?
How to score full marks in Heat and Energy — ICSE Class 9 Physics?
How many flashcards are available for Heat and Energy?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Heat and Energy
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Heat and Energy chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Physics.