Class 6 Exam > Class 6 Notes > Physics Class 6 ICSE > Mnemonics: Physical World And Units & Measurements
Mnemonics: Physical World And Units & Measurements | Physics Class 6 ICSE PDF Download
| Table of contents |
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| 1. Physical World |
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| 2. Seven Fundamental Quantities |
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| 3. Systems of Units |
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| 4. Applications of Dimensional Analysis |
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| 5. Two Supplementary Units |
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| 6. Scientific Notation |
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MNEMONICS are powerful tools to simplify complex physics concepts and make learning easier.
This edurev document provides creative and concise mnemonics to help students quickly grasp and recall key topics. Use them to make your study sessions more efficient and effective! Happy Learning!
1. Physical World
Mnemonic: "Good Workers work for Extended Session"
Explanation:
- Good: Gravitation
- Workers: Weak Nuclear Force
- Extended: Electromagnetism
- Session: Strong Nuclear Force
Strength wise arrangement of fundamental forces in ascending order:
Gravitation < Weak Nuclear Force < Electromagnetism < Strong Nuclear Force
The order should be learn as can be asked in conceptual based questions.
2. Seven Fundamental Quantities
Mnemonic: "Let My Time Always Keep Me Calm"
Explanation:
- Let: Length - Metre (m)
- My: Mass - Kilogram (kg)
- Time: Time - Second (s)
- Always: Electric Current - Ampere (A)
- Keep: Thermodynamic Temperature - Kelvin (K)
- Me: Amount of Substance - Mole (mol)
- Calm: Luminous Intensity - Candela (cd)
Helpful in solving dimensional analysis questions.
3. Systems of Units
Mnemonic: "Can Frogs Make Sandwiches?"
Explanation:
- C - CGS System (Centimeter, Gram, Second)
- F - FPS System (Foot, Pound, Second)
- M - MKS System (Meter, Kilogram, Second)
- S - SI System (International Standard System)
4. Applications of Dimensional Analysis
Mnemonic: "Daring Cats Climb Down"
Explanation:
- Daring - Derive relationships
- Cats- Check correctness of equations
- Climb - Convert units
- Down - Deduce formulas
A method for solving all the numericals of dimensional analysis.
5. Two Supplementary Units
Mnemonic: "Ravi Smiles"
Explanation:
- Ravi - Radian (Plane Angle)
- Smiles - Steradian (Solid Angle)
6. Scientific Notation
Mnemonic: "Power Saves Time!"
Explanation:
- Use powers of 10 to represent very large or small numbers concisely.
MASTER THESE SHORTCUTS, AND LET SUCCESS FOLLOW!
The document Mnemonics: Physical World And Units & Measurements | Physics Class 6 ICSE is a part of the Class 6 Course Physics Class 6 ICSE.
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FAQs on Mnemonics: Physical World And Units & Measurements - Physics Class 6 ICSE
| 1. What are the seven fundamental quantities in physics? |  |
Ans. The seven fundamental quantities in physics are length (meter), mass (kilogram), time (second), electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole), and luminous intensity (candela). These quantities serve as the foundation for various measurements in physical science.
| 2. How do systems of units differ from each other? | |
Ans. Systems of units differ in the base quantities they use and the way they define derived quantities. The most common systems include the International System of Units (SI), which is based on the seven fundamental quantities, and the Imperial system, which uses different units like feet, pounds, and gallons. Each system has its own conventions for measurement and usage in various fields.
| 3. What is dimensional analysis and how is it applied? | |
Ans. Dimensional analysis is a mathematical technique used to convert between units and check the consistency of equations by analyzing the dimensions of the quantities involved. It can help in deriving relationships between physical quantities and ensuring that equations are dimensionally homogeneous, meaning both sides of the equation have the same dimensions.
| 4. What are the two supplementary units in the SI system? | |
Ans. The two supplementary units in the SI system are radian (for measuring angles) and steradian (for measuring solid angles). These units are used alongside the seven fundamental units to provide a complete framework for measurements in physics.
| 5. How does scientific notation benefit measurements in physics? | |
Ans. Scientific notation simplifies the representation of very large or very small numbers, making calculations easier and reducing the likelihood of errors. It allows scientists and engineers to express measurements concisely, such as 3.0 × 10^8 meters for the speed of light, which is much more manageable than writing out the full number.
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