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Temperature

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Temperature

Study Guide

Key Definition

Temperature is the measure of hotness or coldness of an object. It can be measured using a thermometer with scales in $^\circ C$ and $^\circ F$.

Important Notes

Normal human body temperature is approximately $37^\circ C$ or $98^\circ F$.
Water freezes at $0^\circ C$ or $32^\circ F$.
Water boils at $100^\circ C$ or $212^\circ F$.
To convert from Fahrenheit to Celsius, use $C = \frac{5}{9} (F - 32)$.
To convert from Celsius to Fahrenheit, use $F = \frac{9}{5} C + 32$.
To convert from Kelvin to Celsius, use $C = K - 273.15$; from Celsius to Kelvin, use $K = C + 273.15$.

Mathematical Notation

$+$ represents addition

$-$ represents subtraction

$\times$ or $*$ represents multiplication

$\div$ or $/$ represents division

Remember to use proper notation when solving problems

Why It Works

Understanding temperature scales helps in converting between $^\circ C$ and $^\circ F$ using conversion formulas.

Remember

Always use the conversion formulas: $C = \frac{5}{9} (F - 32)$ and $F = \frac{9}{5} C + 32$.

Quick Reference

Water Freezes:$0^\circ C$ or $32^\circ F$

Water Boils:$100^\circ C$ or $212^\circ F$

Understanding Temperature

Choose your learning level

Watch & Learn

Video explanation of this concept

Beginner

Start here! Easy to understand

Beginner Explanation

Temperature measures how hot or cold something is. We commonly use the Celsius scale, where water freezes at $0^\circ C$ and boils at $100^\circ C$. You can read temperature on a thermometer and compare values by simple subtraction to see how much hotter or colder one reading is from another.

Practice Problems

Test your understanding with practice problems

Quick Quiz

Single Choice Quiz

Beginner

What is the freezing point of water in Celsius? $^\circ C$

Real-World Problem

Question Exercise

Intermediate

Teenager Scenario

Imagine you are planning a picnic and want to ensure the weather is warm enough. The forecast says $68^\circ F$. Convert it to Celsius.

Thinking Challenge

Thinking Exercise