Title Class 6 Science (Curiosity) Chapter 7- Temperature and its Measurement Book Solution with notes.pdf ✅

Class VI Science (Curiosity) Book Solution with Key Notes/Points ©kvsecontent.com ▪ Must be held vertically while measuring ▪ Temperature read while thermometer is immersed Important Points 1. Precautions while using thermometers ▪ Handle with care to avoid breakage ▪ Clean/sanitize before and after use ▪ Hold vertically while measuring ▪ Don't hold by the bulb ▪ Read temperature at eye level 2. Normal body temperature ▪ Average is 37.0°C (98.6°F) ▪ Can vary slightly between individuals ▪ Affected by age, time of day, and activity level ▪ Temperature below 35°C or above 42°C is dangerous 3. Air Temperature ▪ Important weather parameter ▪ Measured at weather stations worldwide ▪ Varies with seasons and time of day ▪ Used in weather forecasting Historical Note Anna Mani (1918-2001), known as the 'Weather Woman of India', made significant contributions by ▪ Inventing weather measurement instruments ▪ Reducing India's dependence on imported instruments ▪ Exploring renewable energy possibilities ▪ Helping India become a leader in renewable energy Important Concepts 1. Absolute Zero: The lowest possible temperature that can theoretically be achieved (-273.15°C or 0 K) 2. Heat Sensors: Devices in digital thermometers that detect temperature changes. 3. Non-contact Thermometers: Infrared thermometers that can measure temperature without touching (used during COVID-19) 4. Room Thermometer: A wall-mounted thermometer that gives approximate room temperature 5. Core Temperature: The temperature at the centre of an object (like the Sun's core at 15 million degrees Celsius)
Class VI Science (Curiosity) Book Solution with Key Notes/Points ©kvsecontent.com Key Term 1. Analyse: To examine something in detail to understand it better or draw conclusions 2. Calculate: To determine or work out a value using mathematical operations 3. Compare: To examine the similarities and differences between things 4. Discuss: To talk about something in detail, examining different aspects 5. Infer: To form a conclusion based on evidence and reasoning 6. Investigate: To carry out a systematic examination or study 7. Measure: To find out the size, amount or degree of something using standard units 8. Observe: To watch carefully and notice details 9. Predict: To say what will happen before it occurs 10. Precaution: Safety measure taken in advance to prevent problems 11. Record: To write down or store information for future reference Relationship Between Temperature and Sensing ▪ Our sense of touch alone cannot reliably determine temperature ▪ The same water can feel different temperatures to different hands (Activity 7.1 demonstrates this) ▪ This unreliability of touch led to the need for accurate measuring instruments Important Temperature Constants ▪ Boiling water temperature at sea level: 100°C ▪ Melting ice temperature: 0°C ▪ Temperature remains constant during melting and boiling ▪ Human body temperature range: 35°C to 42°C ▪ Room temperature is typically around 20-25°C Writing Temperature Correctly ▪ Temperature scales (Celsius, Fahrenheit, Kelvin) start with capital letters ▪ Units (degree Celsius, degree Fahrenheit, kelvin) start with lowercase letters ▪ Always leave a space between number and unit (e.g., 37.0 °C) ▪ Use plural 'degrees' for temperatures above one degree ▪ No degree symbol (°) used with Kelvin ▪ No period after unit symbols unless at end of sentence
Class VI Science (Curiosity) Book Solution with Key Notes/Points ©kvsecontent.com Temperature Unit Conversions ▪ Celsius to Kelvin: K = °C + 273.15 ▪ Celsius to Fahrenheit: °F = (°C × 9/5) + 32 ▪ Fahrenheit to Celsius: °C = (°F - 32) × 5/9 ▪ Same temperature in different units: 37.0°C = 98.6°F = 310.15K Temperature Scale Relationships At 0°C (freezing point of water) ▪ 0°C = 32°F = 273.15K ▪ This is the temperature at which water freezes At 37°C (normal human body temperature) ▪ 37.0°C = 98.6°F = 310.15K ▪ This is the average temperature of a healthy person At 100°C (boiling point of water) ▪ 100°C = 212°F = 373.15K ▪ This is the temperature at which water boils at standard atmospheric pressure At absolute zero (lowest possible temperature) ▪ -273.15°C = -459.67°F = 0K ▪ This is the theoretical lowest temperature possible