Podcast
Questions and Answers
What is the total number of millimeters in 8 meters?
What is the total number of millimeters in 8 meters?
Which of the following is the SI unit for measuring temperature?
Which of the following is the SI unit for measuring temperature?
How many seconds are there in one day?
How many seconds are there in one day?
What is the relationship between kilometers and meters?
What is the relationship between kilometers and meters?
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If a thermometer measures temperature in Fahrenheit, what is the equivalent of 32°F in Celsius?
If a thermometer measures temperature in Fahrenheit, what is the equivalent of 32°F in Celsius?
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Which conversion is correct concerning time measurement?
Which conversion is correct concerning time measurement?
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What is the correct conversion for centimeters to millimeters?
What is the correct conversion for centimeters to millimeters?
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Which of these methods is correct for measuring time?
Which of these methods is correct for measuring time?
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Which unit would you use for measuring a distance of 500 meters?
Which unit would you use for measuring a distance of 500 meters?
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What is the converted time duration of 2 days in hours?
What is the converted time duration of 2 days in hours?
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Study Notes
Measurement Overview
- Measurement determines the magnitude of a quantity against an agreed standard.
- Indigenous and modern methods exist for measurement practices.
Indigenous Methods of Measurement
- Practices have been localized and passed through generations.
- Focuses on measuring length, mass, and time.
Length Measurement
- Length measures the distance between two points.
- Indigenous units of length in Ethiopia include:
- Hand-span: Distance from the tip of the little finger to the thumb tip.
- Digit: Width of an adult fingertip.
- Cubit: Distance from elbow tip to middle finger tip when extended.
- Foot: Distance from heel to big toe tip.
- Pace: Distance of one normal walking step.
- Arm Span: Distance from fingertip of one hand to the other when arms are stretched.
Mass Measurement
- Local mass measurement tools include:
- Quntal: Equivalent to 100 kilograms, used for grains.
- Feresula: Measures pepper and coffee, equivalent to 17 kilograms.
Time Measurement
- Time is the measure of an interval's duration.
- Indigenous method uses the shadow of a tree to tell time based on the Sun's position.
- Historical time measuring devices:
- Sundial, Sand Clock, and Water Clock.
Volume Measurement
- Volume measures the space an object occupies.
- Common tools in Addis Ababa markets for measuring volume:
- Jog: Plastic cup for liquids.
- Tassa: Can for cereals and liquids.
- Sini: Ceramic cup for coffee and spices.
- Birchiko: Glass for measuring various items.
SI Units and Conversions
-
Length: SI unit is meter (m).
- Conversions:
- 1 km = 1000 m
- 1 m = 100 cm
- 1 cm = 10 mm
- Conversions:
-
Time: SI unit is second (s).
- Time conversions:
- 1 hour = 60 minutes = 3600 seconds
- 1 day = 24 hours
- 1 week = 7 days
- 1 year = 365 or 366 days
- Time conversions:
Temperature Measurement
- Devices used: Thermometers (analog or digital).
- SI unit of temperature is Kelvin; other units include °C and °F.
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Description
This quiz explores the various methods of measurement as discussed in the Grade 8 General Science textbook. Students will learn to differentiate between indigenous and modern measurement techniques and their applications. Get ready to test your understanding of measuring quantities accurately!
