Measurement Units and Tools

Length

• Units of measurement:
  • Meter (m) - base unit of length in the International System of Units (SI)
  • Centimeter (cm) - 1/100 of a meter
  • Millimeter (mm) - 1/1000 of a meter
  • Kilometer (km) - 1000 meters
• Conversion between units:
  • 1 m = 100 cm
  • 1 m = 1000 mm
  • 1 km = 1000 m
• Tools for measuring length:
  • Ruler
  • Tape measure
  • Micrometer

Mass

• Units of measurement:
  • Gram (g) - base unit of mass in the SI
  • Kilogram (kg) - 1000 grams
  • Milligram (mg) - 1/1000 of a gram
  • Ton (t) - 1000 kilograms
• Conversion between units:
  • 1 kg = 1000 g
  • 1 g = 1000 mg
  • 1 t = 1000 kg
• Tools for measuring mass:
  • Balance
  • Scale

Capacity

• Units of measurement:
  • Liter (L) - base unit of capacity in the SI
  • Milliliter (mL) - 1/1000 of a liter
  • Kiloliter (kL) - 1000 liters
  • Cubic meter (m³) - 1000 liters
• Conversion between units:
  • 1 L = 1000 mL
  • 1 kL = 1000 L
  • 1 m³ = 1000 L
• Tools for measuring capacity:
  • Measuring cups
  • Graduated cylinders

Time

• Units of measurement:
  • Second (s) - base unit of time in the SI
  • Minute (min) - 60 seconds
  • Hour (h) - 60 minutes
  • Day (d) - 24 hours
• Conversion between units:
  • 1 min = 60 s
  • 1 h = 60 min
  • 1 d = 24 h
• Tools for measuring time:
  • Clock
  • Watch
  • Timer

Temperature

• Units of measurement:
  • Celsius (°C) - most commonly used unit of temperature
  • Fahrenheit (°F) - used in the United States
  • Kelvin (K) - absolute temperature scale
• Conversion between units:
  • °C to °F: (°C × 9/5) + 32
  • °F to °C: (°F - 32) × 5/9
  • K to °C: K - 273.15
• Tools for measuring temperature:
  • Thermometer
  • Thermostat

Length

• Meter is the base unit of length in the International System of Units (SI)
• 1 meter is equal to 100 centimeters or 1000 millimeters
• Kilometer is 1000 meters
• Rulers, tape measures, and micrometers are tools used to measure length

Mass

• Gram is the base unit of mass in the SI
• 1 kilogram is equal to 1000 grams
• 1 gram is equal to 1000 milligrams
• 1 ton is equal to 1000 kilograms
• Balances and scales are tools used to measure mass

Capacity

• Liter is the base unit of capacity in the SI
• 1 liter is equal to 1000 milliliters
• 1 kiloliter is equal to 1000 liters
• 1 cubic meter is equal to 1000 liters
• Measuring cups and graduated cylinders are tools used to measure capacity

Time

• Second is the base unit of time in the SI
• 1 minute is equal to 60 seconds
• 1 hour is equal to 60 minutes
• 1 day is equal to 24 hours
• Clocks, watches, and timers are tools used to measure time

Temperature

• Celsius is the most commonly used unit of temperature
• Fahrenheit is used in the United States
• Kelvin is the absolute temperature scale
• To convert Celsius to Fahrenheit, use the formula: (°C × 9/5) + 32
• To convert Fahrenheit to Celsius, use the formula: (°F - 32) × 5/9
• To convert Kelvin to Celsius, use the formula: K - 273.15
• Thermometers and thermostats are tools used to measure temperature

Learn about units of measurement for length and mass, including conversions and tools used for measuring. Understand the International System of Units (SI) and its applications.