TÀI LIỆU

Appendix

Science and Technology

Periodic Table of the Elements

Geological Time Clock

Geological Time Chart

Measurements and the Metric System

Measurements and the Metric System
Measurement Unit Abbreviation Metric Equivalent Approximate Standard Equivalent
Length nanometer nm 1 nm = 10−9 m
  • 1 mm = 0.039 inch
  • 1 cm = 0.394 inch
  • 1 m = 39.37 inches
  • 1 m = 3.28 feet
  • 1 m = 1.093 yards
  • 1 km = 0.621 miles
micrometer µm 1 µm = 10−6 m
millimeter mm 1 mm = 0.001 m
centimeter cm 1 cm = 0.01 m
meter m
  • 1 m = 100 cm
  • 1 m = 1000 mm
kilometer km 1 km = 1000 m
Mass microgram µg 1 µg = 10−6 g
  • 1 g = 0.035 ounce
  • 1 kg = 2.205 pounds
milligram mg 1 mg = 10−3 g
gram g 1 g = 1000 mg
kilogram kg 1 kg = 1000 g
Volume microliter µl 1 µl = 10−6 l
  • 1 ml = 0.034 fluid ounce
  • 1 l = 1.057 quarts
  • 1 kl = 264.172 gallons
milliliter ml 1 ml = 10−3 l
liter l 1 l = 1000 ml
kiloliter kl 1 kl = 1000 l
Area square centimeter cm2 1 cm2 = 100 mm2
  • 1 cm2 = 0.155 square inch
  • 1 m2 = 10.764 square feet
  • 1 m2 = 1.196 square yards
  • 1 ha = 2.471 acres
square meter m2 1 m2 = 10,000 cm2
hectare ha 1 ha = 10,000 m2
Temperature Celsius °C 1 °C = 5/9 × (°F − 32)