measurement getting ready for science labs. measuring length length and distance are measured in...
TRANSCRIPT
Measurement
Getting Ready for Science Labs
Measuring Length
• Length and distance are measured in millimeters (mm), centimeters (cm), meters (m), or kilometers (km).
• 1 meter is slightly larger than 1 yard• 1 inch equals about 2 1/2 centimeters • 1 kilometer equals about 6/10 of a mile
Millimeters (mm)
• 1 mm = 0.1 cm• Your ruler is marked in
centimeters with the tiny lines between them indicating millimeters.
• The thickness of a dime is 1 mm.
Centimeters (cm)
• 1 cm = 10 mm• In the science lab, you
will be measuring in this unit most often.
• Be aware that not all rulers are the same. Look for the “0” before measuring!
• The width of a fingernail is about 1 cm.
Meters (m)
• 1 m = 100 cm• The height from the
floor to your average door handle is just under 1 m.
• 400 m is the distance around a track.
Kilometers (km)
• 1 km = 1000 m• A little over 2 laps
around an outdoor track is about 1 km.
Measuring Volume
• Volume is measuring in milliliters (mL) and liters (L).
• Always read the measurement from the bottom of the meniscus.
• About 30 mL = 1 fl oz• 1 liter is slightly larger
than 1 quart
Milliliters (mL) and Liters (L)
1 mL = about 4 drops of liquid 1 L = half a 2-liter bottle of soda
Measuring Mass
• Mass is measured in milligrams (mg), grams (g), and kilograms (kg).
• We won’t use milligrams in class, but it can be seen listed on medicine bottles.
• About 28 grams equals 1 ounce.• 1 kilogram equals a little over 2 pounds.
Grams (g)
• 1 g = 0.001 kg• The mass of 1 paperclip
is about equal to 1 gram.
• Always make sure before using any scale or balance that you “zero” it out first!
Kilograms (kg)
• 1 kg = 1000 g• The mass of about 100
pennies will equal 1 kg.
Measuring Temperature
• Temperature is measured in degrees Celsius (°C).
• Water freezes at 0°C and at 32°F.
• Water boils at 100°C and at 212°F.
• Always make sure you are reading on the Celsius side of the thermometer.