Post on 29-Apr-2018
transcript
The Measurement of Science
What does it measure?• Length (how long)
– The _______ is the basic unit• A little longer than a yard• Meterstick, ruler
• Mass (how much stuff its made of)– The ____________is the basic unit
• A paper clip is about 2 grams• scale
• Volume (how much space it takes)– The ____________is the basic unit
• One liter bottle vs 2 liter bottle• Graduated cylinder, beaker
SI Prefixes• Prefixes are are used to change units by a factor of 10– Kilo = ______ abbreviation - K– Hecto = 100 abbreviation - H– Deka = 10 abbreviation - D– Deci = 0.1 abbreviation - d– Centi = ______ abbreviation - c– milli = 0.001 abbreviation - m
• Example: if you travel 2 kilometers you have traveled– ______________ meters! Kilo stands for ___________
King Henry Doesn’t Usually Drink Chocolate Milk
Kilo Hecto Deka Unit Deci Centi Milli
How do we convert from one measurement to another?
How do I remember that?
TRY THIS USING THE STAIRCASE METHOD
1000 mg = ______ g • Step 1: Determine if you are going to go
up or down the ladder. • Step 2: Determine how many steps there
are from milligrams to grams.• Step 3: Move the decimal point the
amount of places that was determined in steps 1 & 2.
TRY THIS USING THE STAIRCASE METHOD
•0.15 L = __________ ml
•25.6 cm= __________ m
•150,000 mg=_________ kg
Using a Graduated Cylinder
Measure to the bottom of the curve
You should be at eye level with the liquid
Parallax Error
• The error caused by reading measurements from an angle.
• Example- reading a speedometer from the passengers side.