Wake-up
1. List five pieces of lab equipment in the picture.
2. What are three pieces of lab equipment that can be used to measure volume?
Wake-up (Think!!)
1. What is the name of the “curve” that the eye is looking at?
2. What piece of lab equipment is shown to the right?
3. What is the measurement shown?
SWBAT• Understand the various means of
measuring for Biology.• Apply measuring skills.
Length
The distance between two
points.
Unit for LengthMeter (m); Centimeter (cm); Millimeter (mm)
Tool
Ruler; Meter Stick
MassThe amount of matter (substances) within an objectWho has the most matter, an elephant or a mouse?Who has the most mass?
Units for MassGrams (g)
ToolElectronic Balance
Volume
The amount of space a substance occupies; gas, liquid or solid
Units for Volume
Liter (L); Millimeters (mL)
Tools
Graduated cylinder (Preferred); Beaker; Flask
Meniscus Curved upper surface of a liquid in a tube
Meniscus
How to read volume of a liquid
What is wrong with the picture?
The graduated cylinder should be on a flat surface; Need to read volume at eye level
Read volume at the BOTTOM of the meniscus
Practice reading volume on a graduated cylinder
Find the scale of the graduated cylinder. Read at the bottom of
the meniscus.
8.45 mL
Practice reading volume on a graduated cylinder
Find the scale of the graduated cylinder. Read
at the bottom of the meniscus.
32.5 mL
Practice reading volume on a graduated cylinder
Find the scale of the graduated cylinder. Read
at the bottom of the meniscus.
33.5 mL
Practice reading volume on a graduated cylinder
Draw in the water level for 11.4ml
Temperature
Measure of the warmth or coldness of an object.
Units for TemperatureCelsius (°C), Fahrenheit (°F); Kelvin (K)
Tools
Thermometer