Transcript COMMON MEASUREMENT TOOLS USED IN THE BIOLOGY LAB

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This tool is used to
measure the VOLUME of
a liquid.
The proper way to read
this tool is at EYE LEVEL
at the bottom of the
MENISCUS, which is the
curved surface of the
liquid.
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MENISCUS
What is the
volume of
the rock?
1) 7 mL
2) 38 mL
3) 33 mL
4) 20 mL
5) 20 mL
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Metric rulers are used to
measure length, width, and
height.
The LARGE numbers on the
ruler are CENTIMETERS. The
small lines between the
centimeter marks are called
MILLIMETERS.
There are TEN (10) millimeters
in a centimeter.
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CENTIMETERS
What do the SMALL lines
between the numbered
marks represent?
MILLIMETERS
How many millimeters in a one (1) centimeter?
10 mm
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5.1 centimeters (5.1
cm)
5.1 cm X 10 = 51
millimeters (51 mm)
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Thermometers are used to
measure TEMPERATURE.
Since scientists use the
METRIC SYSTEM, they use
thermometers that
measure degrees Celsius
rather than degrees
Fahrenheit.
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17 degrees C
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An electronic balance is
used to measure the
MASS of an object.
It is a more PRECISE tool
than a triple beam
balance because it can
record mass to the
hundreth of a GRAM.
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To the nearest
WHOLE number:
45 grams (45 g)
To the nearest
tenth:
45.2 grams (45.2 g)
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1. GOGGLES –
Protect Eyes
2. GLOVES –
Protect Skin
3.
APRON –
Protect Clothes
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TEST TUBE RACK
Used to support test
tubes during
experiments
TEST TUBE HOLDER
Used to hold hot test
tubes or while heating a
test tube over a flame
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TONGS – Used to
safely handle hot
beakers
SAFETY SHOWER –
To wash chemicals
off if they splash on
skin
EYE WASH STATION
– To flush eyes
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BEAKER – Used to transfer
and/or mix larger volumes
of liquid
FLASK – For mixing and
heating liquids; Narrow
neck helps prevent
splashing
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TEST TUBES
STOPPERS (corks)
TEST TUBE RACK
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EYE DROPPER (PIPETTE) –
Used to transfer very small
amounts of liquid
TEST TUBE
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------- HOT WATER BATH – A way
to safely heat chemicals in
test tubes
NOTE: Test tubes should
NEVER be stoppered while
being heated
------BUNSEN BURNER – Used to
heat things over a flame
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CHEMICAL INDICATORS are used to test materials for the
presence of various substances such as:
* GLUCOSE (Benedicts)
* STARCH (Iodine)
* ACID (Blue Litmus Paper)
* BASE (Red Litmus Paper)
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RULER
Dissecting
Kit
FORCEPS
PIPETTE
PROBES
SCISSORS
SCALPEL
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