Transcript File
EQUIPMENT/MEASUREMENT
Unit 1 – Intro to Biology
Lab Equipment Review
Unit 1 – Intro to Science
Lab Equipment Review
Graduated Cylinder
Used
to measure
volume.
Beaker
Holds
liquids
Lab Equipment Review
Flask
glassware
used in
making, heating and
storing solutions.
Metric Ruler
Used
to measure
length
Lab Equipment Review
Thermometer
Used
to measure
temperature, can be
alcohol or mercury.
Petri Dish
Covered
dish, used to
grow/culture bacteria.
Lab Equipment Review
Electronic Balance
Electronic
device used
to find the mass of an
object.
Hot Plate
Heats
substances using
electricity.
Lab Equipment Review
Filter Paper
Filters
out/separates
solid substances from
liquids.
Forceps
Used
to hold or pick
up small objects.
Lab Equipment Review
Dissecting Pins
Used
during the
dissection process to
keep specimen parts in
place.
Dissecting Tray
Used
to hold/contain
specimen during
dissection.
Lab Equipment Review
Goggles
Protects
your eyes.
Apron
A
garment worn to
protect your clothing.
Lab Equipment Review
Scissors
used to cut materials.
Microscope related
material will be
covered in a separate
lecture.
Measurement
Unit 1 – Intro to Science
The Metric System
The basic unit of length
in the metric system in
the meter and is
represented by a
lowercase m.
Metric Units
1
Kilometer (km)
1000
1
meters
Meter
100
Centimeters
(cm)
1
Centimeter
10
Millimeters (mm)
Measuring Length
How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters
What is the length of the line in centimeters? _______cm
What is the length of the line in millimeters? _______mm
HINT: Round to the nearest tenth.
Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg
The Metric System
Mass refers to the
amount of matter in an
object.
The base unit of mass
in the metric system in
the gram and is
represented by g .
Metric Units
1
1
Kilogram (kg)
1000 Grams (g)
Gram (g)
1000
(mg)
Milligrams
The Metric System
Volume is the amount
of space an object
takes up.
The base unit of
volume in the metric
system in the L and is
represented by L or l .
Metric units
1 liter (L)
1000
milliliters (mL)
Measuring
We will be using a graduated
cylinder to find the volume of
liquids and other objects.
meniscus
Read the measurement based on the
bottom of the meniscus or curve.
When using a real cylinder, make
sure you are eye-level with the level
of the water.
What is the volume of water in the
cylinder? _____mL
What is the volume of water in each cylinder?
Pay attention to the scales for each cylinder.
Images created at http://www.standards.dfes.gov.uk/primaryframework/downloads/SWF/measuring_cylinder.swf
Measuring Volume
Measuring Volume
9 cm
We can measure the volume of regular object
using the formula length x width x height.
_____ X _____ X _____ = _____
8 cm
We can measure the volume of
irregular object using water displacement .
Amount of H2O with object = ______
About of H2O without object = ______
Difference = Volume = ______
esources.edb.gov.hk/~s1sci/R_S1Science/sp/en/sy
llabus/unit14/new/testingmain1.htm
10 cm
Conversion Practice
Try these conversions using the ladder method.
1000 mg = _______ g
1 L = _______ mL
160 cm = _______ mm
14 km = _______ m
109 g = _______ kg
250 m = _______ km
Metric Conversion
Write the correct abbreviation for each metric unit.
1) Kilogram _____
4) Milliliter _____
7) Kilometer _____
2) Meter _____
5) Millimeter _____
8) Centimeter _____
3) Gram _____
6) Liter _____
9) Milligram _____
Try these conversions, using the ladder method.
10) 2000 mg = _______ g
15) 5 L = _______ mL
20) 16 cm = _______ mm
11) 104 km = _______ m
16) 198 g = _______ kg
21) 2500 m = _______ km
12) 480 cm = _____ m
17) 75 mL = _____ L
22) 65 g = _____ mg
13) 5.6 kg = _____ g
18) 50 cm = _____ m
23) 6.3 cm = _____ mm
14) 8 mm = _____ cm
19) 5.6 m = _____ cm
24) 120 mg = _____ g