equipment/measurement unit 1 – intro to biology. unit 1 – intro to science lab equipment review
TRANSCRIPT
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EQUIPMENT/MEASUREMENT
Unit 1 – Intro to Biology
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Unit 1 – Intro to Science
Lab Equipment Review
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Lab Equipment Review
Graduated Cylinder Used to measure
volume.
Beaker Holds liquids
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Lab Equipment Review
Flask glassware used in
making, heating and storing solutions.
Metric Ruler Used to measure
length
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Lab Equipment Review
Thermometer Used to measure
temperature, can be alcohol or mercury.
Petri Dish Covered dish,
used to grow/culture bacteria.
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Lab Equipment Review
Electronic Balance Electronic device
used to find the mass of an object.
Hot Plate Heats substances
using electricity.
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Lab Equipment Review
Filter Paper Filters
out/separates solid substances from liquids.
Forceps Used to hold or
pick up small objects.
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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.
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Lab Equipment Review
Goggles Protects your
eyes.
Apron A garment worn
to protect your clothing.
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Lab Equipment Review
Scissors used to cut
materials.
Microscope related material will be covered in a separate lecture.
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Unit 1 – Intro to Science
Measurement
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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 meters
1 Meter
100 Centimeters (cm)
1 Centimeter
10 Millimeters (mm)
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Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg
How many millimeters are in 1 centimeter?
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.
1 centimeter = 10 millimeters
Measuring Length
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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 Kilogram (kg)
1000 Grams (g)
1 Gram (g)
1000 Milligrams (mg)
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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)
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We will be using a graduated cylinder to find the volume of liquids and other objects.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
Measuring
meniscus
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Pay attention to the scales for each cylinder.
Measuring Volume
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9 cm
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We can measure the volume of regular object using the formula
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We can measure the volume of irregular object using water
displacement . Amount of H2O with object =
______
About of H2O without object = ______
Difference = Volume = ______
Measuring Volume
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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
Conversion Practice
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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
Metric Conversion