EQUIPMENT/MEASUREMENT

Unit 1 – Intro to Biology

Unit 1 – Intro to Science

Lab Equipment Review

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.

Unit 1 – Intro to Science

Measurement

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)

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

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)

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)

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

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Pay attention to the scales for each cylinder.

Measuring Volume

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9 cm

8 cm

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

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

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