1. Equipment/Measurement
Unit 1 – Intro to Biology

2. Lab Equipment Review
Unit 1 – Intro to Science

3. Lab Equipment Review Graduated Cylinder Beaker Used to measure volume.
Holds liquids

4. Lab Equipment Review Flask Metric Ruler
glassware used in making, heating and storing solutions.
Metric Ruler
Used to measure length

5. Lab Equipment Review Thermometer Petri Dish
Used to measure temperature, can be alcohol or mercury.
Petri Dish
Covered dish, used to grow/culture bacteria.

6. Lab Equipment Review Electronic Balance Hot Plate
Electronic device used to find the mass of an object.
Hot Plate
Heats substances using electricity.

7. Lab Equipment Review Filter Paper Forceps
Filters out/separates solid substances from liquids.
Forceps
Used to hold or pick up small objects.

8. Lab Equipment Review Dissecting Pins Dissecting Tray
Used during the dissection process to keep specimen parts in place.
Dissecting Tray
Used to hold/contain specimen during dissection.

9. Lab Equipment Review Goggles Apron Protects your eyes.
A garment worn to protect your clothing.

10. Lab Equipment Review Scissors
used to cut materials.
Microscope related material will be covered in a separate lecture.

11. Measurement
Unit 1 – Intro to Science

12. 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)

13. Measuring Length How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters
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.
Ruler:

14. 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)

15. 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)

16. Measuring
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
meniscus

17. Pay attention to the scales for each cylinder.
Measuring Volume
What is the volume of water in each cylinder?
Images created at A B C
Pay attention to the scales for each cylinder.

18. _____ X _____ X _____ = _____
Measuring Volume
We can measure the volume of regular object using the formula length x width x height.
10 cm
9 cm
8 cm
_____ X _____ X _____ = _____
We can measure the volume of irregular object using water displacement .
Amount of H2O with object = ______ About of H2O without object = ______ Difference = Volume = ______

19. 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

20. 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