What is the basic unit for length in the metric system?

1
Warm up

1. What is the basic unit for length in the metric
   system?
2. What is the basic unit for volume in the metric
   system?
3. What is the basic unit for mass in the metric
   system?

2

• Lessons 1 2
• Metric Conversions and Length

T. Trimpe 2008 http//sciencespot.net/
3
I. Background

1. The Metric System is a system of units for
   measurement
2. Used by scientists around the world
3. Easy to use because it is based on units of ten
   (10)

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II. How it works

• The basic units
• Lengthmeter
• Volumeliter
• Massgram
• Add prefixes for larger or smaller divisions
• King Hector Doesnt usually Drink
  Chocolate Milk!

5
III. Ladder Method
KILO1000Units
HECTO100Units
DEKA10Units
DECI0.1Unit
CENTI0.01Unit
MILLI0.001Unit
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A little trick
King
Hector
(usually)
Doesnt
Drink
Chocolate
Milk
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KILO1000Units
HECTO100Units
DEKA10Units
DECI0.1Unit
CENTI0.01Unit
MILLI0.001Unit
How do you use the ladder method?
4 km _________ m
1st Determine your starting point. 2nd Count
the jumps to your ending point. 3rd Move the
decimal the same number of jumps in the same
direction.
How many jumps does it take?
4.
4000 m
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Warm up

1. Read and complete the Analyzing Elements of the
   Scientific Method handout.
2. For the 6 questions at the bottom, underline,
   circle, or highlight the 1 word in each question
   that describes a step in the scientific method.

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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
10
Metric Abbreviations
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 ____
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Conversion Practice
1000 mg _______ g 1 L _______ mL 160 cm
_______ mm 14 km _______ m 109 g _______ kg
250 m ______ km
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Conversion Practice
13
Metric Conversion Challenge
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
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Warm up

1. Convert 5,720 km to cm.
2. Convert 23 mg to dag.

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Scientific Method

1. Find the Analyzing Elements of the Scientific
   Method handout.
2. Look at the 6 words you circled, underlined or
   highlighted yesterday.
3. List those words in the boxes on the back of the
   sheet and DRAW A PICTURE to represent at least 3
   of those steps in the scientific method.

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More conversions

1. Complete as many of the 25 practice problems as
   you can until Mrs. Lock stops the class.
2. Check your answers. Mark any that are incorrect
   with a colored pencil.
3. Turn in your sheet.
4. You may get an EXTRA COPY of the sheet if you
   want to practice at home.

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Warm up

1. Convert 5,720 cm to hm.
2. Convert 23 kg to dag.

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Measuring Length in Metric Units
Largest lines are centimeters
1
2
3
4
5
Smallest lines are millimeters
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Measuring Length in Metric Units
1
2
3
4
5
How big is the oval?
20
How many mm are found in 1 cm?
21
How long is the line segment in mm? How long is
the line segment in cm?
22
How long is the line segment in mm? How long is
the line segment in cm?
23
How long is the line segment in mm? How long is
the line segment in cm?
24
Practice
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13. 3
14. 1.6
15. 0.08
16. 0.85
17. 2000
18. 10,000
19. 0.00075
20. 0.0001
21. 0.075
22. 0.01
23. 10
24. 2500
25. 650
Answer
1. 0.05
2. 0.02
3. 3000
4. 2.5
5. 0.55
6. 0.67
7. 324
8. 0.61
9. 15
10. 420
11. 20
12. 0.55
Now
Check your answers again. Which ones do you want
to see me do on the board?