Download presentation

Presentation is loading. Please wait.

1
**DIFFICULTY OF THE IMPERIAL UNITS?**

2
**DIFFICULTY OF THE IMPERIAL UNITS**

One inch is usually divided into 8, 10 or 16 parts: This particular ruler has 16 divisions

3
**DIFFICULTY OF THE IMPERIAL UNITS**

One inch is usually divided into 8, 10 or 16 parts: So, the smallest division = 1/16th of an inch

4
**What is the length of the pencil?**

One inch is usually divided into 8, 10 or 16 parts: So, the smallest division = 1/16th of an inch

5
**One inch is usually divided into 8, 10 or 16 parts:**

What is the length of the pencil? One inch is usually divided into 8, 10 or 16 parts:

6
Videoclip

7
**1.3 Relating SI and Imperial Units**

Copyright © 2010 Ryan P. Murphy

8
**Copyright © 2010 Ryan P. Murphy**

9
**I will show you these 6 pictures showing you their metric values.**

Mph (Miles per hour) Gallon Pounds Yards Fahrenheit Inches

10
**One gallon of milk = 3.78 liters of milk**

11
**65 mph = 104 km/h Copyright © 2010 Ryan P. Murphy**

12
**Double Quarter Pounder(0.5 pound) = 0.226 kg**

13
**48 inches tall = 1.22 meters tall**

Copyright © 2010 Ryan P. Murphy Copyright © 2010 Ryan P. Murphy

14
1 Yards = meters Copyright © 2010 Ryan P. Murphy

15
**80 degrees Fahrenheit = 26.7 degrees Celsius**

Copyright © 2010 Ryan P. Murphy

16
The International System (System Internationale ‘unites) of Units (SI) also known as THE METRIC SYSTEM.

17
**It is used by scientists all over the world**

18
**The Metric System: A measurement system based on the powers of ten.**

Copyright © 2010 Ryan P. Murphy

19
**POWERS OF TEN HAVE PREFIXES**

Copyright © 2010 Ryan P. Murphy

20
YOU MUST KNOW THEM!!! Copyright © 2010 Ryan P. Murphy

21
**Only one unit of measurement for each quantity**

The simplicity of the Metric System? For example: LENGTH: meter MASS: gram VOLUME: liter Only one unit of measurement for each quantity Copyright © 2010 Ryan P. Murphy

22
**You can measure the very small and the very large with the same unit**

meter Copyright © 2010 Ryan P. Murphy

23
**The measurements below are all the same.**

“I am mm tall.” “I am cm tall.” “I am meters tall.” “I am km tall.” Compare it with Imperial System Copyright © 2010 Ryan P. Murphy

24
**Only one unit of measurement for each quantity**

The simplicity of the Metric System? SI For example: LENGTH: meter MASS: gram VOLUME: liter Only one unit of measurement for each quantity Imperial For example: LENGTH: mile, yard, foot/feet, inch… MASS: grain (≈0.65g), drachm (1.77 g), pound (453 g)… VOLUME: ounce (0.028 L), gill (0.142 L), gallon (4.55 L)… Copyright © 2010 Ryan P. Murphy

25
**Dimensional Analysis and Conversion factors**

26
**We can do this using 2 methods:**

Any quantity we measure,(length, mass, volume…) consists of a number and unit 22.2 m If we are given a quantity in one type of unit, and we want another type of unit : 22.2 m = ? ft We must convert the units We can do this using 2 methods:

27
OR

31
**A relationships between any quantities can be expressed by CONVERSION FACTORS**

32
**A relationships between any quantities can be expressed by CONVERSION FACTORS**

33
EXAMPLE #1 Convert 21.5 inches to cm!

34
**EXAMPLE #1 Convert 21.5 inches to cm!**

Step 1: Write conversion factors for inches and cm Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity (inches in our case) Step 3: Multiply, cancel and check the units

35
Convert 21.5 inches to cm! Step 1: Write conversion factors for inches and cm

36
Convert 21.5 inches to cm! Step 1: Write conversion factors for inches and cm Step 2: Choose a conversion factor which will allow you to cancel units of a given quantity (inches in our case)

37
**Step 3: Multiply, cancel and check the units**

Convert 21.5 inches to cm! Step 3: Multiply, cancel and check the units 𝟏 𝒊𝒏𝒄𝒉 𝟐.𝟓𝟒 𝒄𝒎 NO! 21.5 inches x 𝟐.𝟓𝟒 𝒄𝒎 𝟏 𝒊𝒏𝒄𝒉 YES! 21.5 inches x 1 𝑖𝑛𝑐ℎ 2.54 𝑐𝑚 𝑐𝑚 1 𝑖𝑛𝑐ℎ

38
**1 step metric conversion**

EXAMPLE #1 Convert 21.5 inches to cm! 1 step metric conversion

39
**A Canadian football field is approximately 59 m wide**

A Canadian football field is approximately 59 m wide. What is this measurement to the nearest foot? Use both of the methods of conversion. a) 192 ft. a) 192 ft.

40
**Nora knows that she is 5 ft. 7 in. tall.**

a) What height in centimetres will she list on her driver’s license application? Use both of the methods of conversion. a) 170 cm

41
HOMEWORK Pages: 22 – 23 Problems: 4 – 14 (all even)

42
Convert 6.32 µm to km Convert to a base unit (need 2 conversion factors) and from the base unit

43
Convert 6.32 µm to km Insert the values for 1 µm and 1 km

44
Convert 6.32 µm to km Cancel the units and do the math

Similar presentations

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on acid-base titration indicator Ppt on information and communication technology in education Ppt on cse related topics based Slides for ppt on android Ppt on breadth first search and depth first search Ppt on grease lubrication pump Ppt online templates Download ppt on oxidation and reduction practice Ppt on biography of albert einstein Download ppt on algebra for class 6