Chapter 1 measurements
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

Chapter 1 Measurements PowerPoint PPT Presentation


  • 31 Views
  • Uploaded on
  • Presentation posted in: General

Chapter 1 Measurements. Problem Solving fsUsing Conversion Factors. Initial and Final Units. 1. A person has a height of 2.0 meters. What is that height in inches? Initial unit = mFinal unit = _______

Download Presentation

Chapter 1 Measurements

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Chapter 1 measurements

Chapter 1Measurements

Problem Solving fsUsing Conversion Factors

LecturePLUS Timberlake


Initial and final units

Initial and Final Units

1. A person has a height of 2.0 meters. What is that height in inches?

Initial unit = mFinal unit = _______

2) Blood has a density of 0.05 g/mL. If a person lost 0.30 pints of blood at 18°C, how many ounces of blood would that be?

Initial = pintsFinal unit = _______

LecturePLUS Timberlake


How many minutes are in 2 5 hours

How many minutes are in 2.5 hours?

Initial unit

2.5 hr

Conversion Final

factor unit

2.5 hr x 60 min = 150 min

1 hr

cancel Answer (2 SF)

LecturePLUS Timberlake


Learning check

Learning Check

A rattlesnake is 2.44 m long. How long is the snake in cm?

1) 2440 cm

2)244 cm

3)24.4 cm

LecturePLUS Timberlake


Solution

Solution

A rattlesnake is 2.44 m long. How long is the snake in cm?

2)244 cm

2.44 m x 100 cm = 244 cm

1 m

LecturePLUS Timberlake


Learning check1

Learning Check

How many seconds are in 1.4 days?

Unit plan: days hr min seconds

1.4 days x 24 hr x ??

1 day

LecturePLUS Timberlake


Solution cf2

Solution CF2

Unit plan: days hr min seconds

2 SF Exact

1.4 day x 24 hr x 60 min x 60 sec

1 day 1 hr 1 min

= 1.2 x 105 sec

LecturePLUS Timberlake


Unit check

Unit Check

What iswrong with the following setup?

1.4 day x 1 day x 60 min x 60 sec

24 hr 1 hr 1 min

LecturePLUS Timberlake


Unit check1

Unit Check

1.4 day x 1 day x 60 min x 60 sec

24 hr 1 hr 1 min

Units = day2/hr2Not the final unit needed

LecturePLUS Timberlake


Learning check2

Learning Check

An adult human has 4650 mL of blood. How many gallons of blood is that?

Unit plan:mL qt gallon

Equalities:1 quart = 946 mL

1 gallon = 4 quarts

Your Setup:

LecturePLUS Timberlake


Solution1

Solution

Unit plan:mL qt gallon

Setup:

4650 mL x 1 qt x 1 gal = 1.23 gal

946 mL 4 qt

3 SF 3 SF exact 3 SF

LecturePLUS Timberlake


Steps to problem solving

Steps to Problem Solving

  • Read problem

  • Identify data and Units

  • Write down a unit plan from the initial unit

    to the desired unit

  • Select conversion factors

  • Change initial unit to desired unit

  • Cancel units and check

  • Do math on calculator

  • Give an answer using significant figures

LecturePLUS Timberlake


Learning check3

Learning Check

If the ski pole is 3.0 feet in length, how long is the ski pole in mm?

LecturePLUS Timberlake


Solution2

Solution

3.0 ft x 12 in x 2.54 cm x 10 mm =

1 ft 1 in. 1 cm

LecturePLUS Timberlake


Learning check4

Learning Check

If your pace on a treadmill is 65 meters per minute, how many seconds will it take for you to walk a distance of 8450 feet?

LecturePLUS Timberlake


Solution3

Solution

Initial

8450 ft x 12 in. x 2.54 cm x 1 m

1 ft 1 in. 100 cm

x 1 min x 60 sec = 2400 sec

65 m 1 minfinal (2 SF)

LecturePLUS Timberlake


  • Login