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Chapter One: Measurement

Chapter One: Measurement. 1.1 Measurements 1.2 Time and Distance 1.3 Converting Measurements 1.4 Working with Measurements. 1.2 Time and Distance. Two ways to think about time: What time is it? How much time? A quantity of time is also called a time interval. 1.2 Time.

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Chapter One: Measurement

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  1. Chapter One: Measurement • 1.1 Measurements • 1.2 Time and Distance • 1.3 Converting Measurements • 1.4 Working with Measurements

  2. 1.2 Time and Distance • Two ways to think about time: • What time is it? • How much time? • A quantity of time is also called a time interval.

  3. 1.2 Time • Time comes in mixed units. • Seconds are very short. • For calculations, you may need to convert hours and minutes into seconds. How many seconds is this time interval?

  4. 1.2 Distance • Distance is the amount of space between two points. • Distance is measured in units of length. • The meter is a basic SI distance unit. In 1791, a meter was defined as one ten-millionth of the distance from the North Pole to the equator. What standard is used today?

  5. 1.2 Metric prefixes • Prefixes are added to the names of basic SI units such as meter, liter and gram. • Prefixes describe very small or large measurements.

  6. 1.3 Converting units • To convert 1,565 pennies to the dollar amount, you divide 1,565 by 100 (since there are 100 pennies in a dollar). • Converting SI units is just as easy as converting pennies to dollars.

  7. Solving Problems • Convert 655 mm to m • Looking for: • …the distance in meters • Given: • …distance = 655 millimeters • Relationships: • Ex. There are 1000 millimeters in 1 meter • Solution: 655 mm = .655 meters

  8. Solving Problems Convert 142 km to m • Looking for: • …the distance in meters • Given: • …distance = 142 kilometers • Relationships: • Ex. There are ? meters in 1 kilometer? • Solution: • Use the conversion tool.

  9. Solving Problems Convert 754,000 cm to km • Looking for: • …the distance in kilometers • Given: • …distance = 754,000 centimeters • Relationships: • Ex. There are ? cm in 1 m? • There are ? m in 1 km? • Solution: • Use the conversion tool.

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