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[Pages:4]Lesson 2 Measurement and Scientific Tools

Scan Lesson 2. Read the lesson titles and bold words. Look at the pictures. Identify three facts you discovered about measurement and scientific tools. Record your facts in your Science Journal.

Description and Explanation

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Compare and contrast descriptions and explanations.

.

Description

Both

Explanation

have to do with

The International System of Units

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.

Identify the problem solved by the development of the International System of Units (SI).

Problem

Solution adoption by scientists of the International System of Units

Definition:

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

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. Interpret the meaning of SI measurements.

Measurement

kilometer millisecond microgram

Prefix

Meaning Quantity of Prefix Measured

.

Identify the SI units for these measurements.

Quantity Measured

Unit and Symbol

Quantity Measured

Unit and Symbol

Electric current

Substance amount

Temperature

Light intensity

Scientific Problem Solving NOS 5

Lesson 2 | Measurement and Scientific Tools (continued)

Measurement and Uncertainty

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Model accuracy and precision. The "bull's-eye" represents an

accepted value. .

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Draw

Three red dots that are both accurate and precise

One blue dot that is accurate

Three green dots that are neither accurate nor precise

Three black dots that are precise but not accurate

NOS 6 Scientific Problem Solving

Explain

Lesson 2 | Measurement and Scientific Tools (continued)

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.

Relate the precision of tools to certainty.

Tools with precision

provide measurements with

certainty.

Tools with precision

provide measurements with

certainty.

.

Assess the usefulness of scientific notation.

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

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.

Express each value in scientific notation.

Number

In Scientific Notation

234,000

.00067

842,700,000,000

.0000000111

.

Restate the percent error equation.

percent error =

Scientific Problem Solving NOS 7

Lesson 2 | Measurement and Scientific Tools (continued)

Scientific Tools

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.

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.

Additional Tools Used by

Physical Scientists

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Identify the uses of six scientific tools.

Tool

Science journal

Description of Use

Balance

Glassware

Thermometer

Calculator

Computer

Describe how physical scientists use these tools.

pH Paper

Stopwatch

Hot Plate

Some Tools Used by Physical Scientists

Spring Scale

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Connect It In November you notice that it seems to be darker in the morning when

you are getting ready for school. How can you use tools to make your observation more scientific and evaluate it?

NOS 8 Scientific Problem Solving

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