| |
Student Edition
0-13-062645-7
Corrections of factual errors.
| Page |
Location |
Original |
Revision |
Date Posted |
|
39
|
Real-World Lab, Procedure |
"10. Note..." |
"10. Note...
11. Discard the solution as directed by your teacher, and wash your hands." |
15-Aug-2001 |
|
57
|
par. 2, lines 3–4 |
"...size? Think back to Boyle's law. When..." |
"...size? When..." |
23-Jan-2002 |
|
84
|
Exploring the Periodic Table, col. 3, row 7, line 4 |
"227.028" |
"(227)" |
15-Aug-2001 |
|
84
|
Exploring the Periodic Table, element 93, line 4 |
"237.048" |
"(237)" |
15-Aug-2001 |
|
85
|
Exploring the Periodic Table, element 103, line 4 |
"(260)" |
"(262)" |
15-Aug-2001 |
|
85
|
Exploring the Periodic Table, element 112, line 4 |
"(272)" |
"(277)" |
12-Nov-2001 |
|
92
|
par. 1, lines 4–5 |
"...hard, bright white,..." |
"...hard, gray-white,..." |
11-Nov-2001 |
|
93
|
Fig. 14 art, actinium data, last line |
"227.028" |
"(227)" |
15-Aug-2001 |
|
145
|
par. 2, lines 9–10 |
"...[water formula] particles undergo..." |
"...[water formula] molecules undergo..." |
10-Nov-2001 |
|
150
|
Skills Lab, Data Table, col. 1, row #2 |
"Sugar" |
"Sugar + heat" |
15-Aug-2001 |
|
167
|
col. 1, #8, line 4 |
"...within 30 seconds, record..." |
"...within 2 minutes, record..." |
15-Aug-2001 |
|
201
|
par. 3, last line |
"...and their concentration." |
"...and their concentration. Hydrochloric acid is more acidic (has a lower pH) than acetic acid. But a concentrated (strong) solution of acetic acid can have a lower pH than a dilute (weak) solution of hydrochloric acid. To safely handle acids and bases, you need to know the pH of the solutions you are using." |
15-Aug-2001 |
|
223
|
Fig. 12 caption, line 4–7 |
"...to ripen (left). Acetylene...pipeline (right)." |
"...to ripen." |
11-Nov-2001 |
|
223
|
Fig. 12 caption, structural formulas |
ethene and acetylene formulas |
Remove acetylene formula. |
15-Aug-2001 |
|
223
|
Fig. 12 photographs |
Welder photograph |
Remove welder photograph. |
15-Aug-2001 |
|
305
|
Sample Problem |
photograph |
Delete photograph. |
23-Jan-2002 |
|
366
|
par. 3, line 2 |
"...small kite to..." |
"...small bird to..." |
10-Nov-2001 |
|
540
|
par. 1, line 8 |
"...such as a spoon, into..." |
"...such as aluminum foil, into..." |
10-Nov-2001 |
|
550
|
par. 2, line 5 |
"...gives a golden yellow light..." |
"...gives a pale pink light..." |
15-Aug-2001 |
|
557
|
par. 2, line 5 |
"...antenna. About half of..." |
"...antenna. The majority of..." |
10-Nov-2001 |
|
593
|
par. 2, line 5 |
"...objective lens, placed..." |
"...objective, placed..." |
10-Nov-2001 |
|
593
|
par. 2, lines 8–9 |
"...objective lens so..." |
"...objectives so..." |
10-Nov-2001 |
|
598
|
Fig. 30 art |
No object image should appear on the photographic film. |
Corrected Figure 30 Art |
18-Dec-2001 |
|
601
|
Section 5, Key Terms, col. 1, line 3 |
"objective lens" |
"objective" |
10-Nov-2001 |
|
767
|
List of Chemical Elements, Ununbium, Atomic Mass |
"(272)" |
"(277)" |
10-Nov-2001 |
|
767
|
List of Chemical Elements, various elements, Atomic Mass |
Actinium: "227.028"
Bohrium: "(262)"
Lawrencium: "(260)"
Meitnerium: "(266)"
Neptunium: "237.048" |
Actinium: "(227)"
Bohrium: "(264)"
Lawrencium: "(262)"
Meitnerium: "(268)"
Neptunium: "(237)" |
24-Aug-2001 |
|
768�769
|
Periodic Table of the Elements, various elements, line 4 |
Actinium: "227.028"
Bohrium: "(262)"
Lawrencium: "(260)"
Meitnerium: "(266)"
Neptunium: "237.048" |
Actinium: "227.028"
Bohrium: "(264)"
Lawrencium: "(262)"
Meitnerium: "(268)"
Neptunium: "(237)" |
24-Aug-2001 |
|
773
|
eyepiece, line 2 |
"...objective lens. (p.592)" |
"...objective. (p.592)" |
10-Nov-2001 |
|
776
|
col. 2 |
"mass number...
mechanical advantage..." |
"mass number...
matter Anything that has mass and occupies space. (p. 18)
mechanical advantage..." |
15-Aug-2001 |
|
777
|
col. 2 |
"objective lens Lens..." |
"objective Lens..." |
10-Nov-2001 |
|
785
|
col. 1 |
"eyepiece lens 592, 593" |
"eyepiece 592, 593" |
15-Aug-2001 |
|
786
|
col. 1 |
"halogen compounds 224" |
"halogen-containing compounds 224" |
15-Aug-2001 |
|
788
|
col. 3 |
"objective lens 592, 593" |
"objective 592, 593" |
10-Nov-2001 |
Corrections of typographical or grammatical errors.
| Page |
Location |
Original |
Revision |
Date Posted |
|
38
|
Real-World Lab, col. 1, line 4 |
"...electrolysis to isolate..." |
"...electrolysis procedure to isolate..." |
15-Aug-2001 |
|
39
|
Real-World Lab, col. 1, #6, line 2, and #7, line 1 |
"...run for 2–3 minutes..." |
"...run 2–3 minutes..." |
11-Nov-2001 |
|
210
|
#4, lines 3–5. |
"a. tap water
b. salt water
c.ammonia cleaner" |
Add periods:
"a. tap water.
b. salt water.
c.ammonia cleaner." |
10-Nov-2001 |
|
223
|
par. 1, lines 1–2 |
"...section, you have seen structural formulas of molecules with only..." |
"...section, structural formulas have shown only..." |
11-Nov-2001 |
|
253
|
col. 2, #3 and #4, line 1 |
"Which polymer, or polymers, would..." |
"Which polymer would..." |
15-Aug-2001 |
|
258
|
Fig. 9, col. 2, row 8 |
"Tin, antimony, copper*" |
Delete asterisk:
"Tin, antimony, copper" |
13-Dec-2001 |
|
258
|
Fig. 9, col. 4, row 8 |
"Tableware, decorative objects" |
Insert asterisk:
"Tableware*, decorative objects" |
13-Dec-2001 |
|
367
|
Exploring Wings, line 1 |
"...principle can help explain..." |
"...principle helps explain..." |
10-Nov-2001 |
|
545
|
par. 3, lines 7–8 |
"...and soft tissues and cause the..." |
"...and soft tissues, causing the..." |
11-Nov-2001 |
|
561
|
par. 3, last line |
"...turn right or left." |
"...turn." |
10-Nov-2001 |
|
592
|
par. 3, last line |
"...down also." |
"...down." |
10-Nov-2001 |
|
618
|
par. 1, line 2 |
"...everyday,..." |
"...every day,..." |
10-Nov-2001 |
|
767
|
List of Chemical Elements, Name col. |
"Ununnilium...
Unununium...
Ununoctium..." |
"Ununnilium...
Ununoctium...
Unununium..." |
15-Aug-2001 |
|
786
|
col. 2 |
"Hindenburg (airship) 162" |
"Hindenburg (airship) 161" |
15-Aug-2001 |
Changes for clarification.
| Page |
Location |
Original |
Revision |
Date Posted |
|
6
|
Developing Hypotheses, par. 1, lines 5–6 |
"...for observations that relate to..." |
"...for a set of observations or answer to..." |
10-Nov-2001 |
|
18
|
par. 2, lines 1–2 |
"...however, the word matter has...meaning. Matter is..." |
"...however, it has...meaning. Matter is anything that has mass and takes up space. It is..." |
11-Nov-2001 |
|
38
|
par. 1 |
"A method that's commonly used...such as a battery." |
"Many steps are involved in obtaining copper from its ores. The last step in the process is called electrolysis. This term literally means 'electric cutting.' In one kind of electrolysis, a copper compound is dissolved in water, forming a mixture called a solution. Two metal strips called electrodes are placed in the copper compound solution. Each electrode is attached to a wire, and the wires are connected to a source of electric current, such as a battery." |
15-Aug-2001 |
|
38
|
par., line 6 |
"...solution. Each..." |
"...solution, not touching each other. Each..." |
10-Nov-2001 |
|
39
|
par. 1 |
"...is turned on,...amounts of copper metal." |
"...is turned on, one electrode in the solution becomes coated with copper metal. At the same time, other materials form on the second electrode. In a laboratory, electrolysis yields only small amounts of copper metal. In industry, the isolation of copper from its ores happens on a huge scale and involves several complex steps. Because many copper compounds do not dissolve in water, the method of electrolysis used in the last step can vary." |
24-Aug-2001 |
|
58
|
par. 2, line 7 |
"...grow at the same rate. In..." |
"...grow by the same amount. In..." |
10-Nov-2001 |
|
165
|
par. 3, line 7 |
"...it was ignited. This..." |
"...it was detonated. This..." |
15-Aug-2001 |
|
182
|
par. 4, line 3 |
"...considerably. Instead. they form..." |
"...considerably. They form..." |
21-Dec-2001 |
|
182
|
par. 4, lines 2–3 |
"...the molecules stop moving about. Instead,..." |
"...the movement of molecules slows considerably. Instead,..." |
10-Nov-2001 |
|
208
|
par. 1, line 1 |
"Why does your stomach have such a low pH? The..." |
"The low pH in your stomach helps digestion take place. The..." |
15-Aug-2001 |
|
220
|
par. 4, line 2 |
"Methane, also known as natural gas,..." |
"Methane, the main gas in natural gas,..." |
15-Aug-2001 |
|
286
|
par. 1, lines 5–6 |
"...travels in one unit..." |
"...travels per unit..." |
17-Dec-2001 |
|
367
|
Airplane Wings, lines 1–3 |
"...of an airplane...wing. As a result, the..." |
Change reference to the specific wing illustrated, and remove causation, respectively:
"...of this airplane...wing. Also, the..." |
10-Nov-2001 |
|
367
|
Bird Wings, line 1 |
"Like an airplane wing, a..." |
"Like the airplane wing above, a..." |
10-Nov-2001 |
|
367
|
Spoilers, line 2 |
"...is an upside-down wing. The..." |
"...is an upside-down version of the airplane wing above. The..." |
10-Nov-2001 |
|
375
|
last par., last line |
"...does not help pull." |
"...does not help pull the sled forward." |
15-Aug-2001 |
|
392
|
par. 2, lines 4–5 |
"...The larger object is called the wheel and the smaller object is called..." |
"...The object with the larger diameter is called the wheel and the object with the smaller diameter is called..." |
11-Nov-2001 |
|
412
|
par. 3, lines 4–5 |
"...in an object. When..." |
"...in a substance or material. When..." |
11-Nov-2001 |
|
416
|
par. 2, lines 4–6 |
"The waterfall is...lines. The falling water is..." |
"The Niagra Falls area is...lines. Water that is diverted above the falls is..." |
21-Dec-2001 |
|
438
|
par. 3, lines 1–2 |
"...in a substance is called..." |
"...in a substance or material is called..." |
11-Nov-2001 |
|
438
|
par. 4, line 5 |
"...individual particles. Thermal..." |
"...individual particles of matter. Thermal..." |
15-Aug-2001 |
|
440
|
Fig. 5 caption, line 3 |
"...touches the hot coals." |
"...touches the hot forge." |
15-Aug-2001 |
|
440
|
par. 4, line 2 |
"...from the fire. This..." |
"...from the forge. This..." |
15-Aug-2001 |
|
450
|
par. 4, lines 1–2 |
"...and the neon in the colored sign shown above are..." |
"...and the neon used in colored signs are..."
|
11-Nov-2001 |
|
454
|
Fig. 17 art labels |
"Uncoiled bimetallic...
Coiled bimetallic..." |
"Uncurved bimetallic...
Curved bimetallic..." |
13-Dec-2001 |
|
455
|
par. 1, last two lines |
"...probably only see a coal-burning locomotive as a..." |
"...probably see a steam locomotive only as a..." |
10-Nov-2001 |
|
455
|
par. 2, line 1 |
"To power a steam locomotive,..." |
"To power a coal-burning steam locomotive,..." |
13-Dec-2001 |
|
458
|
par. 3, last two lines |
"...the compressor motor, and..." |
"...the compressor, and..." |
15-Aug-2001 |
|
458
|
par. 3, line 2 |
"...refrigerator motor compresses..." |
"...refrigerator motor runs a compressor that compresses..." |
15-Aug-2001 |
|
509
|
Fig. 13 caption, line 6 |
"...this barrier, causing..." |
"...this barrier (C), causing..." |
15-Aug-2001 |
|
509
|
Fig. 13 caption, lines 2–4 |
"...of sound, waves...the sound barrier. When..." |
"...of sound (A), waves...the sound barrier (B). When..." |
11-Nov-2001 |
|
536
|
par. 1, line 3 |
"...a vacuum. You can also think of this as..." |
"...a vacuum. This rate can also be expressed as..." |
10-Nov-2001 |
|
536
|
par. 1, lines 5–6 |
"...8 minutes. Nothing can travel faster! When..." |
"...8 minutes. When..." |
10-Nov-2001 |
|
539
|
par. 3, line 3 |
"...This allows the tuner to pick up..." |
"...This makes the tuner pick up..." |
10-Nov-2001 |
|
541
|
par. 3, last line |
"...brain and spine disorders." |
"...brain and spine disorders of soft tissue near the spine." |
15-Aug-2001 |
|
541
|
par. 3, lines 4–10 |
"...MRI. An MRI...including the brain. The pictures..." |
"...MRI. A person is placed in an MRI machine that produces strong magnetic fields, causing the body's atoms to line up in one direction. The machine then gives out short bursts of radio waves that knock the atoms out of alignment. As the atoms realign, data is produced. A computer analyzes this data and creates pictures of the internal body organs. The pictures..." |
11-Nov-2001 |
|
542
|
par. 2, line 5 |
"...light waves than..." |
"...light than..." |
15-Aug-2001 |
|
543
|
Exploring the Electromagnetic Spectrum art, rainbow |
pink color on the long-wavelength side of the rainbow |
Remove pink color on the long-wavelength side of the rainbow. |
15-Aug-2001 |
|
544
|
Checkpoint |
"What are the colors of the visible spectrum?" |
"What colors make up the visible spectrum?" |
15-Aug-2001 |
|
544
|
Fig. 11 caption, lines 6–8 |
"...interference produces some of the colors of the visible spectrum." |
"...interference removes some of the colors of visible light and leaves others for us to see." |
11-Nov-2001 |
|
545
|
par. 4, last line |
"...from entering the body." |
"...from reaching your body." |
15-Aug-2001 |
|
546
|
par. 3, lines 6–7 |
"...galaxies could produce these gamma rays. Some gamma-ray telescopes also detect..." |
"...galaxies are one way of producing these gamma rays. Gamma-ray telescopes have also been used to detect..." |
10-Nov-2001 |
|
549
|
par. 6, line 3 |
"...electricity, which..." |
"...electricity for the same brightness, which..." |
15-Aug-2001 |
|
551
|
par. 2, line 3 |
"...little electricity. They..." |
"...little electricity for the amount of light they give off. They..." |
10-Nov-2001 |
|
560
|
par. 3 |
"In recent years,...cellular telephone system." |
Revised Page 560 Paragraph |
03-Dec-2001 |
|
561
|
par. 2, line 6 |
"...more powerful, the dishes..." |
"...more powerful, and as ways to greatly compress the data have been developed, the dishes..." |
10-Nov-2001 |
|
561
|
par. 2, lines 6–7 |
"...to receive them have become a lot smaller. Also, modern...powerful." |
"...to receive the signals have become a lot smaller." |
10-Nov-2001 |
|
561
|
par. 4, lines 1–3 |
"Today, GPS receivers are becoming increasingly common in...and even in cars..." |
"GPS systems have grown more sophisticated. Today, receivers are increasingly common in...and even cars..." |
10-Nov-2001 |
|
571
|
Fig. 1 caption, line 7 |
"...The frog can..." |
"...The frog's image can..." |
15-Aug-2001 |
|
589
|
Fig. 23 caption, lines 2–3 |
"...in place contract or relax to change..." |
"...in place relax (left) or contract (right) to change..." |
11-Nov-2001 |
|
592
|
par. 2, line 7 |
"...is the eyepiece. The eyepiece magnifies..." |
"...is the eyepiece. The eyepiece magnifies..." |
15-Aug-2001 |
|
592
|
par. 2, line 7 |
"...The lens in the eyepiece..." |
"...The eyepiece..." |
10-Nov-2001 |
|
592
|
par. 2, line 8 |
"...through a refracting telescope is..." |
"...through the refracting telescope in Figure 25 is..." |
15-Aug-2001 |
|
592
|
par. 2, lines 4–5 |
"...The larger lens is called the objective lens. The objective lens gathers..." |
"...The larger lens is called the objective. The objective gathers..." |
10-Nov-2001 |
|
593
|
Fig. 26 labels |
"Eyepiece lens
Objective lens" |
"Eyepiece
Objective" |
10-Nov-2001 |
|
598
|
par. 2, last three lines |
"...pattern between the two beams of light creates a three-dimensional image that is recorded on the film." |
"...pattern recorded on the film produces a three-dimensional image when viewed in laser light." |
15-Aug-2001 |
|
600
|
Section 5 Review, #6, lines 2–3 |
"Do you think...your answer." |
"Laser beams can severely damage eyes and skin. Explain why you think this is so." |
11-Nov-2001 |
|
657
|
par. 5, lines 4–5 |
"...two paths, it will travel through the one with the lower resistance." |
"...two paths, more of the current will travel through the path with lower resistance." |
11-Nov-2001 |
|
774
|
col. 2 |
"fullerene A form...a repeating pattern similar to...ball. (p.217)" |
"fullerene A form...a repeating pattern. (p.217)" |
15-Aug-2001 |
|
780
|
col. 2 |
"thermal energy The total energy of a substance's particles..." |
"thermal energy The total energy of a substance's or material's particles..." |
15-Aug-2001 |
Teacher's Edition
0-13-062649-X
Corrections of factual errors.
| Page |
Location |
Original |
Revision |
Date Posted |
|
151
|
Sample Data Table, col. 1, #2 |
"sugar" |
"sugar + heat" |
02-Oct-2001 |
|
264
|
Section 3 Review Answers, #2, line 1 |
"...other chemicals to..." |
"...other materials to..." |
02-Oct-2001 |
|
279
|
Reading Strategies, col. 2, second bullet |
"Owen, Kenneth..." |
Delete bullet and text. |
02-Oct-2001 |
|
500
|
The Speed of Sound, Using the Visuals: Figure 4, lines 45 |
"...(1.7 km = 1,700 m; 1,700 m w 340 m/s = 5 s)" |
"...(1.71 km = 1,710 m; 1,710 m w 342 m/s = 5 s)" |
02-Oct-2001 |
|
526
|
Building Inquiry Skills: Calculating, lines 5–7 |
"...water, 1,531 m/s, in their...1,531 m/s = 6,227.1 m)..." |
"...water, 1,530 m/s, in their...1,530 m/s = 6,273 m)..." |
02-Oct-2001 |
|
550
|
Using the Visuals: Figure 17, line 4 |
"...yellow—helium;..." |
"...pale pink—helium;..." |
02-Oct-2001 |
|
550
|
Using the Visuals: Figure 17, lines 1–2 |
"...identify the gases used to produce each color of the light shown. (Red—..." |
"...identify some of the gases that may have been used to produce the colors in the sign. (Red—..." |
02-Oct-2001 |
|
589
|
Try This, Observing, line 3 |
"...of the page." |
"...of the flag." |
02-Oct-2001 |
|
593
|
Building Inquiry Skills: Observing, lines 3–8 |
"...the objective lens, eyepiece,...many objective lenses does...three objective lenses; they..." |
"...the objectives, eyepiece,...many objectives does...three objectives; they..." |
12-Dec-2001 |
|
600
|
Section 5 Review Answers, #6, line 1 |
"Yes. Laser beams..." |
"Laser beams..." |
02-Oct-2001 |
|
668
|
Demonstration, line 7 |
"...using the light..." |
"...using two light..." |
02-Oct-2001 |
|
708b
|
Media and Technology col., Sec. 22-2 row, line 5 |
"...Radio;" |
"...Radio Waves;" |
02-Oct-2001 |
|
723
|
Media and Technology, line 2 |
"Receiving Radio,' Transparency 93" |
"Receiving Radio Waves,' Transparency 93" |
02-Oct-2001 |
Corrections of typographical or grammatical errors.
| Page |
Location |
Original |
Revision |
Date Posted |
|
2
|
Nature of Science, first bullet, line 4 |
"...Backgrounds..." |
"...Background..." |
07-Dec-2001 |
|
55
|
Answers to Self-Assessment, Caption Question, line 1 |
"...More collision means more..." |
"...More collisions mean more..." |
23-Jan-2002 |
|
77
|
The Role of Electrons notes, line 7 |
"(Just like the fan blades,..." |
"(Like the fan blades,..." |
07-Dec-2001 |
|
264
|
Section 3 Review Answers, #1, line 1 |
"...are heat resistant and..." |
"...are heat-resistant and..." |
02-Oct-2001 |
|
500
|
Building Inquiry Skills: Interpreting Illustrations, lines 56 |
"...and light, ask: Imagine that the dog were holding..." |
"...and of light, ask: Imagine that the dog is holding..." |
02-Oct-2001 |
|
500
|
Building Inquiry Skills: Making Models, line 7 |
"...partners hold..." |
"...partners each hold..." |
02-Oct-2001 |
|
549
|
Answers to Self-Assessment, Caption Question, line 2 |
"...as heat." |
"...as heat" |
02-Oct-2001 |
|
550
|
Building Inquiry Skills: Comparing and Contrasting, line 2 |
"...students slowly bring..." |
"...students bring..." |
02-Oct-2001 |
|
550
|
Building Inquiry Skills: Comparing and Contrasting, line 4 |
"...hot very quickly. Do not..." |
"...hot. Do not..." |
02-Oct-2001 |
|
581
|
Activating Prior Knowledge, lines 6–8 |
"...that this is true. Explain...how colors mix." |
"...that the light appears white in the overlap region. Explain...how colors of lights and colors of pigments mix." |
02-Oct-2001 |
|
596
|
Background, col. 1, line 4 |
"...opthalmologist..." |
"...ophthalmologist..." |
02-Oct-2001 |
|
668
|
Background, par. 2, line 1 |
"In 1996, an U.S. company..." |
"In 1996, a U.S. company..." |
02-Oct-2001 |
|
722
|
Including All Students, line 12 |
"...or further apart.)" |
"...or farther apart.)" |
07-Dec-2001 |
Changes for clarification.
| Page |
Location |
Original |
Revision |
Date Posted |
|
49
|
Integrating Earth Science, line 4 |
"...volcano depends in part on the..." |
"...volcano is related to the..." |
02-Oct-2001 |
|
56
|
Background, col. 2, lines 59 |
"...slow, expensive to build and maintain, and the gases...ignited." |
"...slow, and expensive to build and maintain. In addition, the gas hydrogen is flammable. The hydrogen that lifted airships such as the Hindenburg burned rapidly when ignited." |
02-Oct-2001 |
|
95
|
Panel Discussion, first bullet, lines 46 |
"...Consult the Science Explorer Web site at www.phschool.com for..." |
"...Consult the World Wide Web for..." |
07-Dec-2001 |
|
151
|
Sample Data Table, col. 1, #1, line 1 |
"sodium carbonate..." |
"sodium carbonate powder..." |
02-Oct-2001 |
|
161
|
In Your Journal notes, line 5 |
"...explain the how of the..." |
"...explain how a chemical reaction affected the..." |
02-Oct-2001 |
|
366
|
Inquiry Challenge, Tips, lines 2–3 |
"...gliders that use...to fly. Assign each..." |
"...gliders. Assign each..." |
07-Dec-2001 |
|
367
|
Exploring Wings notes, lines 3–6 |
"(air) Ask: Why is the top...that travels farther? (It increases.) Ask:..." |
"(air) Ask: How does the force exerted by the air on the top of the wing compare with the force exerted by the air on the bottom of the wing when the airplace takes off? (It is less.) Ask:..." |
07-Dec-2001 |
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511
|
Ongoing Assessment, lines 4–6 |
"...violin and a piano. (The timbre of the instruments is different because they produce..." |
"...violin than when played on a piano. (The timbres of the instruments are different, because the instruments produce..." |
07-Dec-2001 |
|
549
|
Answers to Self-Assessment, Checkpoint, line 2 |
"...less electricity. They also..." |
"...less electricity than incandescent bulbs for the same amount of light. They also..." |
02-Oct-2001 |
|
581
|
Activating Prior Knowledge, lines 3–4 |
"...you place a piece of blue cellophane over the yellow. (Most..." |
"...you shine the light from a flashlight covered with a blue filter so that it overlaps the projected light. (Most..." |
02-Oct-2001 |
|
583
|
Sharpen your Skills, Expected Outcome, lines 1–2 |
"...should see green light as..." |
"...should see the color of the wheel as green as..." |
02-Oct-2001 |
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