We live in the Milky Way, one of the billions of galaxies that make up the universe. Humans need and like a variety of foods; biodiversity can help improve food crops and provide useful materials and important medicines. Answers may vary. Its atomic number is 1. Vocabulary Review (page 125)
1. magnetic domain (1/1)
2. motor (5/2)
3. electromagnet (4/2)
4. aurora (4/2)
5. generator (4/2)
6. transformer (4/2)
7. magnetic field (2/1)
8. alternating (4/2)
9. magnetosphere (1/3)
Part B. 10. a. The solution is cooled slowly, leaving the excess
solute still in the solution. Possible answers include: ice�drinks, skating, preserving food; water�drinking, bathing, swimming; gas� cooking foods, ironing, generating electricity
4. Ceramics and polymers vary widely in their
chemical composition. Earth is in the Milky Way galaxy. Section 2 (page 2)
1. Deposition (3/2)
12. (1/1)
3. Section 2 (page 59)
1. isotope
2. atomic number
3. mass number
4. average atomic mass
5. nucleus
6. archaeologist
7. transmutation
8. americium
9. alpha particle
10. half-life
11. beta particle
12. radioactive decay
13. thyroid
14. strong nuclear
Key Terms (page 60)
Chapter Review
Part A. Photosynthesis Virtual Lab Site 1: Glencoe Photosynthesis Lab Site: bit.ly/pholab Experiment Question: "Which colors of the light spectrum are most important for plant growth?" This simulation allows you to manipulate many variables. A theory is an explanation based on many
observations. Physical changes change the way something
looks, but the substance stays the same. (1, 3/1)
18. 4. alpha particle ejection, and beta particle emission
5. Students should draw a box around the Actinides. The pH scale is used to compare the relative
strength of acids and bases. Lamarck
2. 5. In a cathode-ray tube, the particles originate at
the cathode and move toward the anode. 9. Living things take in and use energy. 3. Extinction
14. human
15. ecosystem
Section 2 (page 23)
1. g
2. e
3. d
4. f
5. a
6. c
7. b
8. h
9. a. to protect a species from harm
b. to protect habitat of a species
Key Terms (page 24)
1. extinct
2. endangered
3. threatened
4. introduced
5. native
6. acid rain
7. ozone
8. conservation
9. restoration
10. biodiversity
11. captive
Chapter Review
Part A. Newtons
Key Terms (page 116)
1. net force
2. force
3. friction
4. acceleration
5. normal force
6. third law
7. second law
8. inertia
Chapter Review
Part A. �! 3 4 7 � � � � 1
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11. Living things reproduce. F
12. Living things are made up of one or more cells, use energy, move, respond to their environment, reproduce, grow, develop, adapt, and have a life span. The star�s core, if it�s not too large,
becomes a neutron star. 6. 1,000 (5/2)
6. Our short video lessons are ⦠The fossil record is incomplete because not
every living thing does or can become fossilized. �! 1. 1/1 4. The temperature levels off at the boiling point as the water changes into water vapor. � Vocabulary Review (page 17)
1. evolution (1/1)
2. species (1/1)
3. variation (2/1)
4. natural selection (1/1)
5. gradualism (3/1)
6. fossils (4/2)
7. sedimentary (4/2)
8. relative dating (5/2)
9. embryology (6/2)
10. vestigial structure (6/2)
11. homologous (6/2)
12. punctuated equilibrium (3/1)
13. radioactive element (5/2)
Part B. Site 1: Glencoe Photosynthesis Lab . Make a hypothesis about which color in the visible spectrum causes the most plant growth and which causes the least plant growth. START AGAIN. The size of the paddle could be larger, or more paddles could be used. There are already over 3 million users taking advantage of our rich library of legal forms. The chemical composition and structure of a
material. Errors might have been made during the experiment, such as an error in measuring or recording data. (5/2)
13. Ozone shields living things from some harmful radiation from the Sun. 6. They are probably close to the nucleus, but may be anywhere. 3
Section 1 and 3 (page 114)
1. gd1W gd+.� 7$ 8$ H$ gd+.� n q { ~ � � � � � � � � � � R U � � ; = B a b s u x � � � � � � � � �������������������´���������sd h+.� 5�CJ OJ QJ ^J aJ hg h+.� CJ OJ QJ ^J aJ hk Possible answers include: yellow, solid, approx 3/4 kg, soft at room temperature
8. 3. T
8. 12. (1/1)
14. 5/2
8. If the core is massive
enough, it could collapse and become a black hole. They indicate the number of atoms of a particular element that are in a particular molecule. � Scientific
5. It has lost a positive ion. 3. 3. Water molecules are excreted by our skin. T
15. 15. The law of conservation of mass explains that
the mass of the products of a chemical reaction
is always the same as the mass of the reactants
in that reaction. Section 2 and 3 (page 51)
1. Site 1: Glencoe Photosynthesis Lab â bit.ly/pholab. Average atomic mass
5. e
6. c
7. b
8. a
9. h
10. f
11. g
12. d
Section 2 (page 64)
1. False. 9. Group 1 elements are called the alkali metals. Name:_____ Photosynthesis Virtual Lab. (8/3)
Reinforcement
Section 1 (page 109)
1. 7. These materials are returned to the environment and are used again. Cell Homeostasis Virtual Lab What happens to a cell when it is in different environments? No
c. Yes
d. No
Section 2 (page 82)
Directed Reading for Content Mastery
Overview (page 83)
1. reactant
2. endothermic
3. heat energy
4. heat energy
5. rate of reaction
6�8. Baby oil will float on water. Students should draw an �X� through hydrogen. 5/2
6. 3. Diagrams will vary. | Sections 2 and 3 (page 105)
1. a
2. b
3. a
4. b
5. a
6. a
7. a
8. b
Key Terms (page 106)
1. computer simulation
2. material
3. brainstorming
4. technology
5. constraints
6. materials science
7. scientist
8. engineer
9. malleability
10. quality control
11. conductivity
12. magnetism
Chapter Review
Part A. Section 3 (page 91)
1. water
2. Rapidly produce a Photosynthesis Virtual Lab Answer Key without needing to involve specialists. These labs give the students the adventure of laboratory experimentation without costly supplies, worrisome environmental and safety issues, or time-consuming clean up. 6. opposite reaction
7. delay
8. inertia
9. size; directions
10. backward; forward; forward
11. 5/2
5. 6. heart pacemaker and defibrillator
Section 3 (page 101)
1. defining the problem
2. to find other ideas that have been tried and succeeded or failed
3. Vocabulary Review (page 135)
1. eclipse (3/1)
2. solar system (4/2)
3. rotation (1/1)
4. revolution (1/1)
5. constellation (7/3)
6. galaxy (8/3)
Part B. Marketing professionals ensure that the final
product can be sold. The other groups may contain metals, nonmetals, and metalloids. F
13. Answers will vary. 2
6. The upper steps are higher energy levels, containing electrons that have more energy and are farther from the nucleus. B (2/1)
5. d (1/1)
6. c (6/2)
7. d (6/2)
8. a (3/1)
9. c (3/1)
10. a (1/1)
11. d (6/2)
12. d (6/2)
13. c (2/1)
14. c (3/1)
15. b (2/1)
Reinforcement
Section 1 (page 101)
1. precipitate
2. physical
3. homogeneous
4. mixtures
5. solutions
6. solvent
7. solute
8. fractionation
9. alloy
10. chemistry
Section 2 (page 90)
1. unequally
2. true
3. unequally
4. true
5. ionic
6. true
7. true
8. solvent
9. true
10. much of
11. how much solute dissolves in 100 g of solvent at a given temperature
12. a solution that can dissolve more solute
13. 5. false; Alloys have the properties of metals. 2. 10. It peels. Rutherford�s model had a nucleus; Thomson�s had the electrons imbedded in the positively charged material. Make a hypothesis about which color in the visible spectrum causes the most plant. �! Answers will vary. The liquid water exerts a buoyant force that holds up the floating ice cubes. Answers may vary. Elements can gain the stable atomic structure of a noble gas by either gaining or losing electrons. First Law of Motion. H2S ions
Directed Reading for Content Mastery
Overview (page 75)
1. electron cloud
2. nucleus
3. covalent
4. gain or loss of electrons
5. molecule
Section 1 (page 76)
5. Concept Review (page 108)
13. Accuracy (3/1)
5. 6. 5/2
13. Your hand pushes forward; the air pushes your
hand backward. 6. Water begins entering the gaseous state when
molecules gain enough energy to overcome
attractive forces. Directed Reading for Content Mastery
Overview (page 39)
1�3. Pressure applied at any point to a confined liquid is transmitted unchanged throughout the liquid. Dismiss Chapter 20. Since electrons came from every kind of cathode material, Thomson inferred that they are
part of all atoms.