G1 RE Answer Key_revised 3-20-2009.doc 1
Chapter 1 Plants Are Living Things
Lesson 1 - Learning About Living Things
Read a Photo: Living and Nonliving Things
cow, grass, tree (p. 3)
Quick Check
1. tree, dog (p. 3)
2. desk, book (p. 3)
3. water, food, air, or sunlight (p. 5)
4. water, food, air, or sunlight (p. 5)
Lesson 2 - Parts of Plants
Read a Diagram: Strawberry Plant
roots (p. 6)
Quick Check
5. leaves, stems, or roots (p. 7)
6. leaves, stems, or roots (p. 7)
7. leaves, stems, or roots (p. 7)
8. sunlight, air, water (p. 9)
Lesson 3 Different Plants
Read a Photo: Tall Trees
leaves, stems, or trunks (p. 11)
Quick Check
9. child drawing of two leaves that are different in size, shape, or color (p. 11)
10. child drawing of a picture of any edible plant part (p. 13)
Chapter 1 Vocabulary Review
1. child drawing of a simple plant with the following parts labeled: leaves, roots, stem
(p. 14)
Chapter 2 Plants Grow and Change
Lesson 1 Flowers, Fruits, and Seeds
Read a Diagram: Look Inside a Seed
the outside (p. 18)
Quick Check
1. flower (p. 17)
2. fruit (p. 17)
3. water (p. 19)
Lesson 2 How Plants Grow and Change
Read a Diagram: Life Cycle of a Bean Plant
a seed (p. 21)
Quick Check
4. seed (p. 21)
5. new plant (p. 21)
6. child drawing of plant stem with roots in water (p. 23)
Lesson 3 Plants Live in Many Places
Read a Photo: Rain Forest Plants
big, pointy (p. 25)
Quick Check
7. a dry place (p. 25)
8. wet (p. 25)
9. Child drawing of plants should be low to the ground and in groups. (p. 27)
Chapter 2: Vocabulary Review
1. draw line to photo 1, desert scene (p. 28)
2. draw line to picture 3, rain forest scene (p. 28)
3. draw line to picture 2, Arctic scene (p. 28)
Chapter 3 All About Animals
Lesson 1 All Kinds of Animals
Read a Diagram: Parts of a Fish
fins (p. 34)
Quick Check
1. mammal (p. 31)
2. bird (p. 31)
3. child drawing of a snake, a turtle, an alligator, or other reptile (p. 33)
4. gills (p. 35)
5. 6 legs (p. 35)
Lesson 2 What Animals Need to Live
Read a Photo: Zebras’ Needs
drinking water (p. 36)
Quick Check
6. child drawing of an animal drinking water, eating, or in a shelter (p. 37)
7. circle around legs, wings, fins (p. 39)
Lesson 3 How Animals Eat Food
Read a Photo: Teeth
sharp teeth (p. 42)
Quick Check
8. rabbit, horse, cow, or other plant-eating animal (p. 41)
9. meat or other animals (p. 43)
Lesson 4 Animals Grow and Change
Read a Diagram: Life Cycle of a Bird
size, feathers, color (p. 46)
Quick Check
10. mom, dad, parents (p. 45)
11. mother, adult fox (p. 45)
12. feathers (p. 47)
13. change (p. 47)
14. First: egg; Second: tadpole; Last: frog (p. 49)
Chapter 3: Vocabulary Review
1. bird (p. 50)
2. mammal (p. 50)
3. fish (p. 50)
4. insect (p. 50)
Chapter 4 Places to Live
Lesson 1 Land Habitats
Read a Photo: Woodpecker
food; a home (p. 55)
Quick Check
1. child drawing of a lot of grass with giraffes, prairie dogs, lions, or other grassland animal (p. 53)
2. deer, raccoon, woodpecker, or any other forest animal (p. 55)
3. deer, raccoon, woodpecker, or any other forest animal (p. 55)
Lesson 2 Water Habitats
Read a Photo: Lake Habitat
plants, birds, fish (p. 56)
Quick Check
4. food, a home (p. 57)
5. food, a home (p. 57)
6. fish, mammal, whale, sea lion, seaweed (p. 59)
Lesson 3 Plants and Animals Live Together
Read a Diagram: Food Chain
frog (p. 63)
Quick Check
7. homes, food, hiding (p. 61)
8. new plants, seeds (p. 61)
9. the Sun (p. 63)
10. child drawing of trees being cut down, or a fire (p. 65)
Chapter 4: Vocabulary Review
1. ocean (p. 66)
2. grassland (p. 66)
3. forest (p. 66)
4. lake (p. 66)
Chapter 5 Looking at Earth
Lesson 1 What Earth Looks Like
Read a Photo: Earth
land (p. 68)
Quick Check
1. water (p. 69)
2. lakes, rivers, oceans (p. 71)
3. child drawing of two kinds of land: valley, mountain, or plain (p. 73)
Lesson 2 Rocks and Soil
Read a Photo: Rocks
color, shape, rough/smooth, size (p. 75)
Quick Check
4. basalt, chalk, or sandstone (p. 75)
5. granite, pumice, limestone, marble, or obsidian (p. 75)
6. small rocks, dead plants, dead animals, air, or water (p. 77)
7. small rocks, dead plants, dead animals, air, or water (p. 77)
Lesson 3 Changing the Land
Read a Photo: Changing Rock
ice or water (p. 78)
Quick Check
8. water, ice, plants, or roots (p. 79)
9. water, ice, plants, or roots (p. 79)
10. Wind or water move the soil and rocks. (p. 81)
Chapter 5: Vocabulary Review
1. draw line to low land between mountains (p. 82)
2. draw line to fresh water that flows into lakes and oceans (p. 82)
3. draw line to very high land (p. 82)
4. draw line to flat land that is very wide (p. 82)
Chapter 6 Caring for Earth
Lesson 1 Earth’s Resources
Read a Photo: Earth’s Resources
cows, rocks, soil, grass, plants (p. 86)
Quick Check
1. plants, animals, rocks, soil, air, or water (p. 85)
2. plants, animals, rocks, soil, air, or water (p. 85)
3. resource (p. 87)
4. soil (p. 87)
Lesson 2 Using Earth’s Resources
Read a Photo: Using Water
to wash, to cook, or to play (p. 89)
Quick Check
5. child drawing of swimming, drinking, bathing, cooking, boating, or washing (p. 89)
6. air, land, water, plants, animals, or people (p. 91)
7. air, land, water, plants, animals, or people (p. 91)
Lesson 3 Saving Earth’s Resources
Read a Photo: Reuse It
a box, egg cartoons, milk container, newspaper, bottle tops (p. 93)
Quick Check
8. Possible answer: To save natural resources. (p. 93)
9. reduce (p. 95)
10. recycle (p. 95)
Chapter 6: Vocabulary Review
1. reuse (p. 96)
2. pollution (p. 96)
3. natural resources (p. 96)
Chapter 7 Weather and Seasons
Lesson 1 Weather All Around Us
Read a Photo: Weather Tools
thermometer (p. 100)
Quick Check
1. rainy, sunny, cloudy, snowy (p. 99)
2. wind vane (p. 101)
3. rain gauge (p. 101)
Lesson 2 The Water Cycle
Read a Diagram: The Water Cycle
the Sun (p. 102)
Quick Check
4. water, ice (p. 103)
5. Child drawing should show storm, fluffy, or thin clouds (p. 105)
Lesson 3 Spring and Summer
Read a Chart: Sunlight in Spring
6:21 p.m. (p. 106)
Quick Check
6. new plants grow; baby animals are born; it rains; sunlight warms things. (p. 107)
7. spring (p. 109)
8. warm and dry (p. 109)
Lesson 4 Fall and Winter
Read a Diagram: Seasons
winter (p. 112)
Quick Check
9. grow thick fur, move to warmer places, move south, or store food (p. 111)
10. grow thick fur, move to warmer places, move south, or store food (p. 111)
11. winter (p. 113)
12. sleep (p. 113)
Chapter 7: Vocabulary Review
1. temperature (p. 114)
2. winter (p. 114)
3. fall (p. 114)
4. season (p. 114)
Chapter 8 The Sky
Lesson 1 The Sky Above
Read a Photo: Sun’s Warmth
the boy (p. 118)
Quick Check
1. They are very far away. (p. 117)
2. heat, light (p. 119)
Lesson 2 Earth Moves
Read a Diagram: One Full Year
the Sun (p. 122)
Quick Check
3. day and night (p. 121)
4. one year (p. 123)
Lesson 3 Earth’s Neighbors
Read a Diagram: Moon Phases
new moon (p. 125)
Quick Check
5. the Sun (p. 125)
6. Mercury (p. 127)
7. warmer (p. 127)
Chapter 8: Vocabulary Review
1. Moon (p. 128)
2. planet (p. 128)
3. stars (p. 128)
4. Sun (p. 128)
Chapter 9 Matter Everywhere
Lesson 1 Describing Matter
Read a Photo: Comparing Mass
Children’s guesses may vary. You can use a balance to measure mass. (p. 133)
Quick Check
1. green, red, blue, or yellow (p. 131)
2. green, red, blue, or yellow (p. 131)
3. more (p. 133)
4. less (p. 133)
Lesson 2 Solids
Read a Photo: Building Blocks
Possible answers: blocks, boy, shelves, or shirt (p. 134)
Quick Check
5. blocks, puzzle, people, ball, or any other solid (p. 135)
6. blocks, puzzle, people, ball, or any other solid (p. 135)
7. child drawing of any solid (p. 137)
8. Answers describe color, hardness, texture, shape, or size of solid. (p. 137)
Lesson 3 Liquids and Gases
Read a Diagram: Gas Changes Shape
no (p. 140)
Quick Check
9. Possible answers: takes up space, has mass, kind of matter (p. 139)
10. does not (p. 141)
11. will (p. 141)
Chapter 9: Vocabulary Review
1. matter (p. 142)
2. mass (p. 142)
3. solid (p. 142)
4. gases (p. 142)
5. liquids (p. 142)
Chapter 10 Changes in Matter
Lesson 1 Matter Can Change
Read a Photo: Shaping Clay
a solid (p. 144)
Quick Check
1. cut, folded (p. 145)
Lesson 2 Making Mixtures
Read a Photo: Sink and Float
float (p. 147)
Quick Check
2. Possible answers: salad, trail mix, cereal in milk, or other mixture of more than one food item (p. 147)
3. dissolve (p. 149)
4. oil (p. 149)
Lesson 3 Heat Can Change Matter
Read a Photo: Forms of Water
a solid, ice (p. 151)
Quick Check
5. freezes (p. 151)
6. melts (p. 151)
7. gas (p. 153)
8. a liquid, water drops (p. 153)
Chapter 10: Vocabulary Review
a / m / l / o / t / s / i / md / i / s / s / o / l / v / e
e / x / t / o / c / w / h / l
a / t / n / q / n / s / b / t
v / u / k / w / n / p / b / o
f / r / e / e / z / e / c / t
z / e / g / s / u / g / j / n
mixture [2nd column from left, starting 1st letter at top]
dissolve [2nd row from top, starting 1st letter at left]
melt [7th column from left, starting 1st letter at top]
freeze [6th row from top, starting 1st letter at left] (p. 154)
Chapter 11 On the Move
Lesson 1 Position and Motion
Read a Photo: Find Things at a Fair
Children’s answers will vary. (p. 157)
Quick Check
1. over, under, left, near (p. 157)
2. motion (p. 159)
3. fast (p. 159)
Lesson 2 Pushes and Pulls
Read a Photo: Jumping Rope
gravity (p. 161)
Quick Check
4. away from you (p. 161)
5. toward you (p. 161)
6. big (p. 163)
7. small (p. 163)
Lesson 3 Simple Machines
Read a Photo: Using Simple Machines
rakes (p. 164)
Quick Check
8. move things, do work, lift things (p. 165)
9. move things, do work, lift things (p. 165)
10. child drawing of a simple machine in use (p. 167)
Lesson 4 Magnets
Read a Chart: Magnet Chart
paper clip, washer, or twist tie (p. 168)
Quick Check
11. iron (p. 169)
12. Possible answers: google eyes, rubber bands, pom-poms, marbles, erasers, crayons, pennies (p. 169)
13. N and S (p. 171)
14. N and N, S and S (p. 171)
Chapter 11: Vocabulary Review
1. pull (p. 172)
2. magnet (p. 172)
3. force (p. 172)
Chapter 12 Energy Everywhere
Lesson 1 Energy and Heat
Read a Photo: Heat Energy
the fire (p. 176)
Quick Check
1. heat, light, sound, or electricity (p. 175)
2. heat, light, sound, or electricity (p. 175)
3. warms (p. 177)
4. a fire, the Sun (p. 177)
Lesson 2 Sound
Read a Photo: City Sounds
Possible answers: police whistle, car horn, sirens (p. 179)
Quick Check
5. child drawing showing home, school, or community scene with various sounds labeled (p. 179)
6. Possible answers: motorcycle, fire engine, whistle, or other loud sounds (p. 181)
Lesson 3 Light
Read a Diagram: Light and Sight
light ( p. 182)
Quick Check
7. body, mask, or other appropriate object (p. 183)
8. body, mask, or other appropriate object (p. 183)
9. the Sun (p. 185)
10. Possible answers: stars, lamps, flashlights (p. 185)
Lesson 4 Electricity
Read a Diagram: Plugged In
computer, tv, fan, radio, or other object that needs electricity (p. 187)
Quick Check
11. Electricity from Wires: lamp, computer, radio, TV, fan, vacuum, fish tank, nightlight, alarm clock; Electricity from Batteries: watch, calculator, TV remote, toy car, joystick, cell phone (p. 187)
Chapter 12: Vocabulary Review
1. light (p. 188)
2. heat (p. 188)
3. vibrate (p. 188)