Download Third Grade Science Chapter 1-2 Study Guide pg 1

Third Grade Science
Chapter 1-2 Study Guide
pg 1-50
Chapter 3 Lesson 3
pg 70-79
Vocabulary:
Organism is another word for living thing.
Respond – to react to the world around them.
Reproduce - to make more of one’s own kind.
Environment - all the living and nonliving things that surround an organism.
Cells - the small parts that are the building blocks of life.
Lungs- structures that take in oxygen from the air.
Gills - structures that take in oxygen from the water.
Shelter- a safe place where animals can protect themselves from bad weather or escape from other
animals.
Vertibrates - animals with backbones.
Invertibrates - animals without backbones.
Exoskeleton - a hard covering, or shell, that holds up and protects an invertebrate’s body.
Bird - is a kind of animal with a beak, feathers, two wings, and tow legs.
Reptiles - are vertebrates with scaly skin. They breathe through lungs, lay eggs, and tough scales.
Amphibians - start out floating as an egg in water, breath through gills. As they get older they grow legs
and lungs and live on land.
Fish - vertebrates that spend their whole lives in water. They use gills to breath, lay eggs and are
covered in scales and a slimy coating.
Mammals- they are born alive, make milk for their young, have hair or fur, and breathe with lungs.
Metamorphosis- a series of changes in which an organism’s body changes form.
Egg - an animal structure that protects and feeds some very young animals.
Larva - when an insect hatches.
Pupa - the stage of some insects’ life cycles before becoming an adult. The pupa of a butterfly is a
chrysalis.
Seed is a part of a plant that can grow into a new plant.
Pollination is when pollen moves to the female part of a flower.
Life cycle is how an organism grows and reproduces.
Metamorphosis is a change in body form.
Egg is a structure that protects and feeds young animals.
Inherited trait is a feature that is passed from parents to its young.
Fruit is the part of a plant that holds the seed.
Pollen is the powder on the male part of a flower.
Ferns reproduce using spores, they do not have seeds.
Eyes are the white spots on potatoes that grow into new plants
Bulb is an underground stem that produces more of its kind. Like an onion.
Students should be able to tell how lungs and gills are similar.
Students should be able to tell how the life cycle of a bird is similar the life cycle of a fish.
All organisms:
Grow
Reproduce
Respond
Name what living things need to survive
Food, water, shelter, air, and sunlight.
Tell how animals get food. (By eating other organisms.)
Plants make their own food using energy from the sun.
The parts of a plant are:
Roots- to hold the plants in place.
Stem- holds up a plant and its leaves. Carries water, nutrients and food trough a plant.
Leaf- where a plant makes food.
Photosynthesis is the process of plants using energy from the sun to make food.
Plants give off oxygen and take in carbon dioxide.
Compare a bear to a giraffe. How do their structures help them survive?
Classify means to put into a group with other animals that are similar.
Tell the differences between the different invertebrates.
Study the life cycles of a seed, frog, lady bug, sea turtle, trout and cheetah. See pages 36-45
Adaptations – a body part or way of acting that helps an organism live.
Camouflage- blending into their environment
Fat, fur, fuzzy leaves are all adaptations
Types of roots and special stems are adaptations of desert plants. Animals with thin bodies,
light fur and long ears are characteristics of desert animals.
Hibernation, trees losing leaves, types of leaves are adaptations of forest organisms.
Fins and gills help ocean animals survive. Plants that float are characteristics of ocean life.
Migration to warmer water also helps them survive.