4 Mammals

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Worksheet

1

RememberMammals are vertebrates. They breathe through their lungs. They areviviparous, and nurse their young with milk. Their skin is usually covered with fur or hair.

1. Circle eight words related to mammals. Use the words to complete the sentences.

MAMMALS

Mammals have a spinal column. They are .

They breathe through their .

They skin is covered with hair or .

They give birth to live young. They are .

They nurse their young with .

They move about using their .

Some swim using or fly using .

J L M B W S A O W I NB V I V I P A R O U SR K L A N V Z C R H DE H K M G O N Y F U RS P B T S F I N S I XK L J F N U T O S N RV E R T E B R A T E SX G V L W D G J A Q PV S A F L U N G S S R

vertebrates

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5 Vertebrates

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Remember

Fish, amphibians, reptiles and birds are also vertebrates.

1. Match the characteristics with the vertebrate group/groups.

2. Answer the questions.

In which vertebrate group are the young different from the adults?

In which vertebrate group are the limbs fins?

REPTILES

FISH

MAMMALS

BIRDS

AMPHIBIANS

Skin covered with fur/hair

Lay eggs

Give birth to live young

Breathe though lungs

Skin covered with feathers

Skin covered with scales

Breathe through gills

Bare skin

Young called tadpolesSCIE

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6 Invertebrates

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ReinforcementWorksheet

1

Name

ReinforcementName Date

Worksheet

3

1. Make correct sentences. Circle and write.

2. Color the insect: head - blue, thorax - green, abdomen - red. Label the antenna,wing, and leg.

Remember

Invertebrates do not have a spinal column. There are many differentgroups. Some of the most important are worms, mollusks and insects.

Worms have long, bodies and legs.

Molluscs have hard

bodies and a shell.

hard many

nosoft

Worms have long, soft bodies...

soft scales.

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7 Types of Biomes

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Grasslands

Deserts

Coniferous Forest

Deciduous Forest

Tundra

Rainforests

They have heavy rainfall throughout theyear and 70% of the plants are trees.

Remember

A biome is a large area with a particular range of plants and animals that areadapted to survive in the climatic and geographic ecosystems within a biome.

1. Match the biomes with their characteristics.

2. Answer the questions.

Which biomes receive the most rainfall?

Which biomes receive the least rainfall?

They have a hot dry season and a warm wetseason. There is more tall grass than trees.

Temperatures are extreme and there is verylittle rainfall. They are the driest of all biomes.

Winters are long and cold and summers areshort. There is little rainfall. It is difficult forplants to grow.

They are the most populated of all biomes.They have a warm and cold season withmedium rainfall all year. The soil is fertile.

They have a cool climate with medium rainfall.The plant life is mainly evergreen trees.

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8 Survival in a Biome

ReinforcementWorksheet

5

Name Date

Remember

In order for animals to survive they must gain energy by eating other livingthings in the biome. This feeding relationship is known as a food chain.

1. Label and draw to complete the diagram.

primary consumer producer carnivore

secondary consumer herbivore

eagle

squirrel

tree acorns

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9 Reacting to the Environment

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Worksheet

6

1. Number the sequence. Write the sentences in the correct order.

Remember

Reacting is a process carried out by the sense organs, the nervoussystem and the musculoskeletal system.

The eyes receive theimage of the traffic light.

The legs move and thegirl crosses the street.

The brain transmitsorders to the legs.

The brain decides to cross the street.

The optic nerve sendsinformation to the brain.

1

5

4

3

2

1 The eyes receive the image of the traffic light.

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10 The Musculoskeletal System

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Worksheet

7

Remember

The musculoskeletal system is made up of the skeleton and muscles.Bones are connected at joints. Muscles move bones.

1. Use the words to complete the word map.

2. Look and answer the questions.

the skeleton muscles the muscular system tendons bones

is made up of is made up of

joined by

The musculoskeletal system

is made up of

What muscle contracts

when we bend our arm? . What muscle relaxes

when we bend our arm? . What muscle contracts

when we stretch our arm? . What muscle relaxes

when we stretch our arm? .

biceps

triceps

biceps

triceps

The skeleton

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Nutrition

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Worksheet

8

Remember

Nutrition is the process of ingesting food, extracting important nutrientsand expelling waste. Nutrition includes the digestive process, breathing,circulation and excretion.

1. Which processes are part of nutrition? Decide and write.

Watching TV. The heart beating. Eating an apple. Having children. Breathing. Digesting food.

2. Match the column with the pictures.

Group 4. Fruit and vegetables

Give us energy

Group 3. Rice,pasta, bread,sugar and cakes

Have nutrients to help us grow

Group 2. Meat,fish and eggs

Provide nutrients,like calcium

Group 5. Oil and butter

Provide vitamins

Group 1. Milk anddairy products

Give us energy

Eating an apple.

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12 The Digestive Process

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Worksheet

9

1. Make correct sentences. Circle and write.

Remember

The digestive process enables us to obtain nutrients from the food we eat.There are two phases: digestion and absorption.

Digestion begins in the mouth , where food is chewed and mixed with saliva.

In the stomach, food is mixed with gastric juices and forms a thick liquid.

This liquid passes into the small intestine.

Nutrition

ends in the small intestine and then absorption

takes place.

Nutrients

form in the large intestine and are passed out through the anus.

stomach

mouth

gastric juices

saliva

Digestion

Feces pancreas.

nutrition

Digestion begins in the mouth.

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13 The Digestive, Respiratory, Circulatory and Excretory Systems

systemsystem

system

ReinforcementName Date

Worksheet

10

Remember

Nutrition includes the digestive, respiratory, circulatory, and excretorysystems.

1. Label and complete the diagrams.

esophagus stomach liver pancreas intestine anus heartblood vessel lung trachea bronchi kidney bladder

system

esophagus

Digestive

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