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Practice pack

Answers Term 1 final Exam

Year 4 Term 1 Science department

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1- Living things and classification

(a)

(b) Here are some vertebrates.

Sort them into groups by writing their names in the table below.

mammals reptiles birds amphibians fish

Dog - llama

Lizard - crocodile

\

Penguin - chicken

Frog

Shark

C) Each of these sentences describes a type of a vertebrate.

For each one, write mammal, bird, amphibian, reptile or fish to say what it is describing.

It has feathers and a beak. …bird………………………………

It gives birth to live babies. ………mammal……………………………..

It has fins, scales and gills. ………………fish…………………

It has damp skin and is born with gills, but grows lungs as it gets older. ……amphibian…………

backbone

features

VV

backbone

backbone

backbone

backbone

same

lungs

backbone

gills

backbone

backbone

backbone

eggs babies

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d) The drawing shows a human, a chaffinch, a dog and a whale.

i- Which group do all the four animals belong to?

………………………vertebrates…………………………………………………..

ii- Mention one common thing all the four animals can do.

………………………any of the seven life processes( move, respire, sense, )………

iii- Describe how the whale is adapted to live in water.

…………………………it has fins that helps it to swim…………………………………

iv- Describe how birds are adapted to fly.

………………They have wings…………………………………………………………

e)

light

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f- You need to make a key to identify these living things. To make the key you need to think

what they have in common and what their differences are.

Write the letters of the organisms that

Have a backbone ……C D E F………..

Live in trees ……CE……..

Have legs ……BCEF………..

Can jump ……E F………..

Can fly ……C…..

Have fur ………E……..

Eat nuts ……E……….

support

light

light

X

lig

ht

X

lig

ht

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g- Nathan’s cat has brought a worm in from the garden.

Complete these 2 sentences using the words in the box.

The cat has a ……backbone…………… and is a ……vertebrate………………

The worm doesn’t have a ………backbone…………… inside it and is an ……invertebrate

…

h- Some children found 4 mini beasts. They made a table about their observations.

Use the table to identify these 2 mini beasts

Vertebrate – invertebrate -

backbone

dragonfly housefly

X

X

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2- Skeletal system and muscles

1- The human skeleton is made up of 206 bones.

a) Using the diagram below, place the parts in the correct order to form a figure of a skeleton.

b) Use the skeleton diagram to help you complete this table about bones and their functions.

c) Which bone protects the brain from damage? ………the skull……………………

d) Which bone protects the spinal cord? ………the spine……………………

2- Complete the following sentences:

a- For the skeleton to perform its function of support, the bones have to be

………hard……………..and …………rigid……………….

b- The skeleton helps us in movement because bones are attached to the

……………muscles……………. By ………tendons……………….

c- The human skeleton is a framework of ……bones…………………

clue Name of bone function

The main head bone skull Protect the brain

The bones which

wrap around the heart

and lungs

ribcage Protect the heart and

the lungs

The column at the

back of the body

spine Protect the spinal

cord

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3- Class 4 wants to investigate if adults and year 6 students have the same size feet.

a- What could class 4 students use to measure their feet?

……………………a ruler – measuring tape……………………………………………..

b- Amy measures Mrs. Smith’s and Min’s feet. Min’s feet are longer. Amy says’ “year 6 students

have longer feet than adults.”

Is her conclusion correct? Yes No

c- How can she make sure her measurements are correct?

……………she should take the measurements for more than one time…………

d- Would you expect most adults’ feet to be bigger than year 6 students?

Yes No

Why?

………Because as we grow our bones grow bigger…………………

e- Tim measures the feet of 20 year 6 students.

Length Number of students

18- 20 7

21-23 10

24-26 3

Use the table to complete the bar graph

0

5

10

15

20

18-20 21-23 24-26

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4- a) Complete the following table:

b) As the person grows, which of these measurements changes least?

……………………………the head circumference………………………………………………..

5-

a- If you are going to lift up a bag, which 2 main muscles will work in your arm?

……………………the biceps and the triceps…………………………

b- Explain how they will do the job?

……………the biceps will contract and the triceps will relax……….

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3- Habitats and food chains

a- The owl has caught a mouse to feed its young.

The owl has good hearing for finding prey at night.

Look at the picture.

How else is the owl adapted to catching its prey?

……………it has sharp beak and claws………………………………

b- Two scientists were investigating the undigested food of an owl.

They found some bones and skulls.

They made this key to identify the skulls they found in the undigested food.

Use the key to identify these skulls.

X

rat mole

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2-

(a) These animals live in a freshwater river.

The otter has a strong tail which it uses to push itself through water.

What part of their body do these animals use to push themselves through water?

(i) duck ...................their webbed feet........................

(ii) salmon ........................their fins...............................................

(b) Here is a food chain from the same river.

algae (green plants) → water insects → salmon → otters

Which is the producer in this food chain?

.....................................algae................................................................................

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3- Woodlice

(a) The children decided to find out which conditions woodlice prefer.

They prepared a box which gave woodlice a choice of four different sections labeled A, B, C and D.

They carried out a fair test.

They placed 20 woodlice in the center of the box.

The woodlice could move around easily.

After 20 minutes the children counted how many woodlice were in each section.

They did the investigation two more times.

Why did they carry out their investigation three times?

...........................to check their results............................................................................

(b) They recorded their results in a table.

Number of woodlice in the different sections

A B C D

First time 1 1 5 13

Second time 2 2 5 11

Third time 2 0 4 14

Look at the information in the table.

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Which conditions do woodlice prefer? ……condition D……………

(c) The children wanted to find some more woodlice.

In which of these habitats would they be most likely to find woodlice?

Tick TWO boxes.

on a playground

under a rotting log

on a flower

in the sea

under a stone

on sandy soil

d) Shrews eat woodlice.

Woodlice eat rotting leaves.

Complete the food chain for woodlice, leaves and shrews.

............rotting

leaves..... →.............woodlice....... → .......shrews.................

4-

Explain your answer.

…………”A” because it is white and can camouflage in the snow, it will be hard for the predators

to see it ….

X

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5- These animals live in different environments.

Complete the table below to describe ONE feature of a Polar Bear. Say how the feature helps the Polar Bear to live in its environment.

Animal Lives in... One feature that helps

the animal to live in

its environment

How the

feature helps

Monkey rainforest it has a tail to help it balance

Polar

Bear

the Arctic

it has ...thick white fur....................

.....

...to keep it warm.........

6- a) Kami grows cabbages in his vegetable patch. Some of the cabbages

are eaten by snails. Some of the snails are eaten by birds called thrushes.

Write a food chain to show this information.

Use arrows in your food chain.

............cabbage….. .....snails................ ...thrushes..........

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b) A cabbage has many leaves.

Tick ONE box to show why leaves are important to a cabbage plant.

The leaves...

attract insects.

anchor the plant in the ground.

collect pollen.

Make its food .

6-: Sea turtles

(a) Turtles live in the sea. They lay their eggs on sandy beaches.

Tick ONE box to show which life process laying eggs is part of.

reproduction

growth

nutrition

movement

(b) Baby turtles hatch from the eggs at night to avoid being eaten by predators.

How could hatching at night help baby turtles to avoid predators?

.....................it will be harder for the predators to see it..........................

X

C

X

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7-

8-

a- Mention the name of the human activity that caused this to this area

………………Deforestation…………………………………………..

b- How does this activity affect the living things that live in this area?

……they will have no shelter – they will not find their food

………………………………………………………………………

c- How does it affect the environment?

There will be more carbon dioxide which leads to global warming and rise in earth’s

temperature.

d- How can we protect the environment from such activity?

Pointed beak

To hunt and eat fish

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……………Planting more trees.……………………...

4- Heat and temperature

1- A student filled a cup of water and placed it in front of the window on a sunny day. She

measured the temperature of the water every 30 minutes for 2 hours. She recorded her

observation in a table.

a-

b- From her observation, when was the warmest time in these 2 hours?

………………………………3 pm…………………………………………………………

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2-

3-

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4- Daniel wraps one ice cube in cotton cloth and another in woolen cloth. He says:

a) Why might he think that?

……because it is thicker and will insulate more heat ……………………………………….

b) Write down one thing he must keep the same to keep his test fair.

…………………amount of ice - put it in the same place…………………………

c) What will he measure?

…………………the time each ice cube will take to change to water………………

d) How could he check his results?

………………………repeat the experiment more than one time………………….

5- Class 4 students are using a temperature sensor connected to a computer to record

their temperature in their classroom for 24 hours.

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a) What happens to the temperature between 4 pm and 6 pm?

…………………it goes down……………………………………………………………….

………………………………………………………………………………………………….

b) What is the temperature change from night time to day time?

…………………………10 c…………………………………………….

c) What time does the heating come on in the morning?

…………………6 am……………………………………………………….

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It goes down.

thermometer

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8- Mrs. Cooper and Mr. Jones both take a drink with them while they are out

walking.

a- Mrs. Cooper want to keep her drink warm so she wraps a scarf round the cup.

What other way could she use to keep her drink warm?

…………she can cover it with an insulator………

b- Complete the sentence.

The handle on a kettle is made of ………plastic………………. Because

……………it is an insulator …………