why do we need air? - alston publishing house do we need air? ... exhaled air is warmer than inhaled...

Name: Class: Date:

Body Systems: Circulatory and Respiratory

Consolidation Worksheet 1Why Do We Need Air?Read the statements below and write ‘T’ for the statements that are true and ‘F’ for the statements that are false.

Statements True/False

1 Air is mainly made up of nitrogen and oxygen.

2The air we breathe out contains more carbon dioxide than the air we breathe in.

3 Water vapour makes up 1 % of the air around us.

4 Oxygen is needed for respiration to take place.

5 Exhaled air is warmer than inhaled air.

6 Limewater can be used to test for the presence of oxygen.

© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 6 75

Name: Class: Date:


Consolidation Worksheet 2What Makes Up Our Respiratory System and What Is Its Function?Draw the organs that make up the respiratory system in the diagram below and label them. You should include the nose, windpipe and lungs.

The steps of what happens when we inhale are shown below. Number the steps in the correct order.

Step What happens

Our chest cavity becomes bigger, creating an area of low air pressure.

2. Air in our lungs enters the bloodstream.

3. Our ribcage moves upwards and outwards.

4. Our diaphragm contracts and flattens.

5.Our lungs expand, allowing air to rush in through our nose, down the windpipe and into them.

Diaphragm

76 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources

Name: Class: Date:


Consolidation Worksheet 3What Makes Up the Circulatory System and What Is Its Function?Read the statements below and tick (ü) the statements that are true.

Statements True

1 The heart is a muscular organ.

2 Capillaries are big blood vessels.

3Blood rich in oxygen travels from the lungs back to the heart first before it is pumped to the rest of the body.

4 All arteries carry only oxygen-rich blood.

5 Blood rich in oxygen is dark red in colour.

6 Blood makes up 8 % of our body weight.

7The right side of the heart receives blood from the lungs and pumps it to the rest of the body.

Name: Class: Date:


Consolidation Worksheet 2What Makes Up Our Respiratory System and What Is Its Function?Draw the organs that make up the respiratory system in the diagram below and label them. You should include the nose, windpipe and lungs.

The steps of what happens when we inhale are shown below. Number the steps in the correct order.

Step What happens

Our chest cavity becomes bigger, creating an area of low air pressure.

2. Air in our lungs enters the bloodstream.

3. Our ribcage moves upwards and outwards.

4. Our diaphragm contracts and flattens.

5.Our lungs expand, allowing air to rush in through our nose, down the windpipe and into them.

Diaphragm


How is oxygen transported throughout our body when we breathe in? Fill in the blanks to describe the steps below. The first step has been done for you.

Step What happens

1Oxygen that we breathe in reaches the air sacs in our lungs. It then enters the bloodstream which transports it to the heart.

2The heart pumps the blood rich in to all parts of our body.

3Oxygen is combined with digested food for cells to release

. Waste such as produced during respiration enters another series of blood vessels.

4The blood which contains carbon dioxide produced during respiration returns to the .

5The heart pumps the blood to the where carbon dioxide is removed. A fresh supply of is taken in.


How is oxygen transported throughout our body when we breathe in? Fill in the blanks to describe the steps below. The first step has been done for you.

Step What happens

1Oxygen that we breathe in reaches the air sacs in our lungs. It then enters the bloodstream which transports it to the heart.

2The heart pumps the blood rich in to all parts of our body.

3Oxygen is combined with digested food for cells to release

. Waste such as produced during respiration enters another series of blood vessels.

4The blood which contains carbon dioxide produced during respiration returns to the .

5The heart pumps the blood to the where carbon dioxide is removed. A fresh supply of is taken in.

Name: Class: Date:


Consolidation Worksheet 4What If Our Respiratory and Circulatory Systems Break Down?Answer the following questions.

a. If a person has difficulty breathing because of a reaction to a trigger, what ailment might this person have?

b. Name two common triggers for the ailment mentioned in ‘a’.

c. What could happen if the person suffering from an attack of the ailment

mentioned in ‘a’ is not treated?

d. What are the treatments for the ailment mentioned in ‘a’?

Complete the mind map below.

Fat, cholesterol and other substances forming plaque on the arteries, narrowing them and making it harder for blood to flow through.

is caused by

can be prevented by

is caused by

can be treated with


Name: Class: Date:

Fun and Games


How ‘Airtistic’ Are You?

Air is important to living things. Other than keeping living things alive, there are many ways air can be useful.

Let’s find out how we can use air to do art!

Materials• Somepaintandwater• Astraw• Apieceofpaper

Procedure

Step 1: Dip the straw into the container of paint mixed with water and ‘lift’ some paint as shown below.

Step 3: Gently blow at the paint from different directions.

Admire your work of art!

Step 2: Drop the paint onto a piece of paper.

Completed art piece

Paint mixed with water Straw

Paper


Name: Class: Date:

Exam Practice


The picture below shows some blood vessels.

Process skills: Observing, Comparing, Analysing

X Y

Z

a. Which of the blood vessels, X, Y or Z, transports blood rich in carbon dioxide? [1 mark]

b. Which of the blood vessels, X, Y or Z, carries blood from the heart to the lungs to pick up oxygen? [1 mark]

c. Which of the blood vessels, X, Y or Z, has the thinnest walls? [1 mark]

d. Stateonefunctionofthethinwallsinthebloodvessels you mentioned in ‘c’. [1 mark]

Hint:How are thin walls in blood vessels useful?


Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Bo

dy

Sy

stem

s: C

ircu

lato

ry a

nd

Res

pir

ato

ry

Co

nso

lid

atio

n W

ork

shee

t 1W

hy D

o W

e N

eed

Air

?Re

ad th

e st

atem

ents

bel

ow a

nd w

rite

‘T’ f

or th

e st

atem

ents

that

are

true

and

‘F’

for

the

stat

emen

ts th

at a

re fa

lse.

Stat

emen

tsTr

ue/F

alse

1A

ir is

mai

nly

mad

e up

of n

itrog

en a

nd o

xyge

n.

2Th

e ai

r w

e br

eath

e ou

t con

tain

s m

ore

carb

on d

ioxid

e th

an

the

air

we

brea

the

in.

3W

ater

vap

our

mak

es u

p 1 %

of t

he a

ir ar

ound

us.

4O

xyge

n is

need

ed fo

r re

spira

tion

to ta

ke p

lace

.

5Ex

hale

d ai

r is

war

mer

than

inha

led

air.

6Lim

ewat

er c

an b

e us

ed to

test

for

the

pres

ence

of o

xyge

n.

T T TF FT

Nam

e:

C

lass

:

Dat

e:

Bo

dy

Sy

stem

s: C

ircu

lato

ry a

nd

Res

pir

ato

ry

Co

nso

lid

atio

n W

ork

shee

t 2W

ha

t M

ak

es U

p O

ur

Res

pir

ato

ry S

yst

em a

nd

Wha

t Is

Its

Funct

ion?

Dra

w th

e or

gans

that

mak

e up

the

resp

irato

ry s

yste

m in

the

diag

ram

bel

ow a

nd

labe

l the

m. Y

ou s

houl

d in

clud

e th

e no

se, w

indp

ipe

and

lung

s.

The

step

s of

wha

t hap

pens

whe

n w

e in

hale

are

sho

wn

belo

w. N

umbe

r th

e st

eps

in

the

corr

ect o

rder

.

Step

Wha

t hap

pens

Our

che

st c

avity

bec

omes

big

ger,

crea

ting

an a

rea

of lo

w a

ir pr

essu

re.

2.A

ir in

our

lung

s en

ters

the

bloo

dstr

eam

.

3.O

ur r

ibca

ge m

oves

upw

ards

and

out

war

ds.

4.O

ur d

iaph

ragm

con

trac

ts a

nd fl

atte

ns.

5.O

ur lu

ngs

expa

nd, a

llow

ing

air

to r

ush

in th

roug

h ou

r no

se, d

own

the

win

dpip

e an

d in

to th

em.

3 5 2 1 4

Nos

e

Win

dpip

e

Lung

s

(Pup

ils s

houl

d dr

aw

the

resp

irato

ry s

yste

m

simila

r to

the

exam

ple.

Th

e no

se, w

indp

ipe,

and

lu

ngs

mus

t be

incl

uded

.)

Dia

phra

gm


Ch

ap

ter 1

Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Bo

dy

Sy

stem

s: C

ircu

lato

ry a

nd

Res

pir

ato

ry

Co

nso

lid

atio

n W

ork

shee

t 3W

ha

t M

ak

es U

p t

he

Cir

cula

tory

Syst

em a

nd

Wha

t Is

Its

Funct

ion?

Read

the

stat

emen

ts b

elow

and

tick

(ü

) th

e st

atem

ents

that

are

true

.

Stat

emen

tsTr

ue

1Th

e he

art i

s a

mus

cula

r or

gan.

2C

apilla

ries

are

big

bloo

d ve

ssel

s.

3Bl

ood

rich

in o

xyge

n tr

avel

s fr

om th

e lu

ngs

back

to th

e he

art

first

bef

ore

it is

pum

ped

to th

e re

st o

f the

bod

y.

4A

ll ar

terie

s ca

rry

only

oxy

gen-

rich

bloo

d.

5Bl

ood

rich

in o

xyge

n is

dark

red

in c

olou

r.

6Bl

ood

mak

es u

p 8

% o

f our

bod

y w

eigh

t.

7Th

e rig

ht s

ide

of th

e he

art r

ecei

ves

bloo

d fr

om th

e lu

ngs

and

pum

ps it

to th

e re

st o

f the

bod

y.

ü ü üü

How

is o

xyge

n tr

ansp

orte

d th

roug

hout

our

bod

y w

hen

we

brea

the

in?

Fill i

n th

e bl

anks

to d

escr

ibe

the

step

s be

low

. The

firs

t ste

p ha

s be

en d

one

for

you.

Step

Wha

t hap

pens

1O

xyge

n th

at w

e br

eath

e in

rea

ches

the

air

sacs

in o

ur lu

ngs.

It th

en

ente

rs th

e bl

oods

trea

m w

hich

tran

spor

ts it

to th

e he

art.

2Th

e he

art p

umps

the

bloo

d ric

h in

to

all

part

s of

our

bo

dy.

3O

xyge

n is

com

bine

d w

ith d

iges

ted

food

for

cells

to r

elea

se

. Was

te s

uch

as

pro

duce

d du

ring

resp

iratio

n en

ters

ano

ther

ser

ies

of b

lood

ves

sels.

4Th

e bl

ood

whi

ch c

onta

ins

carb

on d

ioxid

e pr

oduc

ed d

urin

g re

spira

tion

retu

rns

to th

e .

5Th

e he

art p

umps

the

bloo

d to

the

whe

re c

arbo

n di

oxid

e is

rem

oved

. A fr

esh

supp

ly o

f is

take

n in

.

oxyg

en

ener

gy

hear

t

lung

sox

ygen

carb

on d

ioxid

e


Body

Sys

tem

s:

Circ

ulat

ory

and

Resp

irat

ory

Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Ans

wer

s to

Add

ition

al Te

ache

r’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Bo

dy

Sy

stem

s: C

ircu

lato

ry a

nd

Res

pir

ato

ry

Co

nso

lid

atio

n W

ork

shee

t 4W

ha

t If

Our

Res

pir

ato

ry a

nd

Cir

cula

tory

Syst

ems

Bre

ak

Dow

n?

Ans

wer

the

follo

win

g qu

estio

ns.

a.

If a

per

son

has

diff

icul

ty b

reat

hing

bec

ause

of a

rea

ctio

n to

a tr

igge

r, w

hat

ailm

ent m

ight

this

pers

on h

ave?

b.

Nam

e tw

o co

mm

on tr

igge

rs fo

r th

e ai

lmen

t men

tione

d in

‘a’.

c.

W

hat c

ould

hap

pen

if th

e pe

rson

suf

ferin

g fr

om a

n at

tack

of t

he a

ilmen

t m

entio

ned

in ‘a

’ is

not t

reat

ed?

d.

Wha

t are

the

trea

tmen

ts fo

r th

e ai

lmen

t men

tione

d in

‘a’?

Com

plet

e th

e m

ind

map

bel

ow.

Fat,

chol

este

rol a

nd o

ther

sub

stan

ces

form

ing

plaq

ue o

n th

e ar

terie

s, na

rrow

ing

them

and

m

akin

g it

hard

er fo

r bl

ood

to fl

ow th

roug

h.

is c

ause

d by

can

be p

reve

nted

by

is c

ause

d by

can b

e tre

ated

with

Ast

hma

Ant

i-inf

lam

mat

ory

med

icat

ions

/dru

gs in

hale

d or

take

n or

ally

.

Art

erio

scle

rosis

Ado

ptin

g a

heal

thie

r lif

esty

le

by e

atin

g w

ell-

bala

nced

mea

ls an

d ex

erci

sing

regu

larly

Doc

tor-

pres

crib

ed d

rugs

an

d ch

oles

tero

l m

edic

atio

n

Unhe

alth

y lif

esty

le o

f a d

iet

high

in fa

t and

ch

oles

tero

l

Toba

cco

smok

e, h

ouse

dus

tmite

s in

bed

ding

/car

pets

, pol

len

grai

ns o

f flo

wer

s

(Cho

ose

any

two.

Acc

ept a

ll po

ssib

le a

nsw

ers.)

The

pers

on c

ould

lose

con

scio

usne

ss. /

The

per

son

coul

d di

e.

(Acc

ept a

ll po

ssib

le a

nsw

ers.)

Nam

e:

C

lass

:

Dat

e:

Ex

am P

ract

ice

Bo

dy

Sy

stem

s: C

ircu

lato

ry a

nd

Res

pir

ato

ry

The

pict

ure

belo

w s

how

s so

me

bloo

d ve

ssel

s.

Pro

cess

sk

ills

: Obs

ervi

ng, C

ompa

ring,

Ana

lysin

g

XY

Z

a.

Whi

ch o

f the

blo

od v

esse

ls, X

, Y o

r Z,

tran

spor

ts b

lood

ric

h in

car

bon

di

oxid

e?

[1 m

ark]

b.

Whi

ch o

f the

blo

od v

esse

ls, X

, Y o

r Z,

car

ries

bloo

d fr

om th

e he

art t

o th

e lu

ngs

to p

ick

up o

xyge

n?

[1 m

ark]

c.

Whi

ch o

f the

blo

od v

esse

ls, X

, Y o

r Z,

has

the

thin

nest

wal

ls?

[1 m

ark]

d.Stateon

efunc

tionofth

ethinw

allsinth

ebloo

dve

ssels

yo

u m

entio

ned

in ‘c

’. [1

mar

k]

Hin

t:H

ow a

re t

hin

wal

ls in

bl

ood

vess

els

usef

ul?

To a

llow

dig

este

d fo

od, o

xyge

n an

d w

ater

to p

ass

easil

y in

to th

e ce

lls. /

To

exch

ange

car

bon

diox

ide

and

was

te. (

Cho

ose

one

answ

er.)

Y X Z


Ch

ap

ter 1

GlossaryChapter 1: Body Systems: Circulatory and Respiratory

Artery A type of blood vessel with thick walls that transports blood away from the heart

Blood vessel A hollow tube that transports blood throughout the body

Capillary A type of small blood vessel with thin walls that allow the exchange of materials between blood and cells

Circulatory system A system made up of the heart, blood vessels and blood which works together with the respiratory system to ensure that all the cells in the body receive sufficient oxygen for respiration to occur

Diaphragm A layer of muscle just below the ribcage which contracts when we breathe in and expands when we breathe out

Exhale To breathe out

Haemoglobin A substance in blood which transport oxygen to cells all over the body and gives blood its red colour

Heart A muscular organ which pumps blood all over the body

Inhale To breathe in

Lung An organ which allows oxygen from the air to enter the body and into the blood, and carbon dioxide in the blood to leave the body into the air

Plaque Hard structures formed by the deposition of fat, cholesterol and other substances in the walls of arteries

Respiratory system The system made up of the nose, windpipe and lungs that allows the exchange of gases between our body and the air

Vein A type of large blood vessel with thin walls that collects blood from the body and transports it back to the heart

Windpipe A tube which connects our nose and mouth to our lungs and allows air to pass through it


Body

Sys

tem

s:

Circ

ulat

ory

and

Resp

irat

ory

why do we need air? - alston publishing house do we need air? ... exhaled air is warmer than inhaled...

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