50265534 Modul Science Form 2
Transcript of 50265534 Modul Science Form 2
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MODUL FORM 2
2.1 THE WORLD THROUGH OUR SENSESSKIN
1. Label each part of the skin with a suitable word from the following list.
Heat receptor Epidermis Cold receptor Hair Fat layer Dermis
Pain receptor Sweat gland Touch receptor Pressure receptor
e
b
h
g
c
d
f
j
a
i
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NOSE
2. Label the part of the human nose with the following words.
B
C
3. (a) State the stimulatory reaction in the nose using the words given below :
1.Nostril 2.Nasal Cavity 3.Receptor Cell
Smell Smell receptor Impulse
Impulse
Brain Analysis Dissolved in mucus Response
1
234
A
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3(b) Match the different parts in the nose their function
i
ii
iii
iv
v
Smell
Mucus
Receptor
Brain
Detection
A Smell is good/bad
B Analyses messages and gives the appropriate response
C Chemicals in the air stimulate the nose
D Dissolve the chemicals in the air
E Send messages to the brain about stimulus
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TONGUE
4. Label each part P, Q, R and S using the following words.
P
(i) The tongue is covered with many tiny structures called the ____________(ii) The taste buds are able to detect the taste of the food if the food can
dissolve in ______________
Q
R
S
P
Sweet Sour Bitter Salty
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HUMAN EAR
5. The diagram below shows the cross section of a human ear. Label the t parts using theword given in the box.
Pinna Ear canal Eardrum Ossicles
Oval windows Semicircular canal cochlea
Eustachian tube
A B C
EH G F
D
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6. Match the different parts in the ear to their functions
Eardrum Balance the air pressure on both sidesof the eardrum
Pinna
Ossicles
Cochlea
Eustachian tube
Oval window
Auditory nerve
Transfers the vibration from the
ossicles to the cochlea
Detect the vibration and converts
them into nerve impulse
Send the messages to the brain
Collect and directs sound waves
(vibrating air) into the auditory canal
It vibrates at the same frequency as
the sound waves and transfer
Amplified the vibration and transfer
vibrations to the ossicles
Q
S
U
II
III
IV
V
VI
VII
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7. State the functions of these structures in the ear
(a) Eardrum : ___________________________________________
___________________________________________
(b) Ossicles : ___________________________________________
___________________________________________
(c) Pinna : ___________________________________________
___________________________________________
(d) Cochlea : ___________________________________________
___________________________________________
(e) Eustachian tube : ________________________________
___________________________________________
(f) Auditory nerve : _____________________________________
__________________________________________
(g) Oval window : _____________________________________
__________________________________________
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EYE
8. The diagram shows the human eye.Label structures P, Q, R, S and T using the following words:
Cornea Iris Retina
Pupil Lens
P:
T:
Q:
R:
S:
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9. Draw lines to show the correct match between the structuresand their functions.
PART FUNCTION
P
S
Q
R
T
i. Controls amount of light entering the eye
ii. Helps to focus the light on the retina
iii. Focuses the light to form an image on the retina
iv. Controls the size of the pupil
v. Receives light stimuli and changes the stimuli tonerve impulses
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10. State the function of the following stuctures:
Cornea ………………………………………………………………………………
Iris ………………………………………………………………………………
Pupil ………………………………………………………………………………
Retina ………………………………………………………………………………
Lens ………………………………………………………………………………
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11. Fill in the blank using words given in the box.
1 The ………………………… receives light stimuli and changes the stimuli
to nerve impulses
2 The …………………………. helps to focus the light on to the retina
3 The …………………………. focuses the light to form an image on theretina.
4 The …………………………. controls the size of the pupil
5 The ………………………….controls amount of light entering the eye
Cornea Iris Retina
Pupil Lens
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2.2 NUTRITION
HUMAN DIGESTIVE SYSTEM
1. Label the parts of the human digestive system in the following words.
E
B
F
I
H
G
D
C
A
Liver Small intestine Gall bladder Pancreas Large intestine
Oesophagus Stomach Mouth Salivary glands
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HUMAN DIGESTIVE SYSTEM
2. Draw lines to show the correct match between the structures and their
functionsDraw the lines as shown below
D
E
G
I
iii Produces digestive enzymes such asamylase, protease and lipase
ii Channels food to the stomach. This action is
called peristalsis
C i Produces bile
iv Digestion of fat, protein and starch and
absorption of food
v Digestion of protein begins
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HUMAN DIGESTIVE SYSTEM
3. Fill in the blanks with suitable words in the box.
1. The enzyme in saliva, _____________________ breaks down the starch
molecules into maltose
2. The stomach secretes gastric juice which contains _______________ and _________________ digestion of proteins
3. Bile is produced by __________________ and kept in the ___________
4. What are the end products of digestion of
a) Carbohydrates ? __________________
b) Proteins? ________________________
c) Fats? _______________________
Fatty acids and glycerol, salivary amylase, liver, glucose,protease, gall bladder, amino acids, dilute hydrochloric acid,
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2.3 INTERDEPENDENCE AMONG LIVING ORGANISMSIN THE ENVIRONMENT
CLASSIFICATION OF ANIMALS AND PLANTS
1. Fill in the blanks using the words given
a)Plants
Flowering i
ii
v viiv
iii
Fungi
Fish, Monocotyledons, Amphibians, Mosses, Non-flowering, Dicotyledons,
Fern, Algae, Mammals. Birds, Reptiles, Amphibians ,Birds, Reptiles, Mammals,
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b)
c)
Vertebrates
i iiFish
iii iv
Vertebrates
Warm-blooded Cold-blooded
i
iv viii
ii
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CLASSIFICATION
2. Based on your observation state one characteristic of each organism.
a b
c
d
e f
g h
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i j
k
l
m
j
n
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3. Classify the organisms into two groups based on their common characreristics
P Q R S
Common aa
characteristics
Letter ofThe organisms
O
P
a b
i ii
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CLASSIFICATION OF PLANTS
4. The diagram shows the flowering plants.Label structure P, Q, R, S, T, U, A, B, C, D and E using the following words
P
Q
R
S
T
DICOTYLEDONS
fibrous root, tap root, one cotyledon, two cotyledons, network ofveins, parallel veins, soft and non woody, hard and woody,
flower parts in threes, flower parts in fours or fives
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MONOCOTYLEDONS
A
B
C
D
E
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5. Draw lines to show the correct match between the phrase andexplanation on Interdependence among living organism.
Draw the lines as shown below
PHRASE EXPLANATION
Population C
Species B
Community D
Environment E
iii Different communities interact with with oneanother and their environment in a habitat
ii Made up of living and non-living components
Habitat Ai A group of similar living organisms
iv The natural home of an organism where itlives and reproduces
v A group of individuals of the same speciesthat live and reproduce in a habitat at thesame time.
Ecosystem Fvii Made up of different populations of organisms
living together and interacting with oneanother in the same habitat
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FOOD WEB
6. Fill in the blanks using the words from the following list
1 ____________________ are living organisms that are able to make theirown food
2 ____________________ are living organisms that are not able to maketheir own food
3 ____________________ are living organisms that feed on the remains ofdead organisms
4 ____________________ is a network of interconnected food chains
5 ____________________ shows the food relationship among living
organisms
6 _____________________ shows the different number of organisms ina food chain.
Food Chain, Producer, Consumer, Decomposer,
Food web, Pyramid of Number
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TYPES OF INTERACTIONS BETWEEN LIVING ORGANISMS
7 Use letters to complete the phrase on types of interaction between
living organisms
C__ MM__NS__LISM
P__ RA__ITI_M
CO__P___TI __IO__
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PHOTOSYNTHESIS
Photosynthesis is the process in which green plants use light to produce food.
8. Write the word equation for photosynthesis.
c+ d +
carbon dioxide , oxygen
water , glucose ,
sunlight, chlorophyll
a b fe
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2.4 WATER AND SOLUTION
Physical characteristics of water
1. Diagram 1 shows the changes in the state of water.
Diagram 1
On diagram 1, label P, Q, R, S and T using the following words.
Fill in the blank using the word from the box given.
( a ) Water can exist in …………………………… states.
( b ) An ice cube is water in the ………………… state.
( c ) Steam is water in the ……………………. state.
( d ) We drink water in the ………………….. state.
(e ) Liquid water …………………. to form ice.
( f ) Water is …………………. tasteless and neutral.
( g ) The pH value of pure water is ……………
( h ) The density of water is ……………… g/cm3
Freezing Liquid Solid Boiling Gas
R: S: T:
P: Q:
solid
7
liquid
three
colourless
freezes1
gas
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The composition of water
2. Diagram 2 shows the electrolysis of water.
On
Diagram 2
On diagram 2, fill in the blanks using the following words.
Cathode Hydrogen Oxygen positive
Anode water Sulphuric acid negative
The…………
is the electrod
that is
connected
to the…………
terminal of a
battery.
The …………..
is the electrode
that is
connected tothe……………
terminal of a
battery
……………….. gas is discharged
………………
gas is discharged
………………
+ dilute ………….
………………
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Solution and Solubility
3. Diagram 3 shows the process of making a solution.
Diagram 3
On diagram 3 , label the substances using the following words.
4. Diagram 4 shows the making of a cup of hot coffee.
Hotwater
Diagram 4
Based on diagram 4, determine the solute , solvent and solution in the hot coffee.
a. Solute : ……………………………
b. Solvent : ……………………………
c. Solution: ……………………………
x
z
Solute Solvent Solution
Hot coffee
sugar
Black coffee
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5. Diagram 5 shows three beakers containing solutions and their types .
P
Q
Diagram 5 R
Draw lines to show the correct match between the solution in the beakers and theirtypes.
SATURATED SOLUTION
DILUTE SOLUTION
CONCENTRATED
SOLUTION
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Methods of water purification
6. Diagram 6 shows methods of purification.
…………………………… ……………………………………
Diagram 6
On figure 6, name the method and label the apparatus used for each picture using thefollowing words.
Filter funnel Thermometer Measuring cylinder
Distillation Round bottom flask Conical flask
Filtration
a
b
d
e
c
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2.5 SIMPLE MACHINE
1. Diagram 1 shows a first class lever.
Label J, K and L using the following words:
Diagram 1
Effort Fulcrum Load
K:
J:
L:
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3. Diagram 3 shows a third class lever.
Label X, Y and Z using the following words:
Diagram 3
Effort Fulcrum Load
X:
Z:
Y:
Ice tongs
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4. Draw lines to show the correct match between the classes of levers and thesimple machines.
CLASS OF LEVER SIMPLE MACHINE
First class
Second class
Third class
stapler
scissors
nutcracker
X
Y
Z
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5. Fill in the blanks using words given in the box.
1 A stapler is an example of the ………………………………class lever.
2 A scissors is an example of the …………………………….class lever.
3 A nutcracker is an example of the ………………………….class lever.
4 A wheelbarrow is an example of the ……………………….class lever.
5 An ice tongs is an example of the …………………………class lever.
first second third
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