Science Questions and Answers - Class 7 End Term 3 Exam 2022 Set 1
QUESTIONS
Which one of the following is not a function of the mouth?
Cutting down pieces of food into smaller pieces
Absorbing nutrients from food
Digesting food
Production of digestive juice
Which one of the following has all the components of blood?
White blood cells, platelets and haemoglobin
Plasma, haemoglobin and red blood cells
Red cells, platelets, plasma and white blood cells
Plasma and red blood cells
The diagram below represents a model of the breathing system. What will happen if the string is pulled down wards?
Balloons will be deflated
Balloons will be inflated
The straw will drop in the tin
The bottle will break
The last type of teeth to be shed in human is mainly used for
Crushing and chewing
Piercing and tearing
Cutting and biting
Biting and grinding
The best method of controlling the communicable disease caused by plasmodium parasites is by
Draining stagnant water
Spraying insecticides
Sleeping under a treated mosquito net
Killing water snails with chemicals
Which of the following pairs consists of a social and health effect of drugs respectively?
Rape and accidents
Accidents and marital conflicts
Truancy and impaired judgement
Fits and withdrawal
Three of the following are ways which HIV virus can be passed from one person to another except
Sharing beds
Body fluids in contact
Mother to child during birth
Blood transfusion
In order to maintain strong teeth the following should be done except
Brushing after every meal
Eating fruits and vegetables
Drinking milk
Eating sugary biscuits
The following are physical changes that take place in girls during adolescence except
Wet dreams
Menstrual flow
Broad hips
Breaking of voice
Which property of matter is definite in all states?
Mass
Volume
Shape
Size
In an experiment to show refraction of light, pupils collected the following materials.
Clear water
Glass
Mirror
Ruler Which of the following materials was not necessary?
Glass
Clear water
Ruler
Mirror
The following are domestic uses of water except
Cleaning the house
Sprinkling houses
Bathing
Watering crops
The diagram below shows a weather instrument used to measure a certain aspect of weather. The main reason for raising the instrument 30cm above the ground is to
Improve the efficiency of reading
Prevent running water from splashing into the container
Make it visible
Prevent collected water from evaporating
Which one of the following materials is not necessary when modelling the solar system?
Plasticine
Wires
Manila papers
Sand
The following are characteristics of clouds.
Look like bundles of cotton cool
Appear low in the sky
White in colour
Appear high in the sky
A sign of heavy rains Which characteristics are for nimbus clouds?
i and iv
ii and iii
ii and v
ili and v
Pupils in class seven set-up an experiment shown below. What will happen to the coin if the card is pulled abruptly towards the direction showed by the arrow? It will
Fly in the air
Fall in the opposite direction
Fall in the glass
Move with the card
Spreading rough materials on the road mainly
Reduce friction
Make the road function
Increase friction
Shorten distance
The following are units for measuring the quantity of matter in a substance except
Newtons
Kilogram
Tonnes
Gram
The diagram below represents two pupils with different masses balancing on a see-saw. For the see-saw to balance
Peter should move closer to the pivot
Both Peter and Robin should move equal distance from the pivot
Robin should move closer to the pivot
Peter should stand on the pivot
Which one of the following is not a reason for proper storage of simple tools?
Safety of the people
Tidiness of the tool
To make the tool last longer
Safety of the tool
Which of the following methods of food preservation is correctly classified as traditional and modern methods?
Traditional
Modern
A
use of ash
salting
B
freezing
drying
C
salting
use of honey
D
smoking
use of low temperature
A child was found with the following signs and symptoms.
Pot belly
Sores at the corners of the mouth
Swollen legs and face
Thin brownish hair The child was likely to be suffering from
Kwashiorkor
Anaemia
Marasmus
Rickets
A pupil in class 7 carried the following for lunch:- black night shade and Ugali, what should be added to make it a balanced diet?
Kales
Pawpaw
Termites
Sorghum
The set-up below was used by class 6 pupils to investigate a certain property of soil. The soils represented by X, Y and Z respectively are
X
Y
Z
A
loam
sand
clay
B
clay
loam
sand
C
sand
loam
clay
D
sand
clay
loam
Which one of the following is not an advantage of applying organic manure to the soil? They
Release nutrients slowly
Bind soil particles
Release specific nutrients
Improve soil-air circulation
The set-up shown below can be used to investigate the presence of a certain component of soil. The soil component being investigated
Water
Air
Organic matter
Mineral salts
Which one of the following pairs of gases makes up approximately 79% of the volume in the air?
Nitrogen and carbon dioxide
Oxygen and carbon dioxide
Nitrogen and oxygen
Nitrogen an rare gases
Which one of the following mixtures cannot be separated?
Milk and diesel
Iron fillings and salt
Flour and sugar
Glucose and sugar
Which one of the following does not affect floating and sinking of an object?
Weight
Size
Shape
Type of material
The diagram below represents the processes W.X, Y and Z that are involved in change of states of matter. The processes that are as a result of loss of heat to the surrounding are
W and X
Y and Z
W and Z
W and Y
The following are signs and symptoms of a certain water borne disease.
Diarrhoea and vomiting
Fever
Severe abdominal pains
Dry and inelastic skin The disease with the above signs and symptoms is likely to be
Bilharzia
Malaria
Cholera
Typhoid
Four pupils classified crop pests and field pests as follows. Paul - aphids, white ants, stalk borers and rats Stephen - weaver birds, rats, cutworms and army worms John- aphids, weevils, cutworms and army worms Stella-rats, rodents, weevils and white ants Who classified storage pests correctly?
Stella
Paul
John
Stephen
Which of the following is an effect of water pollution to animals?
Interferes with absorption of minerals
Suffocation of aquatic animals
Interferes with soil acidity
Blockage of roots
The chart below shows classification of crops. Which crops can be represented by Q, P and R respectively?
Barley, coffee, pawpaw
Carrots, beans, spinach
Simsim, Irish potato, onions
Tea, cabbage, oranges
Which statement is correct about germination?
Radicle comes out through the Microphyle
The seeds absorbs water through the helium
Plumule comes out through the Microphyle
The seed bursts just before swelling
Which one of the following groups consists of only plants with roots similar to coconut?
Groundnuts, barley, rice
Sorghum, maize, onions
Arrowroots, wheat, cassava
Green arams.milet carrots
The following are some characteristics of flowers.
Du!! and small in size
Large in size and brightly coloured
Feathery stigmas
Sticky pollen grains
Large quantity of pollen grains Which one of the above characteristics are wind pollinated flowers?
(i). (iv) and (v)
(i)(iii) and (iv)
(1) (iii) and (v)
(ii) (iv) and (v)
Fish meal and lucerne supply animals with
Fats and oils
Mineral salts
protein
Carbohydrates
Which one of the following groups of practises can be controlled by deworming animals?
Lice, tapeworms, roundworms
Ringworms, tapeworms and roundworms
Ticks, fleas and tsetse flies
Lungworms, liver flukes, hookworms
The following are some characteristics of certain animals.
Body covered with dry scales
Breath through lungs
Lay fertilized eggs
Have varying body temperatures Which one of the following pair of animals has the above characteristics?
Shark and tortoise
Platypus and spiny ant eaters
Crocodile and snake
Newt and lizard
The chart below shows some farm animals and their products. Which products are represented by X and Y
X
Y
A
milk
mohair
B
wool
milk
C
mutton
beef
D
beef
milk
Which one of the following is not a type of rotational grazing?
Tethering
Paddocking
Herding
Strip grazing
Which one of the following should be provided to workers in noisy factories and industries as a pair of their uniform?
Ear bands
Gas masks
Ear plugs
Cotton swabs
The diagram below shows an old man warming himself by the fire side Which method of heat transfer enabled the hands and feet to get warmed?
feet
hands
A
radiation
convection
B
convection
radiation
C
conduction
convection
D
radiation
conduction
Uses of light include all the following except?
Reading comfortably
Encouraging posts
Taking photographs
Making plant foods
Which one of the following is not a safety measure against lightning?
Fitting lightning arrestors in buildings
Walking in open fields when it's raining
Wearing shoes with rubber soles
Keeping away from walls of buildings when it is raining
Which one of the following components of the environment covers the largest part of earth's surface?
Soil
Air
Water
Plants
Babies born of smoking mothers are not likely to be
Less resistant to diseases
Fast learners
Small in size
Underweight
Which one of the following will behave the same way as a tin can when placed near a magnet?
Silver coin
Copper wire
Zinc
Steel wool
Which one of the following materials would be suitable in forming shadows when light is shone to them?
Mirror, wood, stone
Kerosene, tracing paper, frosted glass
oiled paper, milk, mirror
Mirror, clean water, clean glass
MARKING SCHEME
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Last modified on Friday, 04 February 2022 08:27