Std7 Science Exam 2016

Which of the following is a list of items found in a first aid kit?
1. Bandage, scissor, disinfectant
2. Scissor,rubbing stuff, condom
3. Bandage, condom, birth control pills
4. Rubbing stuff, birth control pills, disinfectant
Which of the following signs of puberty is matched with the sex in which it occurs from the above table?
1. A
2. B
3. C
4. D
Which of the following organisms is a decomposer?
1. Fungus
2. Hyena
3. House-fly
4. Vulture
The set-ups below show salt particles in water. In which of the set-ups will the salt dissolve fastest?
Pupils were advised to always put on plastic gloves when helping injured people. Which of the following could be a reason for the advice?
1. To prevent the hands from coming into contact with blood
2. To protect the hands from injuries
3. To keep the hands clean
4. To keep the hands warm
Which of the following is a natural object?
1. tyre
2. petrol
3. glass
4. cloth
Which of the following objects is a source of heat energy?
1. Jacket
2. Moon
3. Radio
4. Sun
On which day did the clothes take the longest time to dry?
1. Monday
2. Tuesday
3. Wednesday
4. Thursday
Which of the following statements explains why fish are able to live in water?
1. They can breathe under water
2. They are warm blooded animals
3. They give birth to live young ones
4. They use their scales for swimming
A magnet is placed in a plastic plate containing a mixture of sand and iron filings. Which observation will be made when the magnet is pulled out of the mixture?
1. Sand will be repelled from the magnet
2. Sand will be attracted to the iron filings
3. Iron filings will get covered by the sand
4. Iron filings will be attracted to the magnet
The road sign above was placed along a road near a school. Which statement is correct about the sign?
1. Children are crossing the road
2. children are playing on the road
3. children are walking along the road
4. children and their mothers are crossing the road
Which of the following actions may cause visual impairment?
1. putting on sun glasses
2. running in cold water
3. spilling chemicals into eyes
4. travelling at the back of an open van
Which of the following meals is most likely to lead to obesity when eaten over a long period of time?
1. Samp with beans
2. Rice with cabbage
3. Maize - meal with spinach
4. Fried chips with fried chicken
Through which process do light rays from the object reach the student's eye?
1. Refraction
2. Reflection
3. Dispersion
4. Absorption
The diagram above shows part of the human skeletal system. Which body organ is protected by the part labelled X?
1. Bone marrow
2. Brain
3. Lungs
4. Spinal cord
Which of the following materials can be used to make a lightning conductor?
1. concrete
2. copper
3. iron
4. wood
Which of the following objects uses an eletric motor?
1. Iron
2. Kettle
3. Television
4. Wall clock
Which of the following objects produce static electricity when rubbed against each other?
1. Duster and chalk board
2. Plastic pen and cloth
3. Wooden sticks
4. Hands
Which body system breaks food into small particles?
1. Reproductive
2. Nervous
3. Digestive
4. Circulatory
A plant is placed in a closed dark cupboard for 48 hours. Which of the following processes will not take place?
1. Growth
2. Production of food
3. Production of energy
4. Absorption of nutrients
Which of the following is a characteristics of the imaged from the above diagram?
1. it is upside down
2. it is larger than the object
3. its left side appears to be on the right side
4. it is formed on the same side of the mirror as the object
A force is applied on an object. Which of the following is not likely to change?
1. the size of the object
2. the mass of the object
3. the speed at which the object travels
4. the direction in which the object moves
The diagram above shows part of a female reproductive system. Which of the following takes place at the part labelled Y?
1. growth of a zygote into an embryo
2. development of the placenta
3. implantation
4. fertilisation
The digestive system of a human being is not able to produce bile. Which part of the digestive system is likely to be damaged?
1. liver
2. stomach
3. pancreas
4. small intestines
Which of the following household chemicals is a solid?
1. oil
2. paraffin
3. soap bar
4. cough syrup
Which of the following is not part of a female reproductive system?
1. cervix
2. kidney
3. oviduct
4. womb
A tree has brightly coloured fruits. What is the main mode of dispersal for its seeds?
1. animal
2. self
3. water
4. wind
In which of the following processes is an electromagnet used
1. making bicycle dynamos
2. lifting alminium objects
3. making compass needles
4. separating ironfrom copper sheets
The diagram below shows part of a human ear.

What is the function of the part labelled W?
1. to amplify sound
2. to keep the body balanced
3. to carry electrical messages to the brain
4. to pass vibrations to the three small bones
Which form of energy is contained in the batteries of a radio?
1. chemical
2. heat
3. kinetic
4. sound
What does the picture above show?
1. community
2. habitat
3. population
4. species
Which of the following is a sexually transmitted disease?
1. goitre
2. herpes
3. polio
4. ringworm
Which of the following is a reason for covering the switch with plastic?
1. to make the switch last longer
2. to protect the switch from dust
3. to reduce the amount of electricity used
4. to prevent water from coming into contact with the switch
What are the names of the circuit symbol labelled X and Y?
1. Bulb and cell
2. Switch and Cell
3. Bulb and Battery
4. Switch and Battery
Which of the following forces is acting on the ship?
1. Gravitational force
2. Electrostatic force
3. Magnetic force
4. Normal force
The table below shows percentages of gases in atmospheric air.

Which letter represent oxygen?
1. W
2. X
3. Y
4. Z
Why is it difficult for a car to start moving on a road covered with ice?
1. the weight of the car is reduced
2. the friction is not enough for the car to move
3. the car does not put enough pressure on the ice
4. the car does not have enough power to pull the wheels
Which chemical element is represented by the symbol C?
1. copper
2. chlorine
3. carbon
4. calcium
In which weather condition do small water droplets float in air?
1. storm
2. rain
3. mist
4. dew
Iron rusts when it is exposed to air and water. Which statement is correct about iron and rust?
1. Iron is an element and rust is a mixture
2. Iron is a compound and rust is a mixture
3. iron is an element and rust is a compound
4. Iron is a compund and rust is an element
What could be the temperature of water in cups K and L?
1. Cup A is 70 and Cup L is 50
2. Cup A is 5 and Cup L is 80
3. Cup A is 60 and Cup L is 0
4. Cup A is 0 and Cup L is 5
Which phase of the moon will a person in town X observe?
1. Full moon
2. New Moon
3. Last quater moon
4. First quater moon
A baby was immunised against a disease at 2 months. The baby was later immunised for the same disease at 9 months. Which disease was the baby immunised against?
1. Diphtheria
2. Hepatitis B
3. Measles
4. Polio
Which of the following changes to the circuit will not cause brightness of the bulb to change?
1. replacing the switch with bulb
2. removing one cell from the circuit
3. adding a similar bulb parallel to the bulb in the circuit
4. adding a similar bulb in series with the bulb in the circuit
Which of the following is an energy giving food?
1. banana
2. eggs
3. fish
4. spinach
Which water sample is mostly likely to be pure water?
1. P
2. Q
3. R
4. S
Why would one boil water from a well before using it for bathing?
1. to make water soft
2. to remove large soil particles
3. to make the water colourless
4. to make soil particles settle at the bottom
Which of the following substances is opaque?
1. Air
2. Glass
3. Pure water
4. Concrete wall
Which of the following separating techniques can be used to obtain salt from salty water?
1. Decanting
2. Evaporation
3. Filtration
4. Sedimentation
Which of the following conclusions can be made about the strength of the springs?
1. E is the strongest
2. E and F are equal
3. F is weaker than G
4. G is stronger than E
Which of the following is a possible conclusion about the two liquids?
1. X and Y are both alkaline
2. X is acidic and Y is neutral
3. Y is acidic and X is alkaline
4. X is neutral and Y is alkaline
There is lots of stagnant water in Kau village and the atmospheric temperature is very high. A certain disease spread quickly in this village. Which of the following is likely to be the disease?
1. Diabetes
2. High blood pressure
3. HIV/AIDS
4. Malaria
Which property of air is being demostrated?
1. Air supports burning
2. Air dissolves in water
3. Air rises when heated
4. Air expands when heated
Which of the following pairs of objects can be attracted by a magnet?
1. plastic ruler and steel nail
2. plastic ruler and glass rod
3. glass rod and iron filings
4. steel nail and iron filings
Which of the following actions uses heat energy?
1. drying clothes
2. seeing objects
3. forming images
4. producing sound
Which of the following instruments refracts rays of light?
1. car mirror
2. periscope
3. solar cooker
4. magnifying glass
Which of the following statements is true about most non-metals?
1. they break easily
2. they are shiny when cut
3. they have high melting points
4. they are good conductors of electricity
What is the name of simple machine X?
1. gear
2. lever
3. pulley
4. wedge
To which food group do potatoes belong?
1. protective
2. body building
3. energy giving
4. supplementary
Which term describes a group of organs that work together as a unit?
1. cell
2. muscle
3. nerve
4. system