PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
PRIMARY SCHOOL NEW FORMAT COMPETENCE EXAMS
MOCK EXAMINATION
STANDARD SEVEN-SCIENCE AND TECHNOLOGY
2024
TIME: 1:30HRS
INSTRUCTIONS
- This exam consists of sections A , B and C
- There are eight questions in total
- Answer all questions from each section
- Use a blue or black ink pen
- Show your working clearly
- Electronic devices are not allowed in exam room
SECTION A:
1. Choose the letter of the correct answer and write its letter in the brackets provided
i. Animals are divided into two groups, vertebrates and invertebrates. Which of the following does not have a backbone? (a) snake (b) squid (c) fish (d) frog (e) bird
ii. Air is a mixture of various gases found in the atmosphere. Which of the following gases is used to preserve drinks such as soda and juice? (a) Nitrogen (b) Oxygen (c) Carbon dioxide (d) Argon (e). Hydrogen
iii. Plants absorb water molecules from the soil through the roots to different places. What method does a plant use to absorb water? (a) Osmosis (b) diffusion (c) diffusion (d) absorption (e) distribution
iv. Examine the following diagram and then answer the question that follows.
(a) south (b) north (c) south and south (d) north and south (e) north and north
v. The Science teacher taught his fourth grade students the steps to conduct a scientific investigation. What is the second step of scientific investigation? (a) formulate a hypothesis (b) define the problem (c) interpret the results (d) conclude (e) analyze the data
v. What is the correct order of matter to separate by molecular tension from smallest to largest? (a) solid, gas, liquid (b) liquid, solid, gas (c) gas, liquid, solid (d) solid, liquid, gas (e) liquid, solid, gas
vii. As an IT specialist, if you are given the responsibility to advise weather forecasters, what type of antenna would you advise them to use to predict weather forecast changes?
(a) yagi-uda (b) loop antenna (c) dish (d) spot antenna (e) diameter antenna
viii. What part of the flower is represented by this drawing?
(a) pistil (b) stamen (c) sepals (d) corolla (e) stigma
ix. A chemical change is a change in matter that causes something new to appear. Which of the following is a chemical change? (a) melting of ice (b) melting of wax (c) burning of paper (d) melting of candle (e) vapor into water
x. In the diagram below, which part of the plant's food is manufactured?
2. Match the class of fire in LIST A with the causes of fire for each class in LIST B, then write the letter of the correct answer.
LIST A | LIST B |
- Class A
- Class B
- Class C
- Class D
- Class F
| A. Combustion of flammable gases such as butane, propane, methane. B. Cooking oil C. Burning of solid things like wood, paper, clothes D. Explosive and flammable liquids E. Fire of metals such as magnesium and iron-based substances. F. Electric shock |
3. Fill in the blanks
i) ………………….is the part of the brain that coordinates all voluntary actions
ii) The force that makes an object float is called………………………..
iii) A bicycle is made up of three types of simple machines, those machines are lever, ……..and axles
iv) ……………is a device that captures and transmits electromagnetic waves to communication devices such as radios, mobile phones and televisions
v) Write the formula for finding the current in a circuit if the voltage and resistance are known
SECTION B.
4. i) There are four main types of safety signs, name only two signs which are red and blue
ii) Explain the meaning of density
iii) State two characteristics of objects that float in water
5. i) What is the meaning of photosynthesis?
ii) Main switches are connected to what other equipment to protect circuits and buildings?
iii) A process by which molecules move from a higher concentration to a lower concentration is known as……………………………………………..
6. i) Briefly explain the meaning of internet
ii) Explain the differences between the networks
iii) Complete the following equation:
a) X represents
b) Y represents
iv) Why is the left ventricle more muscular than the right ventricle?
SECTION C
7. Write the names of the parts shown in Roman numerals
8. i) Find the density of an object with a mass of 640 grams and a volume of 800 cm3
ii) Find the mass of an object with a mass of 10 kg and an acceleration of gravity meters per second for 10 seconds.
PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
PRIMARY EXAMINATION SERIES
NEW FORMAT BASED-STANDARD SEVEN EXAMINATION
SUBJECT: SCIENCE AND TECHNOLOGY [
MID TERM -1 MARCH 2024
TIME: 1:40HR
Instructions:
- This paper consists of three sections; A, B and C with a total of 8 questions
- All answers must be written in blue or black ink.
- Remember to write your name and other particulars in the given spaces.
- Answer all questions according to the instructions in each section.
- Keep your work neat and smart.
- Cellular phones, tablets and calculators are not allowed in the examination room.
SECTION A (20 MARKS)
QUESTION No.1:
Multiple choices (10 marks)
Choose the most correct answer and write its letter in the spaces provided.
- Industrial fertilizers are very important in agricultural sector. Which of the following fertilizers is not made from nitrogen? A. NPK B. KAN C. SA D.DAP E. CAN [ ]
- Both sickle cell anaemia and albinism are hereditary disorders. However, these two disorders differ in such a way that; A. albinism can cause death while sickle cell cannot B. albinism leads to haemophilia while sickle cell leads to blood deficiency C. sickle cell anaemia is a disease while albinism is not D. albinism is the not a disease while sickle cell is not. E. sickle cell anaemia can be treated while albinism cannot. [ ]
- Urethra is a thin tube that plays important roles in both urinary system and reproductive system of males. Which statement is not correct about urethra? A. it connects the urinary bladder to the testes B. it connects the sperm duct to the penis C. it passes out urine during urination and sperms during copulation. D. it is the outlet of the urinary bladder E. it connects the urinary bladder to the penis. [ ]
- The modern advancement in science and technology has led to the invention of different complex machines. Which of the following statements is correct about a machine with high level of efficiency? A. it has high velocity ratio with low mechanical advantage B. it has zero force of friction C. it is not lubricated D. its mechanical advantage is much higher than the velocity ratio E. its effort force is greater than its load force [ ]
- James is a good designer who makes and paints safety sign posts in town. If he made sign X for wear safe mask and sign Y for corrosive chemicals; which colour do you think, he used to paint sign X and Y respectively? A. blue and green B. red and blue C. blue and red D. green and blue E. blue and yellow. [ ]
- Acids are corrosive and have sour taste. Which of the following statements gives a good meaning of acid? A. it gives hydrogen negative ions when dissolved in water B. it changes a red litmus paper to blue C. it gives hydrogen positive ions when dissolved in water D. it reacts with HCl to form salt and water only E. it changes lemon into vinegar [ ]
- Force is a push or pull of an object. Its unit is Newton which is also similar to the unit of weight. Which of the following units has the same meaning to that of Newton? A. Kgm/s2 B. joule/sec C. newton/kg D.msKg E. Kgm3/s [ ]
- Maimuna experieces headache every morning. Her mother told her that it might be either caused by her overnight studies or malaria attack. Scientifically, how do we regard the mother’s opinions? A. experimentation B. problem identification C. formulating hypothesis D.data interpretation E. hypothesis rejection [ ]
- “I am an energetic gas. I am the most abundant gas in the biogas.” I am made up of two types of elements which are and A. carbon and oxygen B. sulphur and hydrogen C. hydrogen and oxygen D.carbon and hydrogen E. hydrogen and nitrogen [ ]
- The stomata to plants are as gills to fish. However, the lungs to humans are as to birds. A lungs B. spiracles C.feathers D. skin E. nose [ ]
QUESTION No.2: Matching items (5 marks) Match the items from list A with the correspondents in list B and write its letter in the spaces provided.
QUESTION No.3:
Filling the blanks (5 marks)
- The smallest part of matter is called atom while a small particle of liquid or gas is called
- Write the formula of the main product of photosynthesis apart from oxygen
- The decayed remains of living things are collectively known as organic matter. What is the percentage composition of organic matter in the soil?
- What prevents the users from getting electric shock when an appliance develops an electric shock?
- State the range of temperature favourable for decaying raw materials by bacteria in the digester.
SECTION B (20 MARKS):
Short answer questions QUESTION No.4: (6 marks)
- In both Microsoft word and Microsoft excel, which command is used to convert the file format?
- In which feature of the email where the email users can find the unsent and incomplete messages?
- How do we call the application software that is used to search information from the webpage?
QUESTION No.5: (6 marks)
- Both AIDS and gonorrhea are sexually transmitted diseases. However, AIDS is caused by the virus called HIV while gonorrhea is caused by the bacteria called
- Which disease that if it is not controlled earlier can lead to the blocking of the urethra in males?
- The blood cancer also called leukemia affects the body tissue responsible for production of which type of blood cells?
QUESTION No.6: (8 marks)
- The blood circulatory system helps to regulate body temperature by distributing heat through the blood. Mention two parts of the body from which the heat is generated
- Electric circuit is a path along which the current flows. Which type of electric circuit in which too many electric appliances can reduce the amount of electric current?
- During the scientific project assigned to grade seven pupils, Magezi suggested to his friends to buy a device that can convert mechanical energy into electrical energy for their project. Which device do you think Magezi suggested?
SECTION C (10 MARKS)
QUESTION No.7: (6 marks)
- Calculate the voltage in a circuit with 8 ohms, 4 ohms and 0.5ohms arranged in series with an ammeter that reads 10 amperes.
- What will be the density of the wooden wood that has volume of 150cm3 and weight of 6N?
- Calculate the velocity ratio of the machine with efficiency of 25%, given that effort force is 60N and load force is 300N
QUESTION No.8: (4 marks) Observe the diagram below and answer the questions that follow.
i. State the principle which is verified in the set up above.
ii. What is the usefulness of the principle in (i) above in our daily lives?
UNITED REPUBLIC OF TANZANIZ
PRESIDENT’S OFFICE
REGIONAL ADMINISTRATIONS AND LOCAL GOVERNMENT
TERMINAL EXAMINATIONS -MAY 2023
SCIENCE & TECHNOLOGY
STANDARD SEVEN
Time 1:30 Hours
Pupil’s Name.......................................................................................................
Instructions
- This paper consists of section A and B with total of forty-five questions
- Answer all questions in each section
- For questions 1 – 40 put your choice in the box provided
- For question 41 – 45 write your answer by filling the spaces provided
- All communication devices and any unauthorized materials are not allowed in the examination room.
SECTION A
Choose the correct answer and write its letter in the space provided.
- Which among the following is not a benefit of sports to our health?
- They help in building strong muscles
- To protect the body from attacks by diseases and infections
- Causes blood pressure
- Provide recreation
- Help in maintaining a healthy body
- A solution of sugar and water is a necessary first aid to a victim of:
- Malaria and headache
- Diarrhea and vomiting
- Backbone and typhoid fever
- T.B and influenza
- Fracture
- Which of the diseases below is not sexually transmitted?
- AIDS
- Trichomona
- Syphilis
- Chlamydia
- Trachoma
- Which of the vitamins below is produced in the body by the action of sunlight?
- Vitamin A
- Vitamin B
- They prevent diseases
- They restore vitamins and minerals in the body
- They restore worn worn out cells in the body.
- What is the advantage of vaccinations?
- They reduce pain
- They cure diseases
- They prevent diseases
- They restore vitamins and minerals in the body
- They restore worn out cells in the body.
- Which of the following bacteria causes Turber Culosis (TB)?
- All bacteria in the air
- Bacilli
- Plasmodium
- Fungi
- Amoeba
- Which of the following statements is False?
- A laptop has an internal system unit
- A laptop has an external system unit
- The speaker is one of the computer output devices
- The monitor is part of the hardware of the computer
- Computers can help people carry out money transactions.
- The following activities destroy water sources except:
- Cutting down trees
- Burning forests
- Grazing a lot of livestocks around water sources
- Disposing chemical wastes in the water sources
- Fetching cooking water from water sources.
- The figure below shows a sewing machine. Study it then answer the questions that follow.
The correct naming of parts labelled A to E is
- Small wheel, axle, cord, large wheel and treadle
- Axle, hand wheel, belt, band wheel and treadle
- Needle, hand wheel, belt, treadle and pedal
- Head, hand wheel, rope, band wheel and treadle
- Non of the above
- It is most suitable to construct a pit latrine on a high ground because:
- It is easier to erect a wall
- Smell from the toilet will be far from the ground level
- It is difficult for it to wear out
- Ground water will be far from the level of the latrine
- The latrine will not be filled up in a short time
- The following are advantages of using educational computer games, except...........
- They bring reading, counting and writing into reality
- They help pupils to learn things by doing
- They motivate pupils to learn and work hard
- They make pupils to become addicted to computer games
- They make it easier for pupils to learn arithmetic using a calculator.
- Which are the most important conditions for seed germination? ..............
Soil, sunlight, and water
Soil, air and water
Moderate warmth, warmth, water and oxygen
Moderate warmth, soil and sunlight
Water, soil and carbon dioxide
- A class of living things/organisms which can live on land and in water is known as
- Amphibians
- Anthropods
- Fish
- Aves/birds
- Mammals
- Which of the following living things is not a mammal? ..........
- A bat
- A whale
- A lion
- A rabbit
- A crocodile
- Carefully observe the figure below (Figure 1) and answer the question that follows:
The organism shown in Figure 1 feeds on.........
- Honey
- Flesh
- Grains
- Matter from water
- Decayed matter
- The plant illustrated below grows in
- Dense forests
- Water
- In long grasses
- Deserts
- Mountains
- Why do some plants shed their leaves during winter?
- To retain their water
- To facilitate transpiration
- To store food
- To conserve the soil
- To nourish the soil
- Figure 3 below is a sketch of a flower
Which part of the flower attracts insects for pollination?
- 1
- 2
- 3
- 4
- 5
- The source of electricity in a dry cell is .......... energy
- Solar
- Mechanical
- Sound
- Magnetic
- Chemical
- Kibata used 50 Newton to push a wall all day without success. Which of the correctly describes this event?
- Kibata did work
- Kibata used a lot of force
- Kibata did not work
- Kibata did useful work
- Kibata used a small force
- If the incident angle is 60°, what will be the reflected angle in a plane mirror?
- 90°
- 40°
- 30°
- 60°
- 45°
- Study the figure then answer the question that follows.
If the current flowing through the circuit is 5 amperes, what is the resistance of the circuit (in ohms?)
- 100
- 50
- 10
- 4
- 0.4
- Mzee Juakali hanged a bar magnet in air. Which side of the earth will the north pole of the magnet point to?
- South
- North
- East
- West
- North-east
- Musa used 10 Newtons to push a wheelbarrow a distance of 5m. What amount of work (In Joules) did Musa do?
- 15
- 50
- 3
- 0.5
- 5
- In a scientific investigation, what leads a person (a scientist) to predict the outcome/to form a hypothesis?
- Understanding the problem
- A lengthy observation
- Seeing
- Conducting an experiment
- Touching
- Which type of computer network is shown below?