PRESIDENT OFFICE REGIONAL ADMNISTRATION

AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES 

COMPETENCE BASED ASSEMENT

PHYSICS FORM ONE 

MID TERM EXAMS-AUGS/SEPT – 2024

031

Time: 2:30Hours

INSTRUCTIONS

1.               This paper consist of section A, B and C with total of ten (10) questions
2.               Answer all questions
3.               Section A carries 15 marks, section B 70marks and section C caries 15 marks
4.               Where necessary the following constants may be used

Acceleration due to gravity, g =

SECTION A

Answer ALL questions.

(i) A pump raise 100kg of water steadily through a height of 30m in 10s, what is the power developed by the pump?

1.  300J/s
2.  1000W
3.  3000W
4.  1200W.

(ii) A particle is thrown upward with some kinetic energy. What happened to its kinetic energy at the highest point or height it reaches?

1.  Its kinetic energy is lost
2.  It’s all kinetic energy is absorbed by air
3.  It’s all kinetic energy is converted to potential energy
4.  Its kinetic energy remains the same

(iii) Tiny particle that makes matter are called

1.  Molecules
2.  Element
3.  Atoms
4.  Electrons

(iv) Atoms in solid are closely packed together due to:-

1.  Cohesive force
2.  Adhesive force
3.  Capillarity
4.  Bond

(v) Atmospheric pressure is calculated by the 

1.  Height of water column is barometer
2.  Height of mercury column in barometer
3.  Height of lime column in barometer
4.  Height of oil column in barometer.

(vi) Amount of pressure in liquid decrease with 

1.  Volume
2.  Base area
3.  Mass
4.  Depth.

(vii) Accurate volume of a liquid can be measure by using 

1.  Volumetric flask
2.  Pipette
3.  Burette
4.  Cylinder.

(viii) A factor which affect sinking or floating is

1.  Volume
2.  Density
3.  Mass
4.  Surface area.

(ix) A part of shadow which receives no light from source is called?

1.  Shadow
2.  Eclipse
3.  Penumbra
4.  Umbra

(x) When Earth is between the Sun and the Moon, we get?

1.  Earth eclipse
2.  Moon eclipse
3.  Solar eclipse
4.  Venus eclipse.

2. Match the following

SECTION B

3. (a) Mention at least seven types of force.

    (b) What is stretching and restoring force?

4. (a) Mention five importance of first Aid

     (b) List five procedures to help a victim with small cut or wound.

5. (a) Define relative density

    (b) A clean dry beaker has a mass of 400g. 112cm³ Kerosene is poured into the beaker with help of burette, if the mass of beaker and kerosene is 500g, find density of kerosene.

6. (a) State Hooke’s law

    (b) Identify applications o elasticity in everyday life.

7. A 50kg girl runs up a staircase of 50 steps each. Steps in 15cm in height, in 5 second.

1.      Find work done against gravity by the girl
2.     At what power is she running

8. (a) State two factors which pressure in liquids depends 

    (b) Explain why

1.     Sharp knife cuts easily than blunt knife
2.   An elephant cannot easily sink in mud
3.       Tyres of a tractor are wide

9. (a) Distinguish between

1.     Floating and sinking
2.   Weight and up thrust

    (b) Why does hydrometer have wide bulb and Narrow stem.

SECTION C

10. An empty petrol tin has a mass of 0.75kg. When full of petrol, the tin and petrol has a mass of 7.75kg. If the density of petrol is 700kg/m³, find volume of petrol in tin. 

THE PRESIDENT’S OFFICE

REGIONAL ADMINISTRATIVE AND LOCAL GOVERNMENT

FORM ONE EXAMINATIONS SEPT 2022

NEW NECTA FORMAT

PHYSICS

Instructions 

1. This paper consists of ten (10) questions. Attempt all question
2. This paper has three section A, B and C

Where necessary use the following constants 

Density of water = 1000kg/m³

Acceleration due to gravity = 10N/kg

SECTION A

1. For each of the items (i) – (x) choose the correct answer among the given alternatives

1. A person who studies physics is known as

1. Physician
2. Scientist
3. Technician
4. Physicist

2. A special room where scientific experiments are conducted is known as

1. Science Room
2. Hospital
3. Laboratory
4. Factory

3. The following are Units of fundamental quantities except

1. Kilograms
2. Kelvins
3. Microseconds
4. Watts

4. One of the following instruments is not used to measure volume

1. Vernier calipers
2. Pipette
3. Burrete
4. Measuring cylinder

5. The force of attraction between molecules of different materials is known as

1. Cohesive force
2. Adhesive force
3. Surface tension
4. Viscous drag

6. A stone is placed in a measuring cylinder as shown below

The volume of the water in the cylinder before adding the stone is 15cm³and the stone has a mass of 90g

What is the density of the stone?

1. 1.0g/cm³
2. 1.2g/cm³
3. 1.5g/cm³
4. 6.0 g/cm³

7. When pollen grains are placed on a slide having water and observed under a microscope, they are seen to move in a zigzag pattern. This kind of motion is known as

1. Kinetic theory
2. Brownian motion
3. Relative motion
4. Static motion

8. In the scientific process the variables that are known during experimentation

1. Control variables
2. Independent variables
3. Dependent variables
4. Neutral variables

9. The most important concept of physics as a subject is

1. Relate matter to energy
2. Relate matter to bonding
3. Relate Energy to composition of matter
4. Relate energy to break up of matter

10. One of the following does not works basing on the law of floatation

1. Air balloon
2. Ship
3. Beam balance
4. Submarine

2. Match items in list A with correct response in List B

SECTION B

3. (a)A form one student was told to go the laboratory per an experiment, identify four ways she should conduct herself so that the laboratory runs smoothly during her time in the laboratory

(b)Explain how Physics is related to the following

1. Mathematics
2. Biology

4. (a)What do you understand by the statement that relative density of oil is 0.9

(b)What explanation can you give for why Kerosene floats in water?

(c)A density bottle weighs 40g when empty and 65g when filled with water. When filled with another liquid it weighs 55g. What is the density of the liquid?

5. (a)Differentiate between Cohesive force and Adhesive forces

(b)In the space provided below a container filled with water in which three capillary tubes of different sizes are immersed and show how the water rises in the tube

(c) Identify three applications of Osmosis 

6. (a)State Archimedes principle

(b)A body of weight 15N in our weight 9N when completely Immersed in a liquid of density 0.8g/cm³

1. What is the apthrust acting on the body
2. What is the volume of displaced liquid

(c)In the space provided below, draw a well labelled diagram of a hydrometer

7. (a)State hooke’s law and express it in mathematical form

(b)An object with mass 100g was hung from the spring with a force constant 20N/m

How far in centimeters would the spring stretch

(c)What is the mass of an object that stretches the spring 25cm long? (take g=0.01N/g)

8. (a)Identify four characteristics of the gravitational force.

(b)A stone of mass 2kg was taken to the moon where the acceleration due to gravity is 

One-sixth that of the earth 

1. What is the mass of the stone one the moon?
2. What is the weight of the stone on the moon

9. (a)What is a scientific method

(b)Use diagrams to name all the steps involved in the scientific investigation.

(c)Name five (s) items found in a first aid kit.

SECTION C

10. (a)Draw the following apparatus and state its uses

1. Beakers
2. Thermometer
3. Micrometer Screw gauge

(b)Draw warning symbols for the following 

1. Flammable
2. Radioactive Danger

THE PRESIDENT’S OFFICE

REGIONAL ADMINISTRATIVE AND LOCAL GOVERNMENT

FORM ONE EXAMINATIONS  SEPT 2022

NEW EXAM FORMAT

031 PHYSICS

TIME: 2:30 HRS       

INSTRUCTIONS

1. This paper consists of sections A, B and C with a total of ten(10) questions
2. Answer ALL questions in the space(s) provided
3. All writings must be in blue or black ink except drawings which must be in pencil
4. All communication devices and calculators are not allowed in the examination room
5. Write your Examination number at the top right corner of every page.
6. Where necessary the following constant may be used

(i) Acceleration due to gravity g=10m/s²

(ii) Density of water = 1g/cm³ or 1000kg/m³

SECTION A (15 MARKS)

Answer ALL questions from this section

1. For each of the items (i)- (xx), choose the correct answer among the given alternatives and write its letter besides the item number in the box provided 

1. What is the name given to the people who study and work professionally in the field which relates matter and energy?

1. Scientists 
2. Gastronomists
3. Physicists 
4. Geophysicists

2. Which of the following experiments is the process of assigning numbers in measurement?

1. Qualitative experiment 
2. Quantitative experiment
3. Scientific experiment 
4. Physics experiment

3.                       Why particles in a solid state are closely packed?

1. Because they have weak force of attraction.
2. Because they have very weak force of attraction.
3. Because they have moderate force of attraction.
4. Because they have very strong force of attraction.

4.                       What differentiates a single moving pulley from a single fixed pulley?

1. In single movable pulley, load is double the effort.
2. In single fixed pulley, load is double the effort. 
3. In single movable pulley, effort is the same as load.
4. In single fixed pulley, effort is double the load.

5. Which class of levers do wheel barrows, nut-crackers and bottle openers belong?

1. Third class 
2. Second class
3. First class 
4. Fourth class

6.                       What does someone pays for if he/she buys sugar from the shop?

1. Mass
2. Density
3. Volume
4. Weight

7.                     Relative density of a substance is 2.5. What is its density?

1. Equal to the density of water.
2. Greater than the density of water.
3. Equal to the volume of water displaced.
4. Less than the density of water.

8.                   Which phenomenon explains the assertion that the narrower the tube the further the water rise?

1. Capillarity
2. Diffusion
3. Osmosis
4. Brownian movement

9.                        Which instrument will you use to measure accurately the inside diameter of a bottle neck?

1.  tape measure.
2.  micrometer screw gauge.
3.  metre rule.
4. Vernier calipers.

10. Which of the following is a safety precaution in the Physics laboratory?

1.  Doing experiment in the laboratory
2.  Handling of apparatus in the laboratory
3.  Use equipment with care in the laboratory
4. Do anything in the laboratory

2. Match the items in List A with a correct response in ListB by writing a letter of a correct response below the corresponding item number in the table provided.

SECTION B (70 Marks)

Answer all questions in this section.

3.(a) List down four uses of hydraulic press.

(b) Why is a hole at the bottom of a ship more dangerous than one that is near the surface?

(c) Calculate the pressure at the bottom of the sea water 52m deep, if the density of water is 1025 Kg/m³. Take the acceleration due to gravity (g) as ION/Kg.

4. (a) Define the following terms as applied in Physics:

(i)Machine

(ii)Load

(b) Why is efficiency of machine less than 100%? Explain briefly.

(c) Simple machine was used to raise a load of weight 4000 N through a height of 0.8 m using an effort of 800 N. If the distance moved by effort was 4.8 m, calculate the: (i) Mechanical advantage. (ii) Velocity ratio.

5.What do you understand by the following terms?

(i) Work 

(ii) Energy 

(iii) Power 

(b) Calculate the power of a pump which can lift 200kg of water through a vertical height of 6m in 10 seconds, given g =10m/s².

(c) Explain the meaning of the following terms:

(i)Kilowatt . 

(ii)Kilojoules . 

6.(a) State Archimedes principle . 

(b)Define relative density of a solid 

(c) The mass of a density bottle is 15g. When it is fully filled with a fluid of density 1.2g/cm³, its mass is 51g. Find the volume of the bottle.

7. (a) A heavy uniform beam AB of weight 500N is supported at its ends. The beam carries a weight of 3000N at a distance of 1.5m from the end A. if the beam is 4m long. Find the thrust at A and B (6 marks)

(b) Machine is a device used to simplify work. With example explain how the following simple machines do they simplify work in their respective stated area. (4 marks)

1. Inclined plane at home
2. Screw jack in garage

8. (a) You are with density bottle, water, oil and beam/ digital balance. Explain briefly the procedures you could use to determine the relative density of oil and deduce its formula. (6 marks) 

(b) A relative density bottle has a mass of 14.6g when dry and empty. Its mass is 58.1g when full of turpentine and 64.6g when full of water. Find the relative density (R.D) of turpentine. (4 marks)

9.(a) What is meant by First Aid?

(b)(i)Draw the symbols or warning signs for each of the following: Irritant

(ii)Danger of an electric shock

(iii)Toxic

(iv)Flammable

SECTION C (15 Marks)

An essay question

10.(a) Explain briefly why:

(i)Water tanks have their outlets fixed at the bottom?

(ii)A tractor with wide tyres cannot easily get stuck in muddy places as compared to vehicles with narrow tyres.

(b)     Calculate the maximum pressure exerted by a block of mass 150kg and surface dimensions of 4m by 6m by 8m resting on the table.

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES

PHYSICS MID TERM EXAMINATIONS AUG/SEPT 

FORM ONE-2021

Time: 2:30Hours

Instructions.

1.              This paper consists of section A, B and C with a total of 10 questions
2.              Answer all questions.
3.              Section A carries 30 marks, section B 50 marks and section C 20  Marks
4.              All answers should be written in the spaces provided.
5.              All communication devices, calculators and any unauthorized material are not allowed in examination room.
6.              Write your number on every page of your answer booklet.
7.              Where necessary, the following constants may be used;

1. Acceleration due to gravity, g=10m/s²
2. Density of water= 1g/cm³ or 1000kg/m³

 SECTION A (30 Marks)

 Answer All questions in this section.

 1.  For each of items (i-xx) choose the correct its letter in the box provided

(i) Relative density of a substance is 2.5. What is its density?

1. Equal to the density of water.
2. Greater than the density of water.
3. Equal to the volume of water displaced.
4. Less than the density of water.

(ii) Why does a body float in a fluid?

1. Because its density is greater than the density of the fluid displaced.
2. Because its density is less than the density of fluid.
3. Because the weight of the fluid displaced is equal to its weight.
4. Because the weight of the fluid displaced is less than its weight.

(iii) Which pair of the following parameters affects pressure at any point in a liquid at rest?

1. Density and volume
2. Depth and area
3. Area and volume
4. Depth and density

(iv) What is the name of the region surrounding a magnet in which the magnetic force is exerted?

1. Magnetic field
2. Magnetic shielding
3. Magnetic pole
4. Magnetic domain

(v)  Which of the following statements is correct about mass?

1.  It is measured by beam balance
2.  It is measured by spring balance 
3.  It varies with place 
4.  It can be zero.

(vi)  Why Physics, Chemistry and Biology are natural science subjects?

1.  They need practical and theory work for learning.
2.  They need only theory for learning.
3.  They need practical work only.
4.  They need only observation.

(vii)  When a body of mass M, is lifted through a height h, it possesses the energy known as

1.  kinetic energy. 
2. chemical energy.
3. light energy.
4. potential energy.

viii) When a body floats on liquid, its:

1.  weight-is greater than the upthrust 
2.  weight is equal to the upthrust
3. weight is less than the upthrust
4. volume is greater than the volume of liquid displaced

(ix) A student gets an electric shock and falls down unconscious in a Physics laboratory. Which of the following would you do first to help the victim: 

1. administer breathing exercise
2. call the physics teacher
3. call other students
4. call a medical doctor

x) A student gets electric shock and falls down unconscious in a Physics laboratory. Which of the following would you do first to help the victim?

1.   Administer breathing exercise
2. Call physics teacher
3. Call other students
4. Call medical doctor

(xi)According to Archimedes’ Principle, upthrust is equal to the:

1. apparent weight
2. volume of fluid displaced
3. weight of fluid displaced
4. weight of the displaced object

(xii)The measurement of mass using a beam balance uses the principle of:

1. conservation of matter
2. conservation of momentum
3. gravitational pull of the Earth
4. moments

(xiii)A physicist is generally interested in studying the relationship between:

1. composition and decomposition of matter
2. matter and energy
3. Physics and Chemistry
4. Physics and energy

(xiv)        The following instruments are used to measure length except:

1. hydrometer
2.   metre rule
3. micrometer screw gauge 
4.  vernier callipers

(xv)Juma wanted to measure the volume of a stone with an irregular shape. Which of the following pairs of instruments would you recommend that he use?

1. Measuring cylinder and metre rule
2. Measuring cylinder and overflow can
3. Metre rule and overflow can
4. Metre rule and beaker

(xvi) A stone is found to have 50 kg by mass at Moshi. When sent to Dar es Salaam its mass will be: 

1. 50kg
2. 60kg
3. 100kg
4. 150kg

(xvii)A victim of electric shock is helped by:

1.  artificial respiration
2. being rushed to the hospital
3. drinking enough water
4. .having bed rest

(xviii)One of the following is not a pair of forces:

1.  attraction and repulsion
2. gravity and diffusion
3. torsion and gravity
4. upthrust and weight

(xix)When buying sugar from a shop you pay for its:

1. density 
2.  mass
3.  volume 
4.  weight

(xx)A clinical thermometer differs from other thermometers because it:

1.  can be used to measure the temperature of ice 
2.  can be used to measure the temperature of melting iron 
3.  .has a constriction
4. .is very small

 (i) The following are fundamental quantities in mechanics except:

1. .length
2. .mass
3. .time
4. .weight 

2. Match the following items.

3. Complete each of the following statements by writing the correct answer in the space provided

1. Pressure in liquids depends on…………………………………
2. Quantity of matter in a substance is called………………….
3.  Basic physical proportions of measurement which cannot be obtained from any other proportions by either multiplication or division are called.
4. The relative density of a liquid can be easily determined by 
5. The quantity of space that an object occupies is known as

SECTION B (50 Marks)
Answer all questions in this section.

4.(a) State two conditions for a body to be in equilibrium.

(b) Distinguish between centre of mass and centre of gravity.

(c) A uniform metre rule AB is balanced horizontally on a knife edge placed 5cm from B with a mass of 60g at B. Find the mass of the ruler.

5.(a) Define the following terms as applied in Physics:

(i)Machine

(ii)Load

(b) Why is efficiency of machine less than 100%? Explain briefly.

(c) Simple machine was used to raise a load of weight 4000 N through a height of 0.8 m using an effort of 800 N. If the distance moved by effort was 4.8 m, calculate the: (i) Mechanical advantage. (ii) Velocity ratio.

6.State Pascals principle of pressure

(b)What are the three factors that affect the liquid pressure?

(c) Calculate the area of a surface of an object which exerts a pressure of

0.2N/m² when a force acting on it is 2N.

7.(a) What are the uses of the following devices?

(i)Manometer

(ii)Heres apparatus (inverted U-tube) 

(iii) U-tube ....

(iv) Barometer 

(b) Explain why a big elephant manages to walk comfortably in maddy soil without sinking while a human being may sink easily.

(c) Draw a well labelled diagram which demonstrates that liquid pressure depends on depth.

8.(a)(i)Define friction.

(ii) Identify three effects of force.

(b) (i) Define density and give its SI unit.

(ii) List three applications of density in real life.

SECTION C (20 Marks)
Answer all questions in this section.

9.  State the following:

(i) Archimedes principle

(ii) Law of flotation

(b) A body has a mass of 120g and a volume of 100cm³. Will the body sink or float in water? Give reason for your answer.

10.a) Mention types of mechanical energy

b)A body of mass 10kg is raised to a height of 4 metres above the ground in 2 seconds.

(i)Find the energy possessed by the body after raising it.

(ii)What type of energy is possessed by the body?

THE PRESIDENTS OFFICE

MINISTRY OF REGIONAL GOVERNMENT AND LOCAL GOVERNMENT

AUGUST-SEPTEMBER EXAMINATION SERIES

PHYSICS FORM-1

2020

TIME: 2:30 HRS

Instructions

1. This paper consists of sections A, B and C with a total of ten (10) questions.

2. Answer all questions.

3. All answers must be written in the spaces provided

4. All writing must be in blue or black ink except drawings which must be in pencil.

5. All communication devices, calculators and any unauthorized materials are not allowed in the examination room.

6. Write your Examination Number at the top right hand corner of every page.

7. Where necessary the following constants may be used:

(i) Acceleration due to gravity, ³g = 10m / s². 3 (ii) Density of water = 1g / cm or 1000kg / m .

SECTION A (30 MARKS)

(i) Which of the following is a safety precaution in the Physics laboratory?

1. Doing experiment in the laboratory
2. Handling of apparatus in the laboratory
3. Use equipment with care in the laboratory
4. Do anything in the laboratory

(ii) Which instrument will you use to measure accurately the inside diameter of a bottle neck?

1. tape measure.
2. micrometer screw gauge.
3. metre rule.
4. Vernier calipers.

(iii) When a body of mass M, is lifted through a height h, it possesses the energy known as

1. kinetic energy.
2. chemical energy.
3. light energy.
4. potential energy.

(iv) Which of the following is an example of a third class lever?

1. Scissors
2. Fishing pole
3. Pliers
4. Nut cracker

(v) Which of these resources of energy is non-renewable?

1. Wave energy
2. Biofuels
3. Radiant energy
4. Fossil fuel

(vi) A set of techniques used by scientists to investigate a problem refers to:

1. data interpretation.
2. scientific method.
3. performing an experiment
4. data presentation.

(vii)One of the following is the condition for a body to float in water:

1. The mass of a floating body is greater than displaced water.
2. The density of the body must be less than the density of the fluid.
3. The upthrust due to the liquid must be smaller than the weight of the body.
4. The displaced water is less than the floating body.

(viii)A force which prevents a body to slide is called:

1. stretching force.
2. restoring force.
3. frictional force.
4. compressional force.

(ix)The phenomenon observed when maize flour is poured on top of water is called:

1. diffusion.
2. capillarity.
3. surface tension.
4. osmosis.

(x)When a body is performing a work, it is said to have:

1. moment.
2. energy.
3. momentum
4. work.

(xi)Materials that allow only part of light to pass through them are called:

1. transparent.
2. translucent.
3. opaque.
4. Newton.

(xii)Why is the mechanical advantage less than three in a single rope three pulleys system?

1. Because the effort may vary.
2. Because the load rises.
3. Because the upper pulley does not move
4. Due to friction on pulleys. 

(xiii)A form of energy that can be persistently used without running out is

1. Efficient
2. renewable
3. non-renewable
4. effective

(xiv)Figure 1 shows a ruler balanced by placing the loads at its ends. What is the weight X?

Figure 1

1. 5N
2. 0.5N
3. IOON
4. 200N

SECTIONA

(xv)Results obtained from Physics experiment can form:

1. Scientific laws
2. Scientific Principles
3. Scientific Theories
4. Scientific Procedures

(xvi)If a micrometer screw gauge reads 5.0mm and 0.95mm for sleeve and thimble respectively, the length of object will be:

1. 5.95mm
2. 59.5mm
3. 0.595mm
4. 0.0595mm

(xvii)The force which exists between two close bar magnets with like poles is known as:

1. attractive
2. repulsive
3. friction
4. compressional

(xviii)A physical phenomenon observed when a tea bag is dropped into a cup of hot water is called:

1. diffusion
2. capillarity
3. osmosis
4. solution

(xix)The walls of a dam are made thicker at the bottom than at the top because the:

1. pressure of water at the bottom is greater
2. pressure of water at the bottom is less 
3. weight of water at the bottom is greater
4. weight of water at the bottom is less.

(xx)The term displacement means:

1. a distance covered in a given direction
2. a distance covered without direction
3. a rate of distance
4. a rate of velocity 

2.Match the items in List A with responses in List B by writing the letter of the correct response beside the item number.

3.Complete each of the following statements by writing the correct answer in the space provided.

(i)The relative density of a liquid can be easily determined by

(ii)The lever, pulley, inclined plane, bottle opener and see saw are examples of

(iii)A loaded car of mass 25,000kg is moving at 20m/s, its linear momentum is

(iv)Laterally inverted is one of the properties of the image formed by

(v)Materials which return to their original shape and size after removing the stretching force are called

SECTION B (50 MARKS)

4.The mass of an empty density bottle was 50g. When filled with a certain liquid of volume 20cm³ its mass became 75g. Find the:

a)Density of the liquid

b)Relative density of the liquid

5. (a) What do you understand by the following terms?

(i) Work

(ii) Energy

(iii) Power

(b) Calculate the power of a pump which can lift 200 kg of water through a vertical height of 6 m in 10 seconds.

6.(a) List down four uses of hydraulic press.

(b)Why is a hole at the bottom of a ship more dangerous than one that is near the surface?

(c) Calculate the pressure at the bottom of the sea water 52m deep, if the density of water is 1025 Kg/m³. Take the acceleration due to gravity (g) as ION/Kg.

7.State Pascals principle of pressure

(b)What are the three factors that affect the liquid pressure?

(c) Calculate the area of a surface of an object which exerts a pressure of  0.2N/m² when a force acting on it is 2N.

8.(a) What are the uses of the following devices?

(i)Manometer

(ii)Heres apparatus (inverted U-tube)

(iii) U-tube ....

(iv) Barometer

(b)Explain why a big elephant manages to walk comfortably in maddy soil without sinking while a human being may sink easily.

(c) Draw a well labelled diagram which demonstrates that liquid pressure depends on depth.

SECTION C

9.(a)(i)Define friction.

(ii) Identify three effects of force.

(b) (i) Define density and give its SI unit.

(ii) List three applications of density in real life.

10.(a)State the following:

(i) Archimedes principle

(ii) Law of flotation

(b) A body has a mass of 120g and a volume of 100cm³. Will the body sink or float in water? Give reason for your answer.