Question 1
(a) Define physics
(b) Give three examples of natural phenomena in which physics can be used to explain their occurrence
(c) State any three activities one is engaged in when conducting an experiment in physics
Answer
(a) Physics is the study of matter and its relation to energy.
(b) - Rainbow,
- Eclipse,
- Lightning
(c) - Measurement of various quantities
- Collection of data for analysis
- Observation
(b) - Rainbow,
- Eclipse,
- Lightning
(c) - Measurement of various quantities
- Collection of data for analysis
- Observation
Question 2
(a) Name five (5) major branches of physics
(b) Explain how physics is related to the following subjects
i. History
ii. Mathematics
iii. Home science
Answer
(a) - Mechanics
- Electricity and magnetism
- Thermodynamics
- Geometrical options
- Waves and atomic physics
(b) i. History - Carbon dating an application of radioactivity serves as a crucial tool to historians in establishing fossils ages and hence past patterns of life.
ii. Mathematics - Many concepts in physics are expressed mathematically
iii. Home science - Physics knowledge is applied in the design and manufacture of kitchen equipment.
- Electricity and magnetism
- Thermodynamics
- Geometrical options
- Waves and atomic physics
(b) i. History - Carbon dating an application of radioactivity serves as a crucial tool to historians in establishing fossils ages and hence past patterns of life.
ii. Mathematics - Many concepts in physics are expressed mathematically
iii. Home science - Physics knowledge is applied in the design and manufacture of kitchen equipment.
Question 3
(a) Define Laboratory
(b) List down any three basic requirements for a working school laboratory
(c) Explain the first aid measures to be undertaken if the following calamities / accidents befall a student.
a. Cuts
b. Eye damage
c. Electric shock
Answer
(a) A laboratory is a room. designed and equipped for the conducting of experiments and practical work,In the course of the studying science subjects
(b) - Gas piping
- Electrical energy supply network
- Water piping system
(c.) Explain the first aid measures to be undertaken if the following calamities / accidents befall a student.
a. Cuts - Assistance should be sought to stop bleeding and for immediate dressing up of the wound.
b. Eye damage - It should be washed off immediately with a lot of cold water.
c. Electric shock - First put off the main switch and then treat for the shock.
(b) - Gas piping
- Electrical energy supply network
- Water piping system
(c.) Explain the first aid measures to be undertaken if the following calamities / accidents befall a student.
a. Cuts - Assistance should be sought to stop bleeding and for immediate dressing up of the wound.
b. Eye damage - It should be washed off immediately with a lot of cold water.
c. Electric shock - First put off the main switch and then treat for the shock.
Question 4
(a) The following table shows some basic physical quantities in PHYSICS. Fill in the blank spaces
(b) Show how the named derived quantities are derived from the basic physical quantities.
a. AREA
b. VOLUME
c. DENSITY
(c) A form one student used a metre rule to measure the width of a textbook as Shown below. Point x is the end point of the text book from where the student read the width.
i. From which position did he read the correct width of the text book?
ii. State the correct width he read
iii. Which is the name of the error he would engage in if he used any of the other two positions
(d) A form one student was asked to estimate the circumference of a cylinder using, a thin thread and a meter rule. Describe using a diagram how he measured and estimated the circumference
Answer
(a)
(b)
a. Area = length x length
b. Volume= length x length x length
c. Density = mass รท (length x length x length)
(c)
i. Point E2
ii. 12.6cm
iii.Parallel error
(d) (i). Closely wrap the thin thread 8 to 10 times around the cylinder as shown below
(ii) Mark with ink the beginning and end of the turns
(iii) Remove the thread and measure the length between the ink marks and call it l1
(iv) Repeat the procedure 2 more times to obtain L2 and L3.
(v) Find The Average Of L1, L2, And L3
(vi) Determine the circumference (length of one turn by dividing the average length La by total no of turns. Say 8. I.e. circumference = la ⁄ 8
(b)
a. Area = length x length
b. Volume= length x length x length
c. Density = mass รท (length x length x length)
(c)
i. Point E2
ii. 12.6cm
iii.Parallel error
(d) (i). Closely wrap the thin thread 8 to 10 times around the cylinder as shown below
(ii) Mark with ink the beginning and end of the turns
(iii) Remove the thread and measure the length between the ink marks and call it l1
(iv) Repeat the procedure 2 more times to obtain L2 and L3.
(v) Find The Average Of L1, L2, And L3
(vi) Determine the circumference (length of one turn by dividing the average length La by total no of turns. Say 8. I.e. circumference = la ⁄ 8
Question 5
(a) Define density and state it's SI units
(b) A block of glass of mass 240g is 5cm long, 2 cm thick and 8 cm high. Determine:
a. The volume of the block
b. The density of the glass block in kg/m3
Answer
(a) Density is mass per unit volume, expressed in kilogram per cubic metre
(b)
a. Volume = l x b x h
= 5 x 2 x 8
= 80 cm3
b.
(b)
a. Volume = l x b x h
= 5 x 2 x 8
= 80 cm3
b.