1. Define physics ( 2 mks )
2. The following are branches of physics.
Explain what each one of the deals with.
a) Mechanics ( 2mks )
b) Atomic physics ( 2mks )
c) Geometrical optics (2 mks )
d) Waves ( 2mks )
3. Explain how physcics is applied in
a) Geography ( 2 mks )
b) Home science ( 2 mks )
4. State 5 laboratory rules a student should follow to avoid electrical shocks. ( 5 mks )
5. State the first aid measure for each of the cases.
a) A cut from glass apparatus. ( 2mks )
b) When a chemical lands in the eye ( 2 mks )
c) When an acid burns a hand ( 2mks )
d) An electric shock ( 1 mk )
6. Differentiate between basic physical quantities and derived quantities. (2 mks )
c) Give three examples of derived quantities . ( 3mks )
d) Fill in the table below. ( 10 mks )
Basic physical quantity
S.I. Unit Symbol of unit
Amount of substance
7. Determine the density in kg/m3 of a solid whose mass is 1080g and whose dimensions in cm are length=3,width= 4 and height= 3 . ( 3 mks )
8. The mass of a density bottle is 20.g when empty, 70g when full of water and 55g when full of second liquid
a) Mass of water ( 1 mk )
b) Mass of liquid ( 1 mk )
c) Volume of water ( g w = 1 g/cm3 ( 1 mk )
c) Density of liquid in g/cm3. ( 3 mks )
9. State any five career opportunitities in physics (5mks)
10. Name any 4 items contained in the first Aid kit found in the laboratory (4mks)
11.Describe the method you would use to measure the circumference of a cylinder using a thread and a meter rule (4mks)
12. 300 cm3 of fresh water of density 1000kg/m3 is mixed with 100cm3 of sea water density 1030kg/m3.calculate the density of mixture (4mks)
13. a) Define force and state its SI Units ( 2 mks )
b) State 3 effects of force on a body.
( 3 mks )
14. The figure below shows water drops on two surfaces.
a) glass surface smeared b) clean glass surface
Explain the difference in the shapes of the two drops of water ( 2 mks )
15. State 2 ways of reducing surface tension in liquid. ( 2 mks )
16. A body weighs 120N in air and 70N when submerged in water. Calculate the upthrust acting on the body. ( 3 mks )
17. Give a reason why weight of a body varies from one place to another. ( 1 mk )
18. a) Define pressure and state its SI unit. ( 2 mks )
b) State 2 factors that determine the pressure at a point in a liquid. ( 2 mks )
- State pascal’s principle of transmission of pressure in fluids. ( 2 mk )
d) A brick of weight 80 N stands upright on the ground as shown.
What is the pressure it exerts on the ground? 5mks
(e) The density of mercury is 13 600 kg / m3 and the gravitational field strength g is 10 N / kg. Calculate the pressure due to the column of mercury of length 0.76 m. (4marks)