# Form 1 Physics Exam Papers and Marking Scheme End Term 1

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

Electric current

luminous intensity

Time

Amount of substance

Mass

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

Calculate;

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

with wax

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)

## Physics Form One Questions and Answers

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