DAILY TEST
SCIENCE
CLASS IX
Fill in the blank
1.
Pressure is……..
2.
Write down the formulation of pressure
3.
The unit of pressure is…………….
4.
The unit of force is………….
5.
The pressure exerted on the ground by a cube
which has a weight of 100 N and a side area of 2 m2 is………….
6.
Density is……….
7.
The unit of density is….
8.
1 kg/m3
= …………………….g/cm3
9.
The desity of a liquid can be measured using an
instrument called…..
10.
The
pressure exerted by a 100 N force acting on an area of 0.2 m2 is……..
11.
The
moment of force is……….
12.
The unit of moment of force is……
13.
An atom has three particles, they are…….
14.
An atom has a central nucleus surrounded
by………………..
15.
A material through which electrons can
flows is called……..
16.
A material that can become charged with static
electricity is called…………
17.
When is an atom described as being neutral?
18.
When a piece of ruler is rubbed with a dry
woollen cloth, electrons move from the
cloth to the ruler. Which material
becomes a. positively charged?
b. negatively charged?
19.
Write down three parts of a simple crowbar
20.
When you lift an object by your arm. Draw the
class of lever you apply
When you shift an objecy by a shove. Draw the class of lever you apply
Essay
1.
What is the pressure exerted on the ground by a
cube which has a weight of 200 N and a side area of 10 m2
2.
What is the pressure exerted on the ground by a
cube which has a weight of 80 N and a side area of 100 cm2
3.
What pressure does a block of weight 600 N and
dimensions 2 m x 2 m x 2 m ?
4.
A block of material is 8 cm long 2 cm wide, and 3 cm high, and has a mass of 46 g. what
is its density.?
5.
The mass of a pebble was 44,2 g. the original
volume of water in the measuring
cylinder was 50 cm3 and the combined volume of water and pebble was
52 cm3. What is the density
of the rock in the pebble?
6.
Calculate the increase in pressure as you dive
from the surface of a lake to a depth of 10 m. ( density of water = 1000 kg/m3
and g = 10 N/kg )
7.
Draw the
three classes of lever.
8.
What is moment of a 200 N force acting on a
crowbar :
a.
4 m from the fulcrum
b.
6 m from the fulcrum
c.
1.5 m from the fulcrum
9.
Explain, when does a matter called positively
charged and negatively charged?
10.
Explain the defeniton of insulator and conductor
and example for each that you find in your daily life. ( at least 2)
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