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WorksheetsForce Fields
Total questions: 36
Worksheet time: 18mins
Name
Class
Date
1.
A positive electric charge is formed at the rod that made of ……………… when we rub it with a piece of silk
a)
Glass
b)
Ebonite
c)
Copper
d)
Wood
2.
A rod made of iron is charged with a static charge when rubbed and provided with hand made of …………
a)
aluminum
b)
copper
c)
silver
d)
Plastic
3.
When we rub a rod of ebonite with silk ………………… transferred from silk to ebonite
a)
Protons
b)
Electrons
c)
Neutrons
d)
Atoms
4.
To protect constructions and buildings from lightning strikes
a)
Coulomb meter
b)
Electroscope
c)
Lightning rod
d)
Volta meter
5.
The electrostatic series is the arrangement of some materials according to the ease of losing ………………… from them.
a)
Protons
b)
Electrons
c)
Neutrons
d)
Molecules
6.
The weak electric charge is measured by………………… device
a)
a) Coulomb meter
b)
b) Lightning rod
c)
c) Electroscope
d)
d) Voltmeter
7.
The ………………… device is used to indicate the electrical state of the body
a)
Hoffman voltameter
b)
Electroscope
c)
Lightning rod
d)
Voltameter
8.
to paint metals using electrostatic painting the paint spray is charged with ……
a)
positive charge
b)
negative charge
c)
neutral charge
d)
natural charge
9.
Metal chains are hanged from fuel transport vehicles and touches the ground to discharge static elecricity formed due to …..
a)
friction between vehicles tires and road
b)
friction between fuel and tank
c)
friction between vehicles and air
d)
friction between vehicles and driver
10.
Electric power lines start from the………………… charge and end at the ……………… charge
a)
positive / negative
b)
negative / positive
c)
negative /neutral
d)
negative /negative
11.
Objects that can be charged with a static electric charge can be made of non-conductive materials such as
a)
iron
b)
nickel
c)
copper
d)
plastic
12.
The electroscope device is known as…….
a)
electric manager
b)
electric detector
c)
telescope
d)
chargescope
13.
The electric force lines end …………… of charged metal objects
a)
at the surface
b)
at the middle
c)
at the center
d)
behind
14.
Small paper scraps are ……….. ….. when rubbed with wool
a)
not attractedto the copper rod
b)
attracted to the copper rod
c)
repulled frob the copper rod
d)
attracted to each other
15.
The electroscope is used to………
a)
interfere the presence of charge
b)
detect the geographical directions
c)
monitor the celestial bodies
d)
magnifying the small obgects
16.
All of the following are forms of artificial magnets except
a)
Magnetic needle
b)
horse shoe
c)
bar magnet
d)
aluminum piece
17.
………is from non- magnetic material
a)
Iron
b)
Nickle
c)
Aluminum
d)
cobalt
18.
………is from magnetic material
a)
Gold
b)
Silver
c)
Copper
d)
Cobalt
19.
The strength of magnet increases in the ………. Of the magnet
a)
middle
b)
edge
c)
side
d)
surface
20.
……….is an ancient tool used to determine directions
a)
Compass
b)
Hour glass
c)
Sundials
d)
Balance
21.
The magnetic field lines are directed from ………..to ………..outside the magnet
a)
north pole / south pole
b)
south pole/ north pole
c)
the middle / its edge
d)
edge / middle
22.
The magnetic field lines croud together at ……..
a)
North pole only
b)
South pole and North pole
c)
Magnet tip
d)
South pole only
23.
…………… forces affecting certain dimension such as gravitational forces and electromagnetic forces
a)
Flexibility
b)
Collision
c)
Friction
d)
Field
24.
……………… is an example of contact forces
a)
Gravity
b)
Electromagnetic
c)
Friction
d)
Electrostatic
25.
The scientist …………… discovered that all material objects attract each other
a)
Rutherford
b)
Newton
c)
Coulomb
d)
Moseley
26.
Earth's lines of gravitational forces are represented by……………… lines
a)
Magnetic field
b)
Electric field
c)
Gravitational field
d)
The length
27.
……………… is an example of field forces
a)
Gravity
b)
Contact
c)
Friction
d)
Flexibility
28.
The phenomenon tides occurs ……………… daily
a)
Once
b)
Twice
c)
Three times
d)
Four times
29.
From the factors affecting the gravitational force between two objects is …
a)
The mass of two objects
b)
Type of material of the two objects
c)
The volume of the two objects
d)
The density of the two objects
30.
An object of mass 5 kg, so its weight on Earth’s surface equals ………
a)
5N
b)
50N
c)
50Kg
d)
40N
31.
Tides are most active when the moon is shaped like…………
a)
Full moon
b)
crescent
c)
First quarter
d)
Last quarter
32.
The intensity of the gravitational field on the moon is equal to …………The intensity of the gravitational field on the earth
a)
½
b)
¼
c)
1/6
d)
1/8
33.
An object its weight on the Earth’s surface equals 60 newton, so its mass equals ……… kg
a)
60 kg
b)
6 kg
c)
6 N
d)
40 kg
34.
The force affecting falling of an apple to the ground is the……………………force
a)
Gravitational
b)
Electromagnetic
c)
Friction
d)
Electrostatic
35.
The ratio between the weight of an object at the base of a mountain to its weight at its top is ……………
a)
Greater than one
b)
Less than one
c)
Equal one
d)
Less than its mass
36.
The gravitational field strength on the Earth’s surface ……………… as we move farther from its center
a)
incrases
b)
decreases
c)
remains constant
d)
disappear
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