WorksheetsPTG Magnetic
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
The unit of magnetic field is
a)
N
b)
Nm^2
c)
Km
d)
N/m
e)
Wb/m^2
2.
Magnetic method cannot be applied to searching for
a)
Fossil
b)
Water
c)
Building construction
d)
Arc
e)
Metal mineral
3.
Magnetic survei are uses principle
a)
Density
b)
Conductivity
c)
Inductance
d)
Magnetic
e)
Dielecrric
4.
Object that have strong magnetism are called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
5.
Object that have weak magnetism are called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
6.
Based of the following which has the highest magnetism is
a)
Steel
b)
Iron
c)
Allumunium
d)
Rubber
e)
Plastic
7.
What tools are used to measure magnetism
a)
Magnet
b)
Magnetometer
c)
Magnetmeter
d)
Magneticmeter
e)
Speedometer
8.
The value of the magnetic intensity of rocks on the influence of magnets is called
a)
Density
b)
Magnetic
c)
Suscepbility
d)
Conductivity
e)
Polarity
9.
Magnetism of rocks can be affected by
a)
Forming mineral
b)
Form of rock
c)
Depth of rock
d)
Rock colour
e)
Place found
10.
Geophysical methods that rely on the magnetic properties of rocks is
a)
Seismic
b)
Elektromagnetic
c)
Gravity
d)
IP
e)
Magnetic
11.
The outer magnetic fields are called
a)
Outer field
b)
Anomaly field
c)
Internal field
d)
External field
e)
Flux field
12.
Anomaly of magnetic field called as
a)
Outer magnetic field
b)
Intern magnetic field
c)
Surface magnetic field
d)
Local magnetic field
e)
One direction magnetic field
13.
One of the rocks containing magnetic minerals is
a)
Igneous
b)
Titanomagnetite
c)
Sediment
d)
Metamorf
e)
Volcanic
14.
The effect of curie temperature on magnetic strength is
a)
Fixed strong magnetic
b)
Decrease magnetic strength
c)
Increase magnetic strength
d)
The direction of the magnetic field is fixed
e)
No magnetic
15.
Magnetic method can be applied to searching for
a)
Water
b)
Plastic
c)
Metal mineral
d)
Sand
e)
Ore
16.
The material in which all electrons are paired is called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
17.
The unit of magnetic moment is
a)
Am^2
b)
Am
c)
Wb/m^2
d)
N/m
e)
N/m^2
18.
How was susceptibility of dimagnetic substances
a)
Strong
b)
Positive
c)
Negative
d)
Weak
e)
Contaminated
19.
Which of this common rock types has a highest susceptibility number
a)
Acid igneous
b)
Basic igneous
c)
Sands stone
d)
Metamorphic stone
e)
Sedimantary rocks
20.
The magnitude of H is proportional to the
a)
Number of turns in the coil
b)
Length of the wire
c)
Height of the wire
d)
Strength of the current
e)
Mass of the wire
21.
The intensity of induced magnetization (Ji) of a material is defined as
a)
Crosssectional area (A)
b)
Magnetizing force
c)
Dipole moment (M)
d)
Magnetic field
e)
Sample of Length (L)
22.
The unit of "the induced intensity of magnetization" is
a)
A
b)
Am^-1
c)
Km
d)
N/m
e)
m^2
23.
µ0 and µR are constants corresponding to the
a)
Magnetic permeability of vacuum
b)
Relative magnetic permeability of medium
c)
Magnetic fields
d)
Magnetic poles
e)
Induced magnetization
24.
In the SI system of units, magnetic parameters are defined in terms of
a)
Magnetic current
b)
Magnetizing force
c)
Self potential
d)
Induced potential
e)
Electrical current
25.
Magnetic method are included in the Geophsical survey method
a)
Passive
b)
Active
c)
Proportional
d)
Active and Passive
e)
Not all
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