WorksheetsFriction, Induction, Conduction
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
Without friction, an object in motion would never stop.
a)
true
b)
false
2.
What type of energy transfer occurs when a student warms her hands by putting them around a hot mug of tea?
a)
Conduction because energy is transferred by direct contact
b)
Convection because energy is transferred by direct contact
3.
The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of ________.
a)
Convection
b)
Conduction
c)
Induction
d)
Radiation
4.
In an electrically neutral object, what must be true about the numbers of protons and electrons?
a)
There are more protons than electrons
b)
There are more electrons than protons
c)
They are equal
5.
Electromagnetic induction occurs in a wire when a change occurs in (a) in wire.
6.
Friction produces (a) .
7.
(a) are good conductors
8.
Conduction is the transfer of thermal energy ___________.
a)
in the form of electromagnetic waves such as infrared radiation without the aid of a medium
b)
through a medium without any flow of the medium
c)
by means of convection currents in a fluid (liquid or gas), due to a difference in density
d)
None of the above
9.
A generator is used to light a bulb. Energy for lighting the bulb actually comes from a
a)
coil or wire
b)
mechanical intput to the generator
c)
magnet in the generator
d)
plug where the generator is connected to the wall
10.
When there is a change in the magnetic field in a closed loop of wire
a)
(a) a voltage is induced in the wire
b)
(b) current is made to flow in the loop of wire
c)
(c) electromagnetic induction occurs
d)
(d) all of these
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