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Paper 2 - AQA Physics GCSE
Mechanically, electrically, by heating, by radiation
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Harish Yasaskaran
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Cards (71)
What is energy transfer?
How energy moves or changes
form
If the object is released from the right side, which direction will it move?
The object will move from
right to left
How are the three electrical quantities related to each other?
The relationship between voltage,
current
, and
resistance
is described by
Ohm's law
:
V
=
I
*
R
where V is voltage, I is current, and R is resistance.
What is the relationship between potential energy and kinetic energy shown in the image?
As potential energy
decreases
, kinetic energy
increases
How does the speed of the object change as it moves from left to right?
The speed of the object increases from
slow to fast to fastest
What occurs to kinetic energy as an object gains height?
It converts to
potential energy
What is the state of energy at rest positions?
All energy is
potential
What does it mean that energy is always conserved?
Energy is never
created
or
destroyed
What is the unit of voltage?
Volt
What are the two types of energy that transform into each other during movement?
Potential energy
and
kinetic energy
How does the kinetic energy change as the object moves from left to right?
The
kinetic
energy
increases
as the object moves from
left
to
right.
What does voltage do in a circuit?
It pushes
current
through the circuit
What is the name of the electromagnetic spectrum shown in the image?
Electromagnetic
spectrum
What is current defined as?
Flow of
charge
When does energy transfer occur during motion?
As motion slows at maximum
height
What is the formula that relates voltage, current, and resistance?
V
=
V =
V
=
I
R
IR
I
R
How can the relationship between voltage, current, and resistance be visualized?
Voltage is like a pulling
force
(Volt)
Current is the
flow
(
Amp
)
Resistance
controls
the flow (
Ohm
)
How do higher frequency waves compare to lower frequency waves?
Higher frequency waves have shorter
wavelengths
How does resistance affect the flow of current in a circuit?
It controls how tightly the rope is held
What are the two main types of energy shown in the image?
Potential energy
Kinetic energy
If the object is released from the left side, which direction will it move?
The object will move from left to
right
.
What creates a convection current in water?
Warmer
water
rising
and
cooler
water
sinking
If the heat source was turned off, how would the circulation or movement of the contents in the pot be affected?
The
circulation
would
slow down
or
stop
How does the potential energy change as the object moves from left to right?
The potential energy
decreases
as the object moves from left to right.
What are the key points regarding energy during a swing?
At rest positions: All energy is
potential
(height maximized)
Bottom position: All energy is
kinetic
(speed maximized)
Energy continuously transfers between forms during swing
What is the state of energy at the bottom position of a swing?
All energy is
kinetic
How does the function of the different regions of the electromagnetic spectrum vary?
Gamma-rays
and
X-rays
have high energy and can penetrate matter
Ultraviolet,
visible
, and
infrared
are used for imaging and lighting
Microwaves
are used for heating and communication
Radio waves
are used for broadcasting and communication
If you wanted to observe the internal structure of a material, which region of the electromagnetic spectrum would you use?
X-rays
What are the steps in the convection process when heating water?
Heat source
warms bottom layer
Water becomes less dense and rises
Cooler water sinks to replace it
Cycle repeats, distributing heat
What is the frequency range of the visible spectrum shown in the image?
FREQUENCY
What are the three electrical quantities represented in the image?
Volt
Amp
Ohm
What do electromagnetic waves carry through space?
Radiant energy
What is the wavelength range of the visible spectrum shown in the image?
380-780
nm
What are the components of the electromagnetic spectrum?
Gamma rays
X-rays
Ultraviolet
Visible light
Infrared
Microwaves
Radio waves
How does convection transfer heat?
Heat is transferred by the movement of a
fluid
(liquid or gas).
What are the descriptions of the methods of energy transfer?
Mechanically
: Transfer through forces acting on objects
Electrically: Flow through
electrical circuits
By Heating: Thermal energy transfer methods
By Radiation: Transfer through electromagnetic waves
How can you use Ohm's law to solve for an unknown electrical quantity?
If you know any two of the
three
quantities (V, I, R), you can use Ohm's law to solve for the third.
For example, if you know the voltage (V) and resistance (R), you can solve for the
current
(I) using the formula I = V/R.
What type of cooking process is being depicted in the image?
The image depicts the process of
boiling
, where the contents of the pot are
heated
to the boiling point
What are the three modes of heat transfer shown in the image?
Conduction
Convection
Radiation
What is the name of the process shown in the image where heat is transferred through electromagnetic waves without the need for a medium?
Radiation
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