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WorksheetsGCSE physics revision
Total questions: 50
Worksheet time: 31mins
An electric motor transfers 24 J of energy usefully, but wastes 16 J of energy in doing so. What is the efficiency of the motor?
16 J ÷ 24 J = 0.67
24 J ÷ 16 J = 1.5
16 J ÷ 40 J = 0.4
24 J ÷ 40 J = 0.6
If the speed of an object is increasing, its (a) energy store is increasing.
As an object falls it gains kinetic energy as its _______________ ___________ energy store decreases.
(a)
Which of the following is not a use of ultrasound?
Cleaning machinery
Sterilising medical apparatus
Scanning in hospitals
Range-finding
The three types of fossil fuel are natural gas, coal and ...
methane
oil
uranium
wood
Nuclear power is...
renewable
non-renewable
One disadvantage of geothermal energy is that ________________________________.
a plant cannot be built ANYWHERE
it doesn't cost a lot of money to build
it can provide power 24 hours a day
it doesn't harm ecosystems where it's built
What is the half life of this radioactive element
100s
40s
50s
10s
The correct notation to complete this nuclear equation for beta decay is
I am a fast moving electron stopped by aluminium - what am I?
alpha
beta
gamma
I am a high frequency electromagnetic wave stopped by thick lead - what am I?
alpha
beta
gamma
I am two neutrons and two protons, and stopped by paper - what am I?
alpha
beta
gamma
What is this symbol?
Thermistor
Resistor
LED
Diode
The law of conservation of energy states that …
energy is always constant
energy cannot be transferred or created, only destroyed
energy cannot be created or destroyed, only transferred
energy cannot be transferred, only created and destroyed
Select the non-magnetic element
Iron
Cobalt
Nickel
Copper
Which rule applies the direction of a magnetic field created from an electrical current flowing through a wire?
Right hand rule
Left hand rule
Neither
Which of these factors can increase the strength of an electromagnet?
Number of coils of wire
Strength of electrical current flowing through wire
Having an iron core
Potential difference
All of the above
What is magnetic flux density measured in?
Teslas
Amps
Musks
Pascals
What are the units of power?
Joules
Newtons
Amps
Watts
Kilowatt-hours
Which of these is not a force?
Kinetic
Thrust
Tension
Drag
Friction
Which of these are measured in Joules? Tick all that apply (two answers).
Kinetic energy
Weight
Thrust
Power
Work done
Describe the motion in the graph:
Constant Speed (positive slope)
Stopped (at rest)
Acceleration (increasing speed)
Return Home (negative slope)
Describe the motion in the graph:
Constant Speed (positive slope)
Stopped (at rest)
Acceleration (increasing speed)
Return Home (negative slope)
Select the description of motion from A - B.
Slowing down away from the origin
Speeding up away from the origin
Constant velocity away from the origin
Constant velocity towards the origin
Use the picture above to choose the most accurate description of the object's motion
object is at rest
object is slowing down
object is moving at a constant speed
object is speeding up
At what time does the object switch directions?
15 minutes
40 minutes
10 minutes
30 minutes
What happens when the ball goes from the highest position to the lowest position
PE and KE increases and decreases together
Impossible to know without knowing the mass of the object
the PE decreases while KE increases
The thermal energy of a substance is called the........
Maternal energy
External energy
Paternal energy
Internal energy
What is the melting point of iron?
0 oC
1500 oC
2800 oC
3300 oC
At what point do the particles have the most kinetic energy?
A
C
D
F
What state is iron in between C and D?
solid
liquid
gas
plasma
During which two sections of the graph does the temperature stay constant? (You must choose two answers)
A to B
B to C
C to D
D to E
E to F
Between which two points is iron a solid?
A to B
B to C
C to D
D to E
E to F
Example of a transverse wave?
Electromagnetic wave
Sound
P-Waves
Example of a longitudinal wave?
P-waves
S-waves
Radio waves
Ultraviolet light
In a transverse wave, oscillations are ____ to direction of energy transfer
Parallel
Perpendicular
What device would you use for viewing oscillations in waves?
Oscilloscope
Stroboscope
Frequency generator
Wave detector
Which type of electromagnetic wave has the second highest frequency?
X-Ray
Gamma Rays
Ultra Violet
Micro waves
Look at the following equation E = m c Δθ What does the c stand for?
Mass
change in temperature
Latent heat
specific heat capacity
Look at the equation: E=mL What does the L stand for?
Latent Heat
Mass
Energy
Specific Heat Capacity
A gas is kept at a constant volume, but it is heated up. What happens to the pressure of the gas?
Pressure increases because particles hit the sides of the container more frequently (they have more KE)
Pressure increases because particles hit the sides each other more frequently (they have more KE)
Pressure decreases because particles have more room to move so don't hit the sides of the containers as often.
Pressure decreases because particles have more room to move so don't hit each other as often.
What is the unit for pressure?
Pa
J
kg/m3
N
Which letter(s) represents the wavelength of the wave?
a
b
c
d
e
What is the amplitude of this wave?
0.20 m
0.40 m
2.0 s
4.0 s
What is the time period of this wave?
0.20 m
0.40 m
2.0 s
4.0 s
Which of the following do all regions of the electromagnetic spectrum have in common?
Travel at the speed of light (3.0 x 10 8 m/s)
Cannot travel in a vacuum
Can be reflected, refracted and polarised
Need a medium to travel in
