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WorksheetsIGCSE U4 forces and energy
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
A closed system is one in which:
a)
a) Energy and matter can enter and leave freely
b)
b) Energy can enter and leave freely, but matter cannot
c)
c) Neither energy nor matter can enter or leave
d)
d) Matter can enter and leave freely, but energy cannot
2.
Conservation of energy states that:
a)
a) Energy can be created or destroyed in any process
b)
b) Energy is always conserved in a closed system
c)
c) Energy decreases over time
d)
d) Energy can only be transformed into matter
3.
Efficiency is a measure of:
a)
a) The total energy of a system
b)
b) The ability of a system to do work
c)
c) The ratio of useful energy output to total energy input
d)
d) The amount of energy lost as heat
4.
Elastic potential energy is energy stored in:
a)
a) Moving objects
b)
b) Chemical bonds
c)
c) Stretched or compressed objects
d)
d) Objects at rest
5.
Energy resources are:
a)
a) Renewable sources of energy
b)
b) Natural resources used to generate electricity
c)
c) Sources of energy used in industry
d)
d) Sources of energy used to power machines and devices
6.
Fossil fuels are:
a)
a) Renewable energy sources
b)
b) Clean sources of energy
c)
c) Non-renewable energy sources formed from decayed plants and animals
d)
d) Sources of energy derived from wind and sunlight
7.
Gravitational potential energy is energy due to:
a)
a) Motion
b)
b) Position relative to the Earth's surface
c)
c) Chemical reactions
d)
d) Nuclear reactions
8.
The joule is the unit of measurement for:
a)
a) Power
b)
b) Energy
c)
c) Force
d)
d) Velocity
9.
Kinetic energy is the energy associated with:
a)
a) Motion
b)
b) Position
c)
c) Height
d)
d) Temperature
10.
Power is the rate at which:
a)
a) Energy is transferred or converted
b)
b) Energy is stored in a system
c)
c) Work is done on an object
d)
d) Forces act on an object
11.
Specific heat capacity is defined as:
a)
a) The amount of heat required to raise the temperature of a substance by 1°C per kilogram
b)
b) The amount of heat required to raise the temperature of a substance by 1 Kelvin per kilogram
c)
c) The amount of heat required to raise the temperature of a substance by 1°C per gram
d)
d) The amount of heat required to raise the temperature of a substance by 1 Kelvin per gram
12.
The spring constant represents:
a)
a) The energy stored in a spring
b)
b) The force required to compress or extend a spring by a certain distance
c)
c) The mass attached to a spring
d)
d) The displacement of a spring
13.
A system in physics refers to:
a)
a) Any object in motion
b)
b) A group of objects that interact with each other
c)
c) A specific set of physical laws
d)
d) The study of energy conservation
14.
Thermal conductivity measures:
a)
a) The ability of a material to conduct electricity
b)
b) The rate at which heat flows through a material
c)
c) The amount of heat required to raise the temperature of a substance
d)
d) The efficiency of a system in converting energy
15.
Waste energy in a system:
a)
a) Is always converted into useful energy
b)
b) Is lost as heat and cannot be used to perform work
c)
c) Is recycled within the system
d)
d) Is the same as efficiency
16.
The watt is the unit of measurement for:
a)
a) Power
b)
b) Energy
c)
c) Force
d)
d) Temperature
17.
Work done is defined as:
a)
a) The energy transferred to an object by a force acting on it through a distance
b)
b) The energy stored in a system
c)
c) The force applied to an object
d)
d) The displacement of an object
18.
Conservation of energy states that:
a)
a) Energy can be created or destroyed in any process
b)
b) Energy is always conserved in a closed system
c)
c) Energy decreases over time
d)
d) Energy can only be transformed into matter
19.
Efficiency is the ratio of:
a)
a) Useful energy output to total energy input
b)
b) Total energy input to useful energy output
c)
c) Waste energy to total energy input
d)
d) Total energy input to waste energy
20.
A power station is a facility where:
a)
a) Electrical energy is converted into mechanical energy
b)
b) Mechanical energy is converted into electrical energy
c)
c) Potential energy is converted into kinetic energy
d)
d) Kinetic energy is converted into potential energy
21.
Conservation of energy states that:
a)
a) Energy can be created or destroyed in any process
b)
b) Energy is always conserved in a closed system
c)
c) Energy decreases over time
d)
d) Energy can only be transformed into matter
22.
A Sankey diagram is used to:
a)
a) Display the flow of electrical current in a circuit
b)
b) Represent the energy efficiency of a system
c)
c) Show the distribution of energy in a process
d)
d) Demonstrate the conservation of momentum
23.
Renewable energy sources include:
a)
a) Fossil fuels and nuclear energy
b)
b) Wind, solar, and hydroelectric power
c)
c) Coal, oil, and natural gas
d)
d) Geothermal and biomass energy
24.
Brownian motion refers to the:
a)
a) Movement of charged particles in an electric field
b)
b) Random motion of microscopic particles suspended in a fluid
c)
c) Transfer of thermal energy through a material
d)
d) Change in frequency of electromagnetic waves
25.
The three methods of heat transfer are:
a)
a) Conduction, convection, and radiation
b)
b) Compression, expansion, and combustion
c)
c) Kinetic, potential, and thermal
d)
d) Friction, adhesion, and cohesion
26.
Energy efficiency measures:
a)
a) The total energy input to a system
b)
b) The ratio of useful energy output to total energy input
c)
c) The amount of energy stored in a system
d)
d) The rate of energy transfer in a system
27.
Energy stores include:
a)
a) Batteries, springs, and capacitors
b)
b) Power stations, transformers, and motors
c)
c) Heat, light, and sound
d)
d) Force, momentum, and velocity
28.
The formula for kinetic energy is:
a)
a) KE = 1/2mv²
b)
b) KE = mgh
c)
c) KE = P/t
d)
d) KE = Fd
29.
The formula for gravitational potential energy is:
a)
a) GPE = 1/2mv²
b)
b) GPE = mgh
c)
c) GPE = P/t
d)
d) GPE = Fd
30.
The formula for power is:
a)
a) P = 1/2mv²
b)
b) P = mgh
c)
c) P = KE/t
d)
d) P = Fd
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