PPT: Energy | Year 4 Science IGCSE (Cambridge) - Class 4 PDF Download

 Page 1


E n e r g y
Page 2


E n e r g y
Energy around us
Living Things
We get our energy from the food we 
eat. This energy powers all our life 
processes including movement, 
growth, and breathing.
Non-living Things
Energy exists in moving air that 
turns wind turbines. It's present in 
light, heat, and sound waves all 
around us.
Forms of Energy
Energy takes many forms including 
light, heat, sound, and movement. 
Each form can be observed through 
its effects.
Energy is truly everywhere around us, powering both living and non-living systems. It's a fundamental force that enables 
everything from the smallest cellular processes to the largest weather patterns.
Page 3


E n e r g y
Energy around us
Living Things
We get our energy from the food we 
eat. This energy powers all our life 
processes including movement, 
growth, and breathing.
Non-living Things
Energy exists in moving air that 
turns wind turbines. It's present in 
light, heat, and sound waves all 
around us.
Forms of Energy
Energy takes many forms including 
light, heat, sound, and movement. 
Each form can be observed through 
its effects.
Energy is truly everywhere around us, powering both living and non-living systems. It's a fundamental force that enables 
everything from the smallest cellular processes to the largest weather patterns.
What is energy?
Energy Makes 
Things Move
All moving objects contain 
energy. From a rolling ball 
to a flying bird, movement 
is a clear demonstration of 
energy at work.
Energy Creates 
Change
Energy has the ability to 
cause changes in objects 
and environments. For 
example, a moving ball can 
break a window.
Energy Enables Action
We can think of energy as anything that can cause movement 
or carry out an action. We need energy for everything we do.
While we can't always see energy directly, we can observe its effects 
all around us. Energy is what enables all actions and changes in our 
world.
Page 4


E n e r g y
Energy around us
Living Things
We get our energy from the food we 
eat. This energy powers all our life 
processes including movement, 
growth, and breathing.
Non-living Things
Energy exists in moving air that 
turns wind turbines. It's present in 
light, heat, and sound waves all 
around us.
Forms of Energy
Energy takes many forms including 
light, heat, sound, and movement. 
Each form can be observed through 
its effects.
Energy is truly everywhere around us, powering both living and non-living systems. It's a fundamental force that enables 
everything from the smallest cellular processes to the largest weather patterns.
What is energy?
Energy Makes 
Things Move
All moving objects contain 
energy. From a rolling ball 
to a flying bird, movement 
is a clear demonstration of 
energy at work.
Energy Creates 
Change
Energy has the ability to 
cause changes in objects 
and environments. For 
example, a moving ball can 
break a window.
Energy Enables Action
We can think of energy as anything that can cause movement 
or carry out an action. We need energy for everything we do.
While we can't always see energy directly, we can observe its effects 
all around us. Energy is what enables all actions and changes in our 
world.
Energy transfers: Energy can move
Hot Water
Contains heat energy
Cup
Receives heat energy
Environment
Heat disperses
Energy can move from one object to another through transfer. When you pour hot water into a cup, heat energy moves from the water to the 
cup. This is an energy transfer. The cup and water eventually cool as heat energy transfers to the surrounding environment.
Energy is never used up or destroyed during these transfers. It simply moves from one place to another, forming what we can think of as an 
energy chain. The Sun provides another example, transferring heat and light energy through space to reach Earth.
Page 5


E n e r g y
Energy around us
Living Things
We get our energy from the food we 
eat. This energy powers all our life 
processes including movement, 
growth, and breathing.
Non-living Things
Energy exists in moving air that 
turns wind turbines. It's present in 
light, heat, and sound waves all 
around us.
Forms of Energy
Energy takes many forms including 
light, heat, sound, and movement. 
Each form can be observed through 
its effects.
Energy is truly everywhere around us, powering both living and non-living systems. It's a fundamental force that enables 
everything from the smallest cellular processes to the largest weather patterns.
What is energy?
Energy Makes 
Things Move
All moving objects contain 
energy. From a rolling ball 
to a flying bird, movement 
is a clear demonstration of 
energy at work.
Energy Creates 
Change
Energy has the ability to 
cause changes in objects 
and environments. For 
example, a moving ball can 
break a window.
Energy Enables Action
We can think of energy as anything that can cause movement 
or carry out an action. We need energy for everything we do.
While we can't always see energy directly, we can observe its effects 
all around us. Energy is what enables all actions and changes in our 
world.
Energy transfers: Energy can move
Hot Water
Contains heat energy
Cup
Receives heat energy
Environment
Heat disperses
Energy can move from one object to another through transfer. When you pour hot water into a cup, heat energy moves from the water to the 
cup. This is an energy transfer. The cup and water eventually cool as heat energy transfers to the surrounding environment.
Energy is never used up or destroyed during these transfers. It simply moves from one place to another, forming what we can think of as an 
energy chain. The Sun provides another example, transferring heat and light energy through space to reach Earth.
Energy changes: Energy can change form
Energy not only moves but can also change form during transfer. When you hit a drum, movement energy from your hand changes into 
sound energy as the drum skin vibrates. Similarly, electrical appliances convert electrical energy into other forms.
A fan transforms electrical energy into movement energy, though some energy also changes to sound. These transformations 
demonstrate how energy flows through systems, changing form while being conserved.
Electrical Energy
Powers appliances
Movement Energy
Creates physical action
Sound Energy
Produces audible waves
Heat Energy
Warms objects