1. Natural Science Unit 5
MACHINES
TYPES OF MACHINES
MACHINES AND JOBS
Machines help us do many things. They make our lives easier
and more comfortable.
Simple machines
are made up of few pieces.
Complex machines
are made up of many pieces.
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Some machines work
with human energy.
Some machines work
with electricity.
Some machines work
with petrol.
a hammer or drill
helps us apply
more force
a lamp gives us
light
a train or bus
helps us travel
faster
a lorry helps us
transport things
2. Natural Science Unit 5
MACHINES: PAST AND PRESENT
INVENTIONS
Some machine were invented a long time ago.
People use many machines. Today, machines are better and safer.
Fire Wheel Plough
raft / cruise ship Quill pen / typewriter / computer
