1
.
Machines
____________________
us
to
do
something
.
2
.
Machines
make
____________________
easier
.
3
.
Simple
machines
often
have
one
or
two
____________________
.
4
.
An
inclined
plane
reduce
the
____________________
you
need
to
____________________
weights
.
5
.
Machines
use
____________________
.
6
.
A
lever
,
a
pulley
,
a
wheel
are
____________________
____________________
.
7
.
We
use
a
____________________
to
lift
weights
.
8
.
A
wheel
helps
us
to
____________________
.
