The cogs on a bicycle … .
are on axles
make the back wheel spin
make the back wheel spin and they are on axles
We have .... in clocks and wind-up toys.
gears
levers
bateries
chains
Several cogs that are connected.
Gears
Which type of mechanism do we use in a corkscrew and sliding doors?
A rack and cog.
What moves in a straight line when a cog turns?
Chain
Gear
Rack
Pulley
Which type of mechanism are pedals on a bicycle?
Cog and chain
Cog and Rank
Gears
Cranks
It moves in a straight line when a cog turns:
A Rack
Several cogs that are connected.
Gears
When we turn one cog it transmits movement to the other cog thanks to the chain. Both cogs move in..........direction
The Same
Diferent
If your TV breaks, you should …
try to fixed
give it to your little brother
buy a new one immediately
throw it out
Before cleaning a toaster, you should … .
unplug it
empty it
have some toast
get it wet
What are the simple machines in scissors?
Wedge and Screw
Wedge and Incline plane
Levers and Wedges.
Levers and Pulley
It transmits the movement from one cog to another
A chain