Steam & Combution Engines by J.F-H.
They give us power. They power trains and
automobiles (transportation) which we use every
day of ower lives. If we didn't have transport-
ation, every thing would be stopped from moving around.
People need transportation because - how would we get
any were? Steam engines trains were another kind
of transportation. The train is a way to get people
where they want faster than usual. Usually they would take a
taxi or a car. All this stuff is powered by engines. The first steam
locomotive to be tried on rails hauled 5 wagons with 10 tons of iron.
Twenty men went 9.5 miles at 5 miles per hour. Richard Trevithick
built it.
We learn from the past, like if somthing went wrong
& coudn't work. We learn from the mistakes they made
in the past so it doesn't happen to us. Vehicle exhaust emissions
are responsible for harmful pollutants. Petrol engines release
sulphur-doxide nitrous oxide, carbon monoxide, and hydrocarbons
that are harmful to humans and plants.