The explosive force of the combustion pushes a _____________ down a cylinder.
piston.
Oops!
Check
Okay!
Check
baam
Lose 20 points!
Oops!
rocket
Go to first place!
Okay!
shark
Other team loses 25 points!
Okay!
thief
Give points!
5
10
15
20
25
15
What is this? It's the __________, which is the heart of the engine.
piston
Oops!
Check
Okay!
Check
15
What happens during the intake stroke? Firstly the piston moves ________ then the intake valve __________. The fuel mixture enters the cylinder and the intake valve closes.
up, opens
Oops!
Check
Okay!
Check
15
What is this? It's the _______________.
crankshaft
Oops!
Check
Okay!
Check
heart
Other team wins 10 points!
Oops!
magnet
Take 25 points!
Okay!
gift
Win 25 points!
Okay!
banana
Go to last place!
Oops!
15
The engine works by igniting a mixture of fuel and air causing ____________.
combustion
Oops!
Check
Okay!
Check
banana
Go to last place!
Oops!
seesaw
Swap points!
Okay!
shark
Other team loses 15 points!
Okay!
thief
Give points!
5
10
15
20
25
15
A ___________ _______ connects the piston to a crankshaft.
connecting rode
Oops!
Check
Okay!
Check
trap
No points!
Oops!
gift
Win 25 points!
Okay!
gift
Win 15 points!
Okay!
lifesaver
Give 20 points!
Oops!
15
What happens during the compression stroke? The piston moves up the ________, the fuel mixture is ______________.
cylinder, compressed
Oops!
Check
Okay!
Check
15
What's this? It's the ______ which is expelled in the exhaust stroke.
exhaust
Oops!
Check
Okay!
Check
15
What happens to the spark plug during the power stroke? It creates a ___________.
spark
Oops!
Check
Okay!
Check
15
What are these? They are intake and exhaust _____________.
valves
Oops!
Check
Okay!
Check
15
The combustion process is controlled by a __________________.