Abeka 5th Grade, Science Quiz 17 (6.2 - 6.8)
burning
Combustion is another word for __________.
propeller (prop)
The engine of the first airplane turned a _____ that pulled the airplane through the air.
transfer
takes place when one object gives some or all of the energy to another object.
lodestones
the rocks that were used to make early compasses
oxygen
what all fuel needs in order to burn
repel
like charges ______ each other
attract
opposite charges ____ each other
octane
The higher the ____ number of a gasoline, the better the "anti-knock" quality.
freezing
The temperature at which a liquid becomes a solid is called the ____ point.
melting
The temperature at which a solid becomes a liquid is called the __________ point.
boiling
The temperature at which liquid becomes a gas is called the _______ point.
