They are like long balloons.
blimps
fibers in the body that carry messages between the brain and other parts of the body
nerves
TRUE or FALSE: My brain doesn't work when I'm asleep.
FALSE
a group of organs in the body that work together
body system
They are pushed by the wind.
hot-air balloons
It spins like a fan's blades.
propeller
children of one's husband or wife from a previous marriage or relationship
stepchildren
Some planes today use ______.
jet engines
The ____ make the concrete stronger.
steel bars
a man who has married a child's mother but who is not the child's birth father
stepfather
a piece of information or a signal passed from one person or place to another
message
In a bridge, they are like the legs of a table.
piers
They can fly in any directions.
helicopters
a brother or sister
sibling
a man who is married to one's daughter or son
son-in-law
the bones that surround the brain and make up the head and face
skull
A bridge over a highway or road
overpass
In building a bridge, a ___ holds the water back.
dam
It is the boss of all our body systems.
brain
the body system that gathers information from and responds to the senses, and affects thinking and behavior
nervous system
TRUE or FALSE: My brain helps my heart beating and my lungs breathing.
TRUE
A brother who is related through only one parent instead of two
half brother
Who built the first airplanes?
The Wright Brothers
One who belongs to a group
member