A _____ is a type of airship that is usually filled with helium.
BLIMP
A _____ can take off straight up in the air, unlike an airplane, which needs a runway.
HELICOPTER
A _______ is a large balloon filled with heated air that has a basket below it, usually containing a heat source.
HOT-AIR BALLOON
A _____ is a machine that pushes forward many planes that are built to fly high or fast.
JET ENGINE
A ____is a mechanical device with rotating blades that moves a boat or small airplane.
PROPELLER
A _____ is a kind of spacecraft that can be used more than once.
SPACE SHUTTLE
A ______ is a group of organs that work to achieve a certain function, such as breathing or pumping blood.
BODY SYSTEM
Your ____ is like the control center for your body.
BRAIN
A _____ is information that one person conveys to another person or place.
MESSAGE
_____ are like telephone wires that carry messages between your brain and body parts.
NERVES
The ______ delivers sensory messages from the body to the brain and instructions from the brain to the muscles.
NERVOUS SYSTEM
Your _____ protects your brain from injury and creates the shape of your face.
SKULL
If one of your parents gets married again and has a daughter, that girl is your _____.
HALF SISTER
A ______ of a group can also be called a participant or a subscriber.
MEMBER
If you have a brother or a sister, you have a _____.
SIBLING
My ____ is the man who is married to my daughter.
SON-IN-LAW
