Flight ______ (develop) in insects before it developed in pterosaurs.
had developed
The gases that surround a planet or moon
atmosphere
If I ______ (have) more time, I ____ ____ (study) more
If I had more time, I would study more
The movement of wings up and down
flap
An aircraft that has no engine and flies on air currents
glider
Any object that revolves around a planet or object in space.
Satellite
a tool used to view distant objects in space
telescope
An aircraft that flies using long, thin parts on top of it that turn round and round very fast
helicopter
Although originally the Chinese (design) kites for military uses, they later (use) them for fun and entertainment.
had designed, used
You could have become an astronaut if you ______ Space Camp. (attend)
You could have become an astronaut if you had attended Space Camp.
If people ____ _____ (not go) to the moon in 1969, they _____ ____ _______ (invent) small computers.
If people hadn't gone to the moon in 1969, they wouldn't have invented small computers.
Before Charles Yeager became the first pilot to travel faster than the speed of sound, he (fly) for about five years
had been flying
What word is used for the distance between wing tips (anagram: sapwnnig)?
wingspan
To float in the air
glide
If I were an astronaut, I ______ to the moon. (travel)
If I were an astronaut, I would travel to the moon.
A large piece of cloth that helps you drop safely from an aircraft
parachute
Long before the Chinese (start) flying kites, early humans (try) to imitate birds.
started, had tried