An accident is unexpected, and may cause some trouble.
An astronaut is a person who goes into outer space.
A person who is awake is not asleep.
Courage is the feeling of not being afraid.
To float is to move on top of water without sinking.
To grant something is to allow someone to have it.
Gravity is the force that makes things fall to Earth.
A jewel is a beautiful stone that is worth a lot of money.
A miner is a person who works in a mine.
A mineral is a type of substance found in the Earth.
To participate is to be active and do something.
Permission means the act of allowing some action.
To pour a liquid means to make it come out of a container.
A raw material is natural and has not been processed.
A satellite is a machine sent into space to get information.
The scale of something is its size, especially when it is very large.
To skip something is to not do it.
To stretch is to make your arms or legs reach out.
A telescope is a tool people use to look at the stars.
An underground action happens below the surface of the Earth.
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