The speed at which something happens.

(a)  

A natural, fast movement of air.

(a)  

A period of time when a king or queen rules a country.

(a)  

The number of years that someone or something has existed.

(a)  

The physical form of something.

(a)  

Hot liquid rock found inside a volcano.

(a)  

Large area of land that is in one piece and not broken up by oceans.

(a)  

A person who studies the soil and rocks  to know the history of our Earth.

(a)  

Very strange.

(a)  

To say an idea or plan for someone else to consider.

(a)  

To be the right shape or size for someone or something.

(a)  

To have information about something in your mind.

(a)  

To throw out lava and ashes.

(a)