Vocabulary about History

What is your favourite pastime?

a quantity or sheet of something that lies over a surface or between surfaces

What verb means "to consider or study an idea, a subject, etc. very carefully"?

What does the word "discover" mean?

This is an animal that lived millions of years ago but is now extinct

It is the bone structure that forms the head and surrounds and protects the brain. What is it?

This is a person who studies fossils

What's this?

the grey or black powder that is left after something, especially tobacco, wood or coal, has burnt

What verb means "to dig in the ground to look for old buildings or objects"?

What is this?