9.7 Flashcards
1
Q
Stone Age
A
Starting 2 million years ago when early humans made tools out of stone
2
Q
Alloy
A
A combination of metal with a non metal or another metal
3
Q
Flint
A
A grained sedimentary rock which leaves a sharp edge to the rock when broken
4
Q
Percussion flaking
A
A procedure in which tool stones e.g flint are hit with harder stones example quartzite to make large flakes to use them as small tools
