9.7 Flashcards
1
Q
the time beginning about two million years ago during which early humans made implements of stone
A
Stone Age
2
Q
a mixture of a metal with a non-metal or another metal
A
Alloy
3
Q
a fine-grained sedimentary rock which leaves a very sharp edge when broken
A
Flint
4
Q
a process in which tool stones such as flint or obsidian were struck with harder stones, such as quartzite, to shear large flakes that could be used to make small tools
A
Percussion Flaking
