9.7 Flashcards
1
Q
alloy
A
a mixture of a metal with a non-metal or another metal
2
Q
flint
A
to go to the neather
3
Q
stone age
A
the time beginning about two million years ago during which early humans made implements of stone
4
Q
percussion flaking
A
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
5
Q
fossils
A
any remains, impression, or trace of an animal or plant of a former geological age; evidence of life in the past
6
Q
palaeontologists
A
a scientist who studies fossils
7
Q
relative age
A
the age of a rock compared with the age of another rock
8
Q
ectothermic
A
describes an animal whose body temperature is determined by its environment
