SB4a Flashcards
1
Q
What are the characteristics that have changed during human evolution and how have they changed?
A
- Skull volume (increased)
- Length of bones
- Length of arms (decreased)
- Height (increased) - Toes (shorter and no longer curved)
2
Q
What are the 5 known species of humans scientists have discovered and their skull volumes?
A
- Ardipithecus ramidus (‘Ardi’)
Skull volume: 350cm³ - Australopithecus afarensis (‘Lucy’)
Skull volume: 400cm³ - Homo habilis
Skull volume: 500-600cm³ - Homo erectus
Skull volume: 850cm³ - Homo sapiens
Skull volume: 1450cm³
3
Q
Why is the fossil record incomplete?
A
- Some of the fossils are being destroyed
- Some are not discovered yet
- Some are fully decomposed (no remnants)
4
Q
Why did humans create stone tools?
A
- Hunt animals
- Kill
- Build shelter
- Skin animals
- Cut meat
5
Q
What is the difference between an old and young stone tool?
A
Older stone tools are simpler while younger stone tools are more sophisticated.
6
Q
How can we identify the age of stone tools?
A
- Determine age of rock layer
- Carbon dating
