Biology Vce 2016 Unit 4 Aos1 (Evidence Of Evolution)

Front 1

fossils

Back 1

evidence or remains of an organism

i.e. mineralised bones, teeth and shells, tissues

Front 2

types of fossils

Back 2

trace fossiles

moulds

casts

Front 3

trace fossils

Back 3

indirect evidence such as footprints, teeth marks, tracks, arrows and fossilised faeces

Front 4

moulds

Back 4

organisms are compressed under sedimentary rock, and their tissues decay but leave the imprint in the rock

Front 5

casts

Back 5

organisms are compressed under sedimentary rock and their issues decay leaving an imprint. when another sediment fills in the mould a 3D fossil is made

Front 6

sedimentary rock

Back 6

made from layers and layers of sediment compressed together under water-sediment can be slit, sand, mud etc.

Front 7

fossilisation

Back 7

1) specimen needs to be quickly covered in sediment

2) decay needs to be prohibited

3) specimen needs to be left undisturbed for millions of years

Front 8

relative age

Back 8

age of a fossil organism, rock, or geologic feature or event defined relative to other organisms, rocks, or features or events rather than in terms of years.

Front 9

index fossils

Back 9

fossils used to define and identify geological periods