7.3 How about fossils?

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

7.3 how about fossils?

Which evidence for evolution are used?

Birds and butterflies both have wings. Are these wings homologous or analogous structures?

1. Homologous
2. Analogous

HOMOLOGOUS STRUCTURES

ANALOGOUS STRUCTURES

Homologous & analogous structures are examples of ...

1. Direct evidence
2. Indirect evidence

Learning goals 7.3

• You can describe what a fossil is.
  
• You can explain how fossils are formed and distinguish the different steps of the process.
  
• You can explain how fossils help biologists to argue how life on earth has developed.
  
• You can explain what an index fossil is and how it helps palaeontologists in determining the age of a geological layer.
  
• You can explain the differences between relative dating and absolute dating.
  

• You can explain how fossils support the theory of evolution. 

relative dating- index fossils

fossils are found in a specific layer, of which we know how old it is

some fossils are found a lot in a specific layer. If you find a different fossil next to it, it's probably about the same age

absolute dating - carbon dating

use of radiation

half life of radioactive particles

C14 and C12 in the atmosphere

homework

study 7.3

do the excercises 26 till30