2.4 Diary of the Earth

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 3

PROGRAM

Review 2.3

Explanation 2.4

Check homework 2.3

Work individually / homework

LEARNING GOALS

• You can explain how we can research the past with fossils

• You can explain how we can research the past with layered rocks

• You can explain the difference between relative and absolute age.

• You can explain the development of bacteria, fish and mammals

Oldest                                                                            Youngest

What kind of fossil do you see?

1. Trilobite
2. Plant
3. Ammonite
4. Mammoth

There was a time that all the plates were connected. You call this:

Fossilisation

Sedimentary layers from old to young

RELATIVE AGE 

What is the age of something compared to something else. Rocks at the bottom are older than the ones above.

Fossil of an ammonite in the mountains means that the rocks were formed before the plates collided.

ABSOLUTE AGE

Uranium is found in rocks. It is a radioactive element --> With special instruments they can measure the age of rocks

To measure the age with the help of radioactivity. You measure the:

1. Relative age
2. Absolute age

In the Netherlands fossils are found of a plant which only grows in a tropical climate. Explain this.

CHECK HOMEWORK

2.3

2, 3 & 6

WORK INDIVIDUALLY / HOMEWORK

2.4

1, 2, 4, 5 & 7