Early Earth Foldable

1
Early Earth Foldable

• Fold 2 papers so that there are 4 flaps.
• The Titles of the for should be
• Fossil Record
• Miller and Urey
• Endosymbiont Theory
• Redi and Pasteur

2
Fossil Recordwrite the bullet below and then cut
out the timeline

• Used to tell when organisms lived
• Absolute dating based on radioactive
  measurements.
• Relative dating - based on location in rock
  layers (older are at the bottom).

3
Basics of each Era

• Precambrian1st prokaryotes, 1st eukaryotes, 1st
  multicellular organisms
• Paleozoic1st fish, amphibians, reptiles, land
  plants, birds
• MesozoicDINOSAURS and CONE-BEARING PLANTS
• CenozoicMAMMALS AND FLOWERING PLANTS

4
Miller and Urey-- On the underside of the 2nd
flap write the following

• Early earth atmosphere Carbon dioxide, water,
  nitrogen, ammonia, methane and hydrogen gas
• These early components combine with lightening
  gave the primordial soup mixture to make the
  first early organic molecules (building blocks of
  living things) according to Miller and Ureys
  theory

5
Cut out picture and glue it down and write the
following bullets.

• Miller and Urey used this set up to simulate the
  early Earths conditions and made amino acids,
  fatty acids, nucleotides and monosaccharides, or
  the building blocks of organic molecules.
• This proved it could have happened this way.

6
Endosymbiont Theorywrite the following bullets

• Building blocks then built the organic molecules,
  which formed the first cellsanaerobic,
  heterotrophic prokaryotes
• Adaptations such as photosynthesis (made oxygen),
  aerobic respiration (used oxygen and made more
  ATP than before) occurred
• Then larger cells engulfed smaller cells that did
  photosynthesis or aerobic respiration and used
  them in a symbiotic relationships (endosymbiont
  theory)

7
Cut out last picture and glue it down and write
the bullet below.

• This is how eukaryotes evolved from prokaryotes.
• Progression of the evolution of organisms

Anaerobic prokaryotes ? Photosynthetic
prokaryotes ? Aerobic prokaryotes ? Eukaryotes
? Multicellular organisms
8
Redi and Pasteur write bullet points and leave
space for 2 pictures

• For a long time scientists thought life came from
  non-living things (spontaneous generation)
• Redi and Pastuer proved that life only came from
  other living things (biogenesis) with their
  experiments
• Redi used covered rotting meat to prove maggots
  came from flies not the meat itself
• Pasteur used flasks with broth that filtered out
  microorganisms in the air

9
Redis experiment
Pasteurs experiment