4th Grade Fossils

Since grass is growing on top of rock layers containing whales and fish we can conclude...

• ...it has only been a marine ecosystem.

• ...it has only been a land ecosystem.

• ...the grass is floating on water.

• ...it has had BOTH land & marine ecosystems.

What are fossils?

• Preserved remains or traces of ancient organisms

• Artificially created replicas of ancient organisms

• Imprints left by aliens on Earth

• Fossils are not real, they are a myth

What layer contains the oldest fossil?

• 5

• 4

• 2

• 1

How are fossils formed?

• Fossils are formed when plants or animals are frozen in ice.

• Fossils are formed when plants or animals are transformed into gas.

• Fossils are formed when plants or animals are turned into stone.

• Fossils are formed when the remains of plants or animals are preserved in sedimentary rock over time.

This land does provide evidence of a changing landscape because...

• ...it has grass on top.

• ...it contains marine and land fossils.

• ...it had bird and lizard fossils.

• ...there are fish at the bottom.

Name one type of fossil.

• petrified fossil

• fossilized rock

• fossilized bone

• fossilized plant

What conclusion can you draw about the land based on these rock layers?

• It was hot.

• It has always been land.

• It was covered by water BEFORE it was land.

• It was covered by water AFTER it was land.

What kind of fossil is an impression like a footprint?

• Press-on Nails

• Body Fossil

• Mold Fossil

• Trace Fossil

What layer contains the youngest fossil?

• 5

• 3

• 2

• 1

Give an example of a body fossil.

• a bone

• a shell

• a Frozen animal preserved in ice.

• a petrified tree