Fossils and Geologic Time

In order for a fossil to form, which of the following events must happen FIRST?

• Slowly, minerals in the water replace the bone.
• Sediment covers the bone.
• An animal dies.
• The bone is no longer a bone, but a rock copy.

_____ is any living thing, plant or animal, even you!

• A paleontologist
• An organism
• A fossil
• A rock

Tags

NGSS.MS-LS1-1

_{Which rock layer in the diagram is the oldest?}

• F

• E

• B

• A

Tags

NGSS.MS-ESS1-4

A fossilized dinosaur footprint is a __________.

• cast

• amber

• trace fossil

What word do we use to describe a species which has no members still living?

• endangered
• extinct

Tags

NGSS.MS-LS4-1

an organism no longer found on Earth

• extinct
• amber
• fossil
• decay

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

the remains or traces of an organism that lived long ago

• extinct
• amber
• fossil
• decay

Tags

NGSS.MS-LS4-1

a living plant or animal

• extinct
• organism
• fossil
• decay

the hard parts of an organism usually found as a fossil

• teeth, bone, shells
• hair, nails
• amber, decay
• skin, organs

Tags

NGSS.MS-LS4-1

what is fossils ?

• the remains of died organisms

• a party

• all organisms

• the forest

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2