WorksheetsFossils and Extinct Organisms Unit 6 Lesson 1
Total questions: 12
Worksheet time: 6mins
Joanie brought home several different seashells from the beach. Which one is a fossil?
a clam that died on the way home
a rock with an imprint of a seashell
a clump of seashells stuck together
two seashell halves that fit together
Which extinct organism is most closely related to today’s sharks?
ammonite
trilobite
megalodon
mammoth
What is the most likely reason the saber-toothed cat became extinct?
The temperature became too cold.
Saber-toothed cats were hunted by other animals.
The area in which they lived became an ocean.
Animals they depended upon for food became extinct.
What is a scientist who studies fossils called?
a biologist
a botanist
a paleontologist
a physicist
Fish live in many different environments such as lakes, ponds, and oceans. Which is one feature in fish that has changed greatly over time?
scales
bones
eyes
jaws
Hardened sap that insects can get trapped in is called what?
Amber
Ivory
Rock
Clay
A ____ can be footprints preserved in rock.
Mold
Petrified wood
Trace fossil
Minerals
What forms when a shell leaves its shape in the mud?
Cast
Mold
Footprint
Carbon film
When a species no longer exists they are called?
Endangered
Fossils
Missing
Extinct
The preserved remains or traces of a once-living organism is called what?
Animal
Mineral
Fossil
Vegetable
What forms when minerals replace the plant material in a piece of wood?
Bark
Petrified wood
Chlorophyll
Fossils
A cast forms when what fills a mold and hardens?
Soft tissue
Mud
Sand
Water
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