5 Cool Facts About Dinosaurs You Should Know

What is the scientific definition of a dinosaur?

• A land-dwelling, diapsid reptile descended from archosaurs.

• A flying reptile with a large wingspan.

• Any large, extinct reptile.

• A creature that lived during the Jurassic and Cretaceous periods.

Why are Pterodactyls not classified as dinosaurs?

• They were too small to be considered dinosaurs.

• They were primarily flying creatures, not land-dwelling.

• They did not have the specialized skull openings of diapsids.

• They evolved from a different lineage than true dinosaurs.

What is convergent evolution?

• When two related animals evolve similar features.

• When animals evolve to live in different environments.

• When two unrelated animals evolve similar features to solve a specific problem.

• When animals lose features they no longer need.

What type of dinosaur was Sinosauropteryx, and what was unique about its feathers?

• It was a flying reptile with complex flight feathers.

• It was a theropod with simple, fluffy feathers that couldn't fly.

• It was a large herbivore with colorful feathers for display.

• It was a marine reptile with waterproof feathers.

What did Velociraptors have that allowed them to be described as "fluffy feathered poodles from hell"?

• Scales

• Feathers

• Spikes

• Smooth skin

Why might a large dinosaur like the T-Rex have lost its feathers, even if its ancestors had them?

• Feathers made them too slow to hunt.

• Their large size helped them stay warm without feathers.

• They lived in very hot climates where feathers were a disadvantage.

• Feathers attracted too many parasites.

Which term describes animals that rely on their environment to warm their bodies?

• Endothermic

• Mesothermic

• Ectothermic

• Homeothermic

How can scientists estimate how fast an animal's metabolism worked, even if it lived millions of years ago?

• By studying the animal's fossilized footprints.

• By analyzing the size of its teeth.

• By examining growth rings in its bones.

• By observing the types of plants found near its fossil.

What is the main source of oil and natural gas?

• Remains of ancient dinosaurs

• Ancient ocean floors with tiny organisms

• Volcanic ash and lava

• Underground freshwater sources

What is the primary material used to create most plastics?

• Petroleum

• Hydrocarbon gas liquids

• Dinosaur bones

• Plant fibers