15. Dinosaurs and Birds

What does it mean when we say that dinosaurs are extinct?

• They are still alive

• They are not around anymore

• They are hiding somewhere

• They are living on another planet

What caused the extinction of most dinosaurs?

• Volcanic eruptions

• Giant asteroid collision

• Extreme climate changes

• Lack of food

What helped the dinosaurs that survived the extinction event?

• Their ability to fly

• Their strong jaws

• Their sharp claws

• Their adaptations

What are birds considered to be in relation to dinosaurs?

• Descendants

• Ancestors

• Unrelated

• Evolutionary cousins

Which group of dinosaurs had birdlike traits?

• Sauropods

• Carnivores

• Herbivores

• Theropods

What is one birdlike trait that some theropod dinosaurs had?

• Feathers

• Scales

• Fins

• Shells

What allowed early birds to take flight?

• Their large size

• Their powerful wings

• Their sharp beaks

• Their long tails

Why were the most birdlike theropods able to survive the extinction event?

• They were very big

• They had strong jaws

• They could fly

• They were small and light

How many types of birds do we have today?

• Less than 100

• Around 1,000

• Around 5,000

• More than 10,000

What can we call birds based on their relation to dinosaurs?

• Evolutionary cousins

• Descendants

• Ancestors

• Unrelated