Unit 2 Animal Classification L10 Wings and Feathers Part 1

"Their bones are extremely light with lots of air (a)   , or hollow places, inside them to help them fly."

Choices:

-hollow

-holes

-cavaties

-bones

"Feathers also act as insulation. Insulation is an extra layer that protects bird's skin from the sun and traps in heat, providing energy and warmth in winter months."

What is the definition of insulation as it is used in the sentence?

• move smoothly

• mesh together

• an extra layer

• to heat up

What body part do birds have that enables them to fly?

Birds have (a)   to be able to fly!

What is one job of feathers on birds?

• to help birds fly because they are lightweight and mesh together

• to flap so birds stay up

• to stop air from moving through the birds wings

Describe the difference between the way a hummingbird flies and an eagle flies.

What is the cause of these two different types of flight?

• speed

• weight

• wing size and shape

• wing power

Bird bones have lots of cavities in them, which help make them lighter and able to fly. What are cavities?

(a)