Living Things that Fly -- Reading Comprehension

Why can't humans fly?

• We don't have wings

• We are too scared

• We simply are not built for it

The two forces working against all living things are:

• gravity and thrust

• gravity and drag

• gravity and lift

• gravity and electricity

Drag is caused by ...

• gravity

• air resistance

• weight of your plane

The two forces that help birds fly are

• gravity and drag

• lift and thrust

• wind and sun

• drag and lift

Wings are designed to catch the _______________ to move them.

• Sun

• Wind

• Water

Sometimes they have to put in effort and sometimes birds can just glide. This is compared to humans

• walking

• swimming

• running

Birds have very large lungs to help them

• keep the oxygen they need to flap their wings

• make the calls to other birds

• bring through their beak type

Most small rodents are actually not flying they are just .....

• jumping

• gliding

• falling

Small rodents cannot actually achieve _____________ like birds do. They use the extra skin to help glide.

• gravity

• drag

• thrust

• lift

Unlike birds and bats insects are able to ________________.

• Fly at extreme heights

• Fly silently

• Hover like a helicopter

• Dive with agility