aerodynamics, forces of flight and animal fliers - Emilie Giroux | Biblioteka

1

Which of the following factors explains the main reason why ostriches cannot fly?

They cannot generate enough speed to overcome gravity

Their bodies are not streamlined enough to overcome air resistance

Their wings do not generate enough left to overcome their large weight

They cannot tuck their legs in enough to reduce drag

1

The veins in the dragonfly wings most likely provide what?

Lift for the dragonfly in flight

Propulsion for the dragonfly in flight

Streamlining of the dragonfly's wing

Stability for the dragonfly wings

4

Using what you know about the 4 forces of flight, properly label the forces acting on the bird.

gravity
thrust
lift
drag

A
B
C
D

5

Imagine an airplane flying through the air. Use what you know about lift, drag, weight, and thrust to tell you what will happen to this airplane.

Stavka koja se može prevući		Odgovarajuća stavka
If thrust becomes greater than drag, the plane...		ascends
If thrust becomes less than drag, the plane....		accellerates
If lift, weight, thrust and drag become equal, the plane would.....		decellerates
If lift becomes greater than weight, the plane...		descends
If lift becomes less than weight, the plane....		hover

1

What is an airfoil?

a special type of aluminum used in airplanes

the shape of an airplane's fueslage

the collection of feathers on the back of a bird

a structure with curved surfaces designed to give the most lift in flight, such as wings, fins etc.

1

What is aerodynamics?

the study of air in motion and the forces that act on things moving in the air

the name of the first airplane to fly

the bone structure of slying animals

the name of the test labs for aircraft experimentation

4

Which of the following adaptations do birds have that allow them to fly? Check as many that apply.

internal radar that allow them to sense wind conditions

Powerful muscles

Air sacs

Aerodynamically shaped feathers and wings

hollow bones

organs that are relatively small to reduce weight

magnetic force that makes them bouyant

3

In what ways are insects different flyers from birds? Check all that apply.

Their wings are disproportionately larger than their bodies

Some insects have more than two wings

They can only fly when they are warm

All of their bones and muscles are found in their wings

Some insects move their wings in a figure 8 pattern

1

The laws of physics have not yet figured out how bees are able to fly

Tačno

Netačno

0

The main function of the items in these images are to what?

Reduce stability and increase speed

Reduce the effects of gravity and provide thrust

Provide stability and guide direction of travel

Provide lift and increase propulsion

4

Match the forces of flight to their proper definition.

Stavka koja se može prevući		Odgovarajuća stavka
The force that acts to slow down an object as it moves through the air. Today, airplanes and other vehicles are often designed with smooth lines to cut through the air and overcome drag.		lift
The upward force that keeps a flying object in the air. Airplanes get lift from their wings.		thrust
The force that pulls objects down towards the ground. The more mass an object has, the greater the gravitational pull on the object.		drag
The force that gives an object a forward motion. The engines in an aircraft give it the thrust needed for flight.		gravity/weight

1

Which of the following images produces thrust in an airplane?

A

B

C

D

0

The reason that the bag floats up in the air is because:

air molecules inside of the bag move more slowly than the ones outside of the bag

air molecules inside of the bag are more closely together than the ones outside of the bag

the air inside the bag is the same density as the air outside of the bag

the air inside the bag is less dense than the air outside of the bag

0

A descending aircraft experience a stronger force of

thrust than purpulsion

lift than drag

thrust than drag

gravity than Lift

1

The red car probably goes faster than the blue car because

the streamline shape reduces drag

The blue car has a much bigger engine which creates too much weight

When the red car reaches top speed it creates a slight hover, which reduces friction

the red car is fleeing from the cops

1

How might a swimmer streamline their body?

wear a swim cap over their hair

Wear tight fitting swimsuits

all of these

shave their body hair

1

How might a cyclist streamline their body?

ride as close as they can behind other moving vehicles

curve or flatten their body to the bike as much as possible

add a parachute

wear jeans or bulky clothing

1

What force do parachutes rely on to fall to the ground more slowly?

drag

thrust

gravity

lift

1

What shape is the best aerodynamic?

1

2

3

1

To generate lift, a blade is angled so the _________ pressure air moves under the blade

low

high

fast

dense