USA: Black Lives Matter Protest demonstration outside the White House on election night.

The video provides a brief introduction to helicopters, focusing on their basic concept and significance in aviation.

What is the primary function of a helicopter?

• To fly in space

• To transport goods on land

• To travel underwater

• To hover and fly in any direction

Which part of the helicopter is responsible for lift?

• The tail rotor

• The cockpit

• The landing gear

• The main rotor

What is the role of the tail rotor in a helicopter?

• To provide lift

• To reduce noise

• To stabilize the helicopter

• To increase speed

How does a helicopter achieve forward motion?

• By tilting the main rotor

• By increasing the tail rotor speed

• By using jet engines

• By adjusting the landing gear

What allows a helicopter to hover in place?

• Its fixed wings

• The weight of the helicopter

• The main rotor's ability to change pitch

• The speed of the tail rotor