Altitude

The transcript explains how altitude is measured using GPS equipment and pressure-based altimeters. GPS provides accurate three-dimensional positioning, while altimeters use air pressure changes to determine altitude.

What is the primary focus of the initial section of the video?

• The use of satellites in weather prediction

• The history of aviation

• The impact of altitude on climate

• The Earth's surface and altitude measurement

Which technology is highlighted for providing precise altitude measurements in three dimensions?

• Infrared sensors

• GPS equipment

• Radar systems

• Sonar technology

What is a key feature of GPS equipment in altitude measurement?

• It uses sound waves to measure distance

• It provides a two-dimensional position

• It offers a very accurate three-dimensional position

• It relies on visual signals

How do pressure-based altimeters determine altitude?

• By measuring temperature changes

• By calculating the speed of sound

• By detecting light intensity

• By using the steady drop in air pressure

What happens to air pressure as altitude increases?

• It fluctuates randomly

• It decreases

• It increases

• It remains constant