NASA | Intro to LIDAR - 3D Version

The video tutorial explains the challenges of measuring mountain heights on other planets compared to Earth. It introduces LIDAR technology, which uses laser pulses from satellites to measure distances accurately and create 3D models of planetary terrains. LIDAR's versatility extends to studying Earth's forests, ice caps, and atmospheres, as well as those of other planets, without the need for physical exploration.

What is one method mentioned for estimating mountain heights on other planets?

• Using a ruler

• Taking 3D pictures from a satellite

• Climbing the mountain

• Using a drone

What technology does NASA use to create 3D models of planetary landscapes?

• Infrared

• Radar

• Sonar

• LIDAR

How does LIDAR measure the distance between the instrument and the ground?

• By measuring sound waves

• By sending laser pulses

• By using a compass

• By using a tape measure

What can scientists study using the 3D models created by LIDAR?

• The color of the terrain

• The shape of valleys and craters

• The temperature of the planet

• The speed of the wind

Which of the following is NOT an application of LIDAR mentioned in the transcript?

• Observing changes in ice cap heights

• Measuring the height of Earth's forests

• Studying the composition of Earth's atmosphere

• Tracking the movement of tectonic plates