Tracing the 2017 Solar Eclipse

The video tutorial explains the creation of a data-driven visualization of the 2017 eclipse. It highlights the use of NASA products like the Lunar Reconnaissance Orbiter and SRTM for accurate mapping. The visualization uniquely shows the effects of the moon's irregular edge and observer's elevation on the shadow. It also discusses how the moon's topography, with its peaks and valleys, affects the shadow's shape, making it more polygonal than oval. The tutorial emphasizes the importance of accurate mapping for viewers to experience the totality of the eclipse.

Which NASA product was used to obtain a digital map of the moon's elevations?

• Voyager 1

• Hubble Space Telescope

• Lunar Reconnaissance Orbiter

• Mars Rover

What is the shape of the moon's shadow on Earth during an eclipse, according to the visualization?

• A square

• A polygon

• A smooth oval

• A perfect circle

How does the elevation of the observer affect the moon's shadow during an eclipse?

• It has no effect

• It alters the shadow's position

• It makes the shadow larger

• It changes the color of the shadow

What is the term used to describe the period when the moon completely covers the sun?

• Totality

• Solar maximum

• Eclipse duration

• Lunar phase

Why is accurate mapping important for observers during an eclipse?

• To measure the temperature drop

• To ensure they are in the right place to see the eclipse

• To predict weather conditions

• To calculate the eclipse duration