Mercury transit 2016: Planet about to make rare appearance as it moves across the sun

The video explains the orbital characteristics of Mercury, highlighting its 88-day journey around the Sun compared to Earth's 365 days. It discusses Mercury's transit between Earth and the Sun, which occurs about three times a year but is rarely visible due to its 7-degree orbital inclination. The transit is only visible with high-powered lenses and lasts approximately 7.5 hours. The video also describes the black drop effect, a phenomenon observed during Mercury's transit.

How many days does it take for Mercury to complete one orbit around the Sun?

• 88 days

• 365 days

• 180 days

• 30 days

How often does Mercury pass between Earth and the Sun?

• Four times a year

• Three times a year

• Twice a year

• Once a year

What is the inclination of Mercury's orbit relative to Earth's orbital plane?

• 5 degrees

• 7 degrees

• 10 degrees

• 12 degrees

What is the approximate size of Mercury compared to Earth?

• Twice as large

• Half the size

• Same size

• Three times smaller

What is the black drop effect observed during Mercury's transit?

• A shadow cast by Mercury

• A teardrop shape formed by Mercury's edge

• A bright spot on the Sun

• A change in Mercury's color