Understanding Parallax and the Transit of Venus

What is the basic principle behind using parallax to measure distances to planets?

• Comparing the angles from two different viewpoints

• Using radar to bounce signals off planets

• Calculating the time it takes for light to travel

• Measuring the brightness of the planet

Why is precision crucial when measuring distances to planets like Venus?

• Because planets are very small

• Due to the vast distances involved

• Because of the planet's rapid movement

• To avoid interference from other celestial bodies

What was a major challenge in synchronizing observations of Venus in the past?

• Inaccurate timekeeping devices

• Cloudy weather conditions

• Inability to communicate between observers

• Lack of powerful telescopes

How did observers determine the distance to Venus during its transit?

• By observing the color change of Venus

• By calculating the angle of Venus's shadow

• By timing the duration of Venus's transit across the sun

• By measuring the brightness of Venus

What does the difference in transit duration between two observers tell us?

• The distance between the observers

• The speed of Venus

• The size of Venus

• The temperature of Venus