Topic 5: Light Pollution and Triangulation

Question 1

How we’re Telescopes Improved?

Answer 1

• Increase in diameter and length of tube (increase resolution)
• Better optics (mirrors and lenses)
• Use of computers (helps data)

Question 2

Triangulation

Answer 2

• Technique used to determines stars distance
• Create imaginary triangle between observer and object observed

Question 3

What do astronomers use to measure the universe?

Answer 3

• Astronomical unit - 150m km) (one au equals distance between sun and Earth)
• Light year - how fast light travels in year