FEB CC Questions (2nd Quest)

What does AU stand for in astronomical terms?

• Astronomical Unit

• Angular Unit

• Area Unit

• Atomic Unit

What is the average distance from the Earth to the Sun, known as the AU?

• 149,597,870.7 kilometers

• 130,000,000 kilometers

• 160,000,000 kilometers

• 120,000,000 kilometers

What shape is the Earth's orbit around the Sun?

• Circle

• Ellipse

• Parabola

• Hyperbola

What concept helps us understand how we perceive depth using two eyes?

• Parallax

• Binocular vision

• Trigonometry

• Baseline

What is the term for the apparent shift of an object when viewed from different angles or positions?

• Depth perception

• Binocular vision

• Parallax

• Geometry

What is the distance of the first star whose parallax was successfully measured?

• 720,000 AU

• 61 light years

• 4.2 light years

• 3.26 light years

What unit is used by astronomers when the AU is too small to measure vast cosmic distances?

• Light year

• Kilometer

• Parsec

• Mile

How much brighter will a star appear if it is ten times closer to us?

• 1/4 as bright

• 2 times as bright

• 10 times as bright

• 100 times as bright

Which technique can be used to assist in measuring stars?

• Trigonometry

• Spectroscopy

• Geometry

• Binocular vision

What can we measure once we know the distance to a star?

• Its color

• Its apparent brightness and how luminous it is

• Its orbit

• Its age