QUIZ 01- Earth and the Universe

What is the main characteristic of a spiral galaxy?

• Triangular shape

• Football shape

• Pinwheel arms

• Circular center

How are elliptical galaxies classified?

• Based on their color

• Based on their shape

• Based on their size

• Based on their brightness

What distinguishes an irregular galaxy?

• Chaotic appearance

• Perfect symmetry

• Circular structure

• Spiral arms

What type of stars are typically found in irregular galaxies?

• Young stars

• Ancient stars

• Red giants

• White dwarfs

Why do elliptical galaxies have a smooth appearance?

• Due to intense heat

• Lack of interstellar matter

• Presence of black holes

• Abundance of nebulae

What is the sun categorized as among stars?

• Largest star

• Red giant

• Yellow dwarf

• White dwarf

Why does the sun appear larger than other stars from Earth?

• Due to its brightness

• Because it emits more heat

• Closer proximity to Earth

In what unit is distance often measured in outer space?

• Centimeters

• Light-years

• Meters

How far is Proxima Centauri from Earth in light-years?

• 1.7 light-years

• 3.5 light-years

• 4.2 light-years

What is the distance between the sun and Earth in miles?

• 50 million miles

• 75 million miles

• 100 million miles