Astrophysics Quiz

What is the primary focus of astrophysics?

• The study of Earth's atmosphere
• The exploration of space and celestial objects
• The analysis of chemical reactions
• The study of human biology

Which galaxy is our solar system located in?

• Andromeda
• Milky Way
• Triangulum
• Whirlpool

How many stars are estimated to be in the Andromeda galaxy?

• 100 billion
• 1 trillion
• 500 million
• 10 billion

What does gravitational field strength depend on?

• The color of the celestial body
• The mass and size of celestial bodies
• The distance from Earth
• The temperature of the stars

Which of the following is NOT a key orbital relationship?

• Moons orbiting planets
• Planets orbiting moons
• Comets orbiting stars
• Artificial satellites orbiting Earth

What is the formula for calculating orbital speed?

• v = r × T
• v = 2πr ÷ T
• v = T ÷ 2πr
• v = 2r ÷ πT

What happens to a comet's speed as it approaches the Sun?

• It slows down
• It remains constant
• It speeds up
• It disappears

What is the approximate number of galaxies in the universe?

• Millions
• Billions
• Trillions
• Hundreds

Which of the following statements about gravity is true?

• Gravity only affects large objects
• Gravity is constant everywhere in the universe
• Gravity varies with mass and distance
• Gravity does not influence orbits

What is the role of gravity in the universe?

• To create light
• To shape the structure of celestial bodies
• To influence the speed of light
• To determine the color of stars