Exploring the Universe

What is the estimated age range of the universe according to the Big Bang theory?

• 5 to 7 billion years

• 10 to 12 billion years

• 13 to 15 billion years

• 20 to 22 billion years

Which of the following best describes a galaxy?

• A small rocky body orbiting a star

• A cluster of billions of stars held together by gravity

• A large ball of gas

• A mass of ice and dust with a glowing tail

What process allows stars to generate their own energy?

• Photosynthesis

• Nuclear fusion

• Combustion

• Magnetic resonance

Which of the following is NOT a characteristic of planets?

• They orbit a star

• They are nearly spherical

• They can have liquid water

• They are perfect spheres

What is Kepler 22b known for?

• Having a similar size and conditions to Earth

• Having the most moons in the solar system

• Being the largest planet in our solar system

• Being the closest star to the Sun

How do moons differ from planets?

• Moons orbit stars

• Moons are always smaller than planets

• Moons orbit planets

• Moons have their own light

Which moon is considered a potential site for life within our solar system?

• Ganymede

• Titan

• Europa

• Io

What is a defining feature of asteroids?

• They are made of gas

• They have glowing tails

• They are perfect spheres

• They are irregular and rocky

What are comets commonly referred to as?

• Dirty snowballs

• Miniature stars

• Rocky planets

• Gas giants

What separates the inner planets from the outer planets in our solar system?

• The Kuiper Belt

• The Milky Way

• The Oort Cloud

• The Asteroid Belt