Space Objects and Phenomena Quiz

What is the primary process that powers stars and allows them to produce light and heat?

• Nuclear fission
• Chemical reactions
• Nuclear fusion
• Radioactive decay

Which of the following best describes the life cycle of a massive star?

• Nebula → Main sequence → Red giant → White dwarf
• Nebula → Main sequence → Red giant → Supernova → Neutron star or black hole
• Nebula → Main sequence → Red dwarf → White dwarf
• Main sequence → Red giant → Planetary nebula → Black hole

What distinguishes gas giant planets from rocky planets?

• Gas giants are closer to their star
• Gas giants are primarily composed of solid materials
• Gas giants are smaller than rocky planets
• Gas giants are primarily composed of hydrogen and helium

Which type of nebula is characterized by reflecting the light of nearby stars?

• Emission nebula
• Dark nebula
• Reflection nebula
• Planetary nebula

What is the event horizon of a black hole?

• The center of a black hole where mass is concentrated
• The boundary beyond which light cannot escape
• The area where new stars form around a black hole
• The region where a dying star begins to collapse

Which of the following is NOT a type of planet mentioned in the presentation?

• Rocky planets
• Gas giants
• Ice giants
• Dwarf planets

What is the primary difference between emission nebulae and reflection nebulae?

• Emission nebulae are larger
• Emission nebulae glow due to ionized gas, while reflection nebulae reflect starlight
• Reflection nebulae are where stars are born
• Emission nebulae are remnants of dead stars

What is a light year?

• The time it takes for light to travel from the Sun to Earth
• The distance light travels in one year
• The lifespan of a small star
• The time it takes for a planet to orbit its star

Which of the following is NOT a characteristic of supermassive black holes?

• They are found at the centers of most galaxies
• They have masses millions to billions times that of the Sun
• They form from the collapse of a single massive star
• One is located at the center of our Milky Way galaxy

What is the significance of the expansion of the universe?

• It causes stars to form more quickly
• It results in galaxies moving closer together
• It was first observed by Edwin Hubble
• It explains why planets orbit stars