The Most Extreme Explosion in the Universe

What are supernovae known for in the universe?

• Being the largest stars.

• Being the most powerful explosions.

• Creating new galaxies.

• Being the coldest objects.

Besides creating elements for life, what else can supernovae do?

• Form new planets.

• Help stars grow larger.

• Sterilize entire regions of galaxies.

• Create black holes.

What are the two main ways a supernova can happen?

• A planet colliding with a star, or two stars merging.

• A massive star's core imploding, or a white dwarf gaining too much mass.

• A star running out of hydrogen, or a star getting too hot.

• A black hole exploding, or a galaxy collapsing.

What is the first visible effect of a supernova explosion?

• A new planet forming.

• A black hole appearing.

• A spectacular cloud of hot, expanding gas that shines for about a month.

• The sudden disappearance of a star.

What is the main role of the ozone layer in Earth's atmosphere?

• To create massive global clouds.

• To absorb harmful ultraviolet (UV) radiation.

• To break apart nitrogen molecules.

• To cause lightning and wildfires.

How does supernova radiation lead to the depletion of the ozone layer?

• It directly burns away ozone molecules with heat.

• It causes nitrogen molecules to break apart and consume free oxygen, preventing ozone from reforming.

• It creates massive global clouds that block the ozone layer.

• It increases the amount of oxygen in the atmosphere, which then reacts with ozone.

Which of the following is a potential consequence of a severely depleted ozone layer?

• Increased rates of cancer in living organisms.

• A decrease in global temperatures leading to an ice age.

• More frequent and intense thunderstorms.

• An increase in the population of marine plankton.

How could supernova radiation potentially trigger an ice age on Earth?

• By directly freezing the atmosphere.

• By causing widespread wildfires that cool the planet.

• By ionizing atmospheric gas, leading to the formation of global clouds that reflect sunlight.

• By increasing the amount of greenhouse gases in the atmosphere.