Cosmic Origins

What event is believed to have started the universe?

• Celestial Burst

• Galactic Explosion

• Big Bang

• Cosmic Collision

When did the Big Bang Theory occur?

• Exactly 20 billion years ago

• Around 5.2 billion years ago

• Approximately 13.8 billion years ago

• Approximately 10.5 billion years ago

This happens when two masses exert an attractive force on each other.

• Collision

• Fusion

• Gravity

• Inertia

Which nuclear reaction is responsible for the creation of new elements in stars?

• nuclear decay

• nuclear fusion

• nuclear chain reaction

• nuclear fission

What is the life cycle of a star like our Sun?

• The life cycle of a star like our Sun involves main sequence, red dwarf, and neutron star phases.

• The life cycle of a star like our Sun involves formation, black hole, and supernova phases.

• The life cycle of a star like our Sun involves white dwarf, black dwarf, and pulsar phases.

• The life cycle of a star like our Sun involves formation, main sequence, red giant, and white dwarf phases.

What is the final stage in the life cycle of a massive star?

• Red giant phase

• Supernova explosion

• Black hole formation

• White dwarf cooling

How are new elements formed in the universe?

• Through chemical reactions in space

• By spontaneous generation

• Through processes like nuclear fusion in stars, supernova explosions, and cosmic ray interactions.

• From the collision of asteroids

What process led to the formation of our Solar System?

• Creation by extraterrestrial beings

• Formation from a collapsing molecular cloud

• Result of a volcanic eruption

• Formation from a cosmic explosion

What is the name of the cloud of gas and dust from which the Solar System formed?

• stellar cloud

• galactic haze

• solar nebula

• cosmic mist

What are the two most abundant elements in the universe?

• Helium and Hydrogen

• Helium and Nitrogen

• Hydrogen and Oxygen

• Iron and Oxygen