Final Exam-Astronomy (Optional)

Front

What is the relationship between matter and energy?

Back

There is energy stored in matter itself.

Front

What do we call the doomsday hypothesis that describes a reverse big bang, resulting in a hot dense end to our Universe?

Back

The big crunch.

Front

What analogy is used to explain the expansion of the universe?

Back

A balloon being inflated.

Front

What is the source of energy that sustains life on Earth?

Back

Solar energy.

Front

What does the redshift of light indicate?

Back

The light is moving away from us.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed.

Front

What is dark matter?

Back

A form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

What is the significance of the cosmic microwave background radiation?

Back

It is the afterglow of the Big Bang, providing evidence for the origin of the universe.

Front

What is a black hole?

Back

A region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates energy through nuclear fusion.