Unit 4 Astronomy: The Moon, Sun, Stars, and Galaxy Test

Front

What is a supernova?

Back

A supernova is the explosion of a supergiant star, marking the end of its life cycle.

Front

What phase of the moon occurs right after the new moon?

Back

The Waxing Crescent phase occurs right after the new moon.

Front

What is the primary process that generates the sun's energy?

Back

The primary process is nuclear fusion, where hydrogen atoms combine to form helium, releasing energy.

Front

What causes the Moon to change phases throughout the month?

Back

The Moon changes phases due to Earth seeing it from different angles as it orbits around Earth.

Front

What elements make up most of the sun’s mass?

Back

Most of the sun's mass is made up of hydrogen and helium.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the difference between a star and a planet?

Back

A star is a luminous celestial body made of plasma that generates energy through nuclear fusion, while a planet is a celestial body that orbits a star and does not produce its own light.

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation for the origin of the universe, stating that it began as a singularity and has been expanding ever since.

Front

What is a black hole?

Back

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

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.