Astronomy Final Review Flashcard

Front

What is a lunar eclipse?

Back

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, causing the Earth's shadow to fall on the Moon.

Front

At which position in the Moon’s orbit would a lunar eclipse be expected?

Back

Position C, when the Moon is directly opposite the Sun in relation to the Earth.

Front

What is the correct diagram showing the orbits of Earth, the Moon, and the Sun?

Back

Diagram C shows the correct relative positions of Earth (E), Moon (M), and Sun (S) in their orbits.

Front

What is blue shift in astronomy?

Back

Blue shift refers to the phenomenon where light from an object moving towards an observer is shifted to shorter wavelengths, indicating the object is approaching.

Front

What type of deep sky object is an open star cluster?

Back

An open star cluster is a group of stars that are loosely bound by gravity and are often found in the disk of a galaxy.

Front

What determines the evolutionary path of a star?

Back

The initial mass of a star determines its evolutionary path, influencing its lifespan and the type of supernova it may produce.

Front

What is a nebula?

Back

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

Front

What is a globular star cluster?

Back

A globular star cluster is a spherical collection of stars that are tightly bound by gravity, typically containing hundreds of thousands of stars.

Front

What is the difference between a galaxy and a star cluster?

Back

A galaxy is a massive system of stars, gas, dust, and dark matter, while a star cluster is a smaller group of stars bound together by gravity.

Front

What is red shift in astronomy?

Back

Red shift occurs when light from an object moving away from an observer is shifted to longer wavelengths, indicating the object is receding.