Q1 Benchmark Review

Front

What does the Big Bang Theory state about the universe?

Back

The universe is expanding.

Front

What is the term used to describe the shift in wavelength when objects move away from an observer?

Back

Red Shift

Front

What is a nebula?

Back

A cloud of dust and gas from which stars like our sun most likely formed.

Front

What characteristic determines the color of a star?

Back

Temperature.

Front

What happens during nuclear fusion?

Back

Smaller atoms are forced together to create larger atoms, releasing energy.

Front

What is the definition of a protostar?

Back

A protostar is a stage in star formation where a cloud of gas and dust begins to collapse under its own gravity.

Front

What is the relationship between a star's temperature and its color?

Back

A star's temperature determines its color; hotter stars appear blue, while cooler stars appear red.

Front

What is the significance of red shift in astronomy?

Back

Red shift indicates that an object is moving away from the observer, providing evidence for the expanding universe.

Front

What is a main sequence star?

Back

A main sequence star is a stable star that is in the main phase of its lifecycle, fusing hydrogen into helium.

Front

What is a red giant?

Back

A red giant is a late stage in a star's life cycle when it has exhausted the hydrogen in its core and expands.