Astronomy Review

Front

What is the approximate age of the universe?

Back

Fourteen billion years.

Front

Which color of visible light has the shortest wavelength?

Back

Violet.

Front

What event does the term 'Big Bang' refer to?

Back

The explosion that created the universe.

Front

What evidence supports the Big Bang theory?

Back

The red shift of light from distant galaxies.

Front

Which planet has completed less than one orbit of the Sun in the last 100 years?

Back

Neptune.

Front

What is the main difference between terrestrial and Jovian planets?

Back

Terrestrial planets are rocky, while Jovian planets are gas giants.

Front

What is the significance of the red shift in astronomy?

Back

It indicates that galaxies are moving away from us, supporting the expansion of the universe.

Front

What does the term 'light year' measure?

Back

The distance that light travels in one year.

Front

What is the main component of the universe's mass?

Back

Dark matter.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter.