Space Unit (Marking Period 1) Review

Front

What is the correct format for a graph title that shows how the independent variable (IV) affects the dependent variable (DV)?

Back

The title should be in the format: 'How IV affects DV.'

Front

What element does Iron (Fe [26]) become after undergoing alpha decay?

Back

Iron (Fe [26]) becomes Chromium (Cr [24]) after alpha decay.

Front

According to Hubble's Law, what happens to the speed of galaxies as they move farther away from us?

Back

The farther the galaxy, the faster it's moving away from us.

Front

What is the term for the initial stage of a star's formation, consisting of clouds of dust and gas?

Back

Nebula.

Front

What phenomenon occurs as galaxies move away from Earth, affecting the wavelength of light?

Back

The apparent wavelength lengthens and shifts towards red.

Front

What is a nebula in the context of star formation?

Back

A nebula is a large cloud of gas and dust in space, where stars are born.

Front

What is the significance of Hubble's Law in understanding the universe?

Back

Hubble's Law indicates that the universe is expanding, as galaxies are moving away from each other.

Front

What is alpha decay in nuclear physics?

Back

Alpha decay is a type of radioactive decay where an atomic nucleus emits an alpha particle, reducing its atomic number by 2.

Front

What is the difference between a protostar and a nebula?

Back

A protostar is a stage in star formation after a nebula, where the gas and dust begin to collapse and heat up.

Front

What does the term 'redshift' refer to in astronomy?

Back

Redshift refers to the phenomenon where light from an object moving away from an observer is shifted to longer wavelengths, appearing redder.