Unit 4 - Our Universe

Front

What category is our Sun located in?

Back

Main Sequence

Front

When a massive star begins to cool and expand, it is known as a _____________.

Back

Red Supergiant

Front

Cosmic Microwave Background Radiation is a form of __________.

Back

Energy

Front

A star is born when __________ begins to happen.

Back

nuclear fusion

Front

What is the shape of our galaxy?

Back

barred spiral

Front

What process powers the Sun and other stars?

Back

nuclear fusion

Front

What is a Black Hole?

Back

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

Front

What is a Red Giant?

Back

A late stage in the life cycle of a star where it expands and cools after exhausting its hydrogen fuel.

Front

What is the difference between a White Dwarf and a Red Supergiant?

Back

A White Dwarf is the remnant of a star that has exhausted its nuclear fuel, while a Red Supergiant is a massive star that has expanded and cooled.

Front

What is the significance of Cosmic Microwave Background Radiation?

Back

It is the afterglow radiation from the Big Bang, providing evidence for the origin of the universe.