Universe Review 24-25

Front

What is the term for the motion of one object around another object?

Back

Revolution.

Front

What causes day and night on Earth?

Back

The rotation of Earth on its axis.

Front

What happens to stars as we move to the left in a diagram of stellar temperatures?

Back

Stars get hotter.

Front

What will the sun become as it comes to the end of its life cycle?

Back

A red giant, then a white dwarf.

Front

What is the part of the universe where stars are 'born'?

Back

Nebula.

Front

Define 'revolution' in the context of celestial bodies.

Back

The movement of one celestial body around another, such as the Earth around the Sun.

Front

Explain the difference between rotation and revolution.

Back

Rotation refers to an object spinning on its axis, while revolution refers to an object moving around another object.

Front

What is a nebula and its significance in the universe?

Back

A nebula is a cloud of gas and dust in space, significant for being the birthplace of stars.

Front

Describe the life cycle of a star like the Sun.

Back

The Sun will go through stages: it will become a red giant, then shed its outer layers to form a planetary nebula, leaving behind a white dwarf.

Front

What is the significance of a red giant in stellar evolution?

Back

A red giant is a late stage in a star's life cycle where it expands and cools after exhausting its hydrogen fuel.