4.4.1 Stars

Multiple Choice

Why is it important to study science, especially topics like Earth and Space?

• To understand how the universe works and our place in it

• Because science is only about memorizing facts

• To become an astronaut

• Because it is required in school

Multiple Choice

What is the closest star to Earth?

• The Sun

• Proxima Centauri

• Sirius B

• Alpha Centauri

​https://youtu.be/uWbU2r8CKfo?si=kfgAnTty-E8XvbNZ

Multiple Select

Which of the following statements about nuclear fusion in stars are correct?

• It releases massive amounts of energy.

• It combines two or more nuclei into one.

• It occurs primarily with hydrogen and helium.

• It cools down the star.

Fill in the Blanks

Stars are mostly classified based on their

, which is related to surface temperature and size.

Multiple Choice

Which type of stars are found along the center line of the Hertzsprung-Russell Diagram, and why are they considered important?

• Supergiants, because they are the brightest

• Giants, because they are the oldest

• Main Sequence, because they are the most stable

• White Dwarfs, because they are the smallest

Multiple Choice

Which of the following correctly matches a stage in the life cycle of a star with its possible outcome?

• Red Giant → Neutron Star

• Red Supergiant → Black Hole

• Average Star → Supernova

• Massive Star → Planetary Nebula

Open Ended

Explain how advancements in technology have helped scientists understand the nature and characteristics of stars.