I WONDER - What Is A Star?

Stars are massive spheres of gas, mainly hydrogen and helium, that generate light and heat through nuclear reactions. In their cores, hydrogen atoms fuse to form helium, releasing significant energy as light and heat.

What are stars primarily made of?

• Oxygen and nitrogen

• Hydrogen and helium

• Silicon and magnesium

• Carbon and iron

How do stars produce light and heat?

• Through magnetic fields

• By gravitational collapse

• Through chemical reactions

• Via nuclear reactions

Where do nuclear reactions occur in a star?

• In the star's magnetic field

• In the star's atmosphere

• In the star's core

• On the star's surface

What is formed when hydrogen atoms fuse in a star?

• Carbon

• Oxygen

• Nitrogen

• Helium

What is released during the fusion of hydrogen atoms in stars?

• Gravity and pressure

• Electricity and magnetism

• Heat and light

• Sound and light