Quiz on Stars

What is a star?

• A. A solid object held together by its own gravity

• B. A ball of gas held together by its own gravity

• C. A liquid mass held together by external forces

• D. A collection of dust particles held together by magnetic forces

Tags

NGSS.HS-ESS1-1

What force is continually trying to cause a star to collapse?

• A. Electromagnetic force

• B. Nuclear force

• C. Gravitational force

• D. Centrifugal force

Tags

NGSS.HS-PS2-4

What counteracts the force of gravity in a star?

• A. The pressure of cold gas and/or radiation in the star's interior

• B. The pressure of hot gas and/or radiation in the star's interior

• C. The pressure of solid matter in the star's core

• D. The pressure of magnetic fields around the star

What is the term used for the support that counteracts gravity in a star?

• A. Gravitational support

• B. Electromagnetic support

• C. Hydrostatic support

• D. Nuclear support

What do stars begin as?

• Nebulae

• Protostars

• Main sequence stars

• Black holes

What causes gas and dust in a nebula to collapse and form a protostar?

• External pressure

• Magnetic fields

• Their own gravity

• Solar winds

What happens to the center of a protostar as more material is packed into it?

• It cools down

• It becomes less dense

• It gets hotter and denser

• It remains the same

What eventually becomes great enough for nuclear fusion to occur in a protostar?

• Temperature

• Pressure

• Volume

• Mass

What does a protostar become after nuclear fusion occurs?

• A black hole

• A white dwarf

• A main sequence star

• A supernova

Tags

NGSS.HS-ESS1-3

What is a Main Sequence star?

• A star that achieves stable Hydrogen fusion in its core

• A star that has exhausted its Hydrogen fuel

• A star that is in the process of forming

• A star that is about to explode

Tags

NGSS.HS-ESS1-1