Stars
What is a ball of gas that makes its own energy?
Star
What are clouds of gas and dust called in space?
A Nebula.
What two elements must fuse together to ignite a star?
Hydrogen and Helium
What page in the ESRT tells us about Stars?
Page 15
What is the name of our star?
The Sun
What is the difference between a star and a planet that is a gas giant (such as Jupiter)?
A star makes it's own energy, a planet does not.
Where are stars born?
Inside of nebulas.
Which stars are colder? Small star or larger (massive) stars?
Small stars.
What is the color of hot stars?
blue
How far away is our star?
Where do planets get their energy from?
A star (i.e. the sun).
What force pulls dust and gas together to make a star?
Gravity
Which stars die as supernovas and become black holes?
Massive stars.
Which star type has the highest luminosity?
Supergiant stars.
What is the name of the process that powers our Sun?
Nuclear fusion.
What is the name of the process that gives stars their power?
Nuclear fusion.
Which stars die faster? Small stars or large (massive) stars?
What controls the life cycle of a star?
It's size. The bigger a star is, the quicker it burns its fuel and the faster it dies.
What does the main sequence represent?
Stars in their 'adult' phase of life.
How will our Sun die?
The Sun will increase in size and brightness as a Red Giant, then blow up and become a white dwarf.
How does nuclear fusion work?
Fuses together two light elements to make a heavier element.
Which stars die slower and become white dwarfs?
Small stars.
Why can't stars fuse iron?
Stars are not hot enough to fuse iron.
Which star has a temperature of 5,500 Celsius and a luminosity of 5000?
Polaris
What is the luminosity of our Sun?
1