Crash Course Stars

What would it take to make a gas planet like Jupiter a star?

• Stronger Gravity

• More Mass

• Hotter Surface Temperatures

• Less Mass

Who created the term Brown Dwarf?

• Astronaut Alan Shepard

• Astrophysicist Neil deGrasse Tyson

• Astronomer Jill Tarter

• Phil Plait, the host of the Crash Course show

One characteristic or way to identify a Brown Dwarf is to look for this element that other stars do not have...

• Helium

• Hydrogen

• Iron

• Lithium

The discovery of Brown Dwarfs led to 3 new star temperature classifications. Which of the following letters was NOT a new classification

• A

• L

• T

• Y

How many Brown Dwarfs have been discovered?

• Less than 50

• 125

• At least 2,000

• Over 9,000

What is the lifespan of a Red Dwarf

• 1 Million Years

• 1 Billion Years

• 1 Trillion Years

Our Sun will eventually change from a Yellow Dwarf to a few other classifications. Which of the following will it become? Select all correct answers!

• A Brown Dwarf

• A Red Giant

• A Red Dwarf

• A White Dwarf

True or False: While it is possible that the Earth could eventually be consumed by the Sun, another possibility is that the Sun's gravity will weaken and the Earth's orbit will back farther away from the Sun

• True

• False

Tags

NGSS.HS-PS2-4

NGSS.HS-ESS1-4

Newborn White Dwarfs can reach temperatures as much as how many degrees Celcius?

• 5,000

• 11,000

• 100,000

• 1,000,000

What needs to be combined for a planetary nebulae to glow? Check all that apply...

• Gas

• Radiation

• Heat

• Iron

Tags

NGSS.HS-PS4-3