Vocab
What is a light year?
measures how far light travels in a year
How long does it take for light to travel from the sun to the earth?
8 minutes
True or false: The sun is a star
True
What part of the sun is the hottest?
core
What is the sun's fuel?
hydrogen
What is true brightness?
How bright a star actually is
What stars are the coldest?
Red
How many earths could fit inside the sun if we opened it up?
1.3 million
What is a constellation?
connecting stars in the sky to use like a landmark or for navigation
What is the outside of the sun?
corona
What is apparent brightness?
how bright a star looks from a distance
What are stars made of?
burning gas (hydrogen)
Ancient people used constellations for
navigation
What is the surface of the sun called?
photosphere
In what phase does the moon appear completely dark?
new moon
What is the habitable zone?
area that can support life, we won't freeze or melt, water, etc.
Why isn't the moon a star?
it doesn't produce its own light, it reflects it
Stars are classified by what two things
color and temperature
In what moon phase can we see 3/4 of the moon's light?
gibbous
Why do we have different time zones?
due to earth's rotation, different parts of earth are facing the light
What is luminosity?
how bright a star is
Why do we only see certain constellations are at certain times of the year?
The brightest star in the sky
Sirius
What is a planisphere?
a device used to show was stars/constellations are visible at any given time of year
Convective zone