A Numbers Game
The time it takes light from the sun to reach Earth
8.3 minutes
The moon is a ______ ______ visible by reflected light from the sun.
natural satellite
The amount of planets in our solar system
8
A star is a _____ _______ _____ that is made up of gas and emits light
large celestial body
When the hemisphere is pointing towards the sun, it is _________
summer
93,000,000 miles
The closest celestial body to Earth in our solar system
The moon
A planet is a large spherical body that orbits a
star
Stars are grouped together in clusters known as
galaxies
Two units of measure to describe distances in space
Astronomical Unit (AU) and Light Year
The circumference of the Earth is
24,901 miles
The distance between Earth and the moon
239,000 miles
Tell me 3 characteristics of outer planets
far from the sun, gaseous surface, much bigger, less dense, have lots of moons, shorter days, longer years, colder, have rings
The hottest stars are (color)
blue
An area of space where the gravitational pull is so strong that nothing can escape
a black hole
The universe is estimated to be _______ years old
13.8 billion
The amount of moon phases in one month
8
Tell me 3 characteristics of inner planets
close to the sun, rocky surface, much smaller, denser, few moons, longer days, shorter years, warmer
The coldest stars are (color)
red
This causes the seasons on Earth
23.5 degree tilt on Earth's axis
Earth is estimated to be _______ years old
4.5 billion
The difference between waxing and waning
waxing = growing
waning = shrinking
List the planets in order - closest to the sun --> furthest from the sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The collection of large and small bodies that orbit a central star
solar system
The distance that light travels in an Earth year
a light year