one
The sun is how many miles from earth?
93,000,000 mi.
what is air mostly made up of?
nitrogen
the layer where weather occurs
troposphere
when the moon is bulging it is ?
gibbous
what does the light of the moon come from?
stars around it
sun spots
darker areas on the outer surface of the sun
air pressure
total weight of air on a particular object
when air contracts is it cool or warm?
cool
layer of atmosphere closest to the earth
troposphere
topmost layer of the atmosphere
exosphere
who discovered Uranus
Sir Willian Herschel
which planet is royal blue
Neptune
earth's twin planet and the brightest in the sky
Venus
closest planet to the sun
Mercury
planet that is tipped over on its side
Uranus
the layer in the stratosphere that helps protect the earth from ultraviolet rays
ozone layer
atoms that have lost all electrons
ions
northern lights
aurora borealis
where is the north magnetic pole located
North Pole
space debri that hurtle through our atmosphere
meteoroids
what happens when the moon is on the same level as the sun and it blocks out the sun's light
solar eclipse
what happens when the moon travels through the earth's shadows
lunar eclipse
innermost section of the sun
core
largest planet
Jupiter
what protects the earth from harmful space particles
magnetic fields