Definitions
Definition of Celestial
Anything that has to do with astronomical objects.
The entire span of ____ emitted by the sun
Electromagnetic wavelengths
The two elements that make up 98% of the sun
Helium and Hydrogen
The moon is the earth's only natural ___
Satellite
The earth is affected by solar winds.
False, the earth's magnetic field protects it from solar winds.
Definition of Sunspots
Visible light wavelengths are measured in ___
nanometers
Photosphere
Scattered over the moon's surface are millions of round, shallow depressions called ___
Craters
The rotation of the earth affects earth's seasons.
False, the rotation of the earth affects day and night.
Definition of Ecliptic
The path that the sun appears to follow through the stars
Name 4 types of EM wavelengths
gamma rays, x-rays, infrared, microwaves, short waves, long wave radio, ultraviolet, TV/FM, AM
The sun's atmosphere
chromosphere
Large basins that were assumed to be lakes on the moon because of their darker color formed from hardened lava.
Mare Basins
The solar eclipse occurs only at a new moon when the moon is between the sun and the earth
True
Definition of Terminator
The line between the light and dark sides of any astronomical body.
What is the part of the solar spectrum that we can see ____
Visible Spectrum
The chromosphere dissipates into this outer atmosphere of the sun
Corona
Craters are formed by ____ hitting the surface of the moon.
Meteoroids and Asteroids
A lunar eclipse only occurs at a full moon when the earth blocks the sun's light from shining on the moon.
True
Definition of Revolution
The earth revolves around the sun once a year
Our visual system is most receptive to what color light?
yellow
Hydrogen atoms combine under intense heat and pressure to form helium in a process called ___
Nuclear Fusion
The interior of the moon is composed of 4 things
Mantle, partial melt, fluid outer core, solid inner core
Tides apply only to large motions of the world oceans
False, Tides affect the earth's crust as well, called earth tides.