Definitions
The gaseous layer surrounding Earth or another heavenly body
Atmosphere
What is the order of the earth, sun and moon during a lunar eclipse?
The Earth is between the sun and the moon
The surface of the sun is
plasma
A telescope that reflects light
reflecting telescope
Another name for a shooting star
meteor
The branch of science that deals with the physical universe beyond Earth's atmosphere
Astronomy
What are the terrestrial planets?
Mercury, Venus, Earth and Mars
The two most abundant elements on the sun are
Hydrogen and Helium
a telescope that contains 2 glass lenses
refracting telescope
Does a comets tail point toward or away from the sun?
Away
A force of attraction existing between 2 masses
Gravity
Jupiter, Saturn, Uranus and Neptune
Large eruptions of energy on the sun are called
Solar Flares
how long a wave is
wave length
An organized system of millions or billions of stars, gas, solar systems, and dust that are held together by gravitational attraction
Galaxy
A natural or artificial body orbiting a planet or star
Satellite
What are 2 things that may have caused the craters on the moon?
Asteroids and Volcanoes
The visible portion of the sun is called
photosphere
The order of colors from longest wavelength to shortest is (abreviation)
ROY G BIV
one of the oldest devices that helped astronomers determine the location and motion of the sun in relation to Earth
gnomon
The action of the one surface, material, or abject rubbing against another
Friction
The moon rotates on its axis at the same rate as its revolution around which planet?
The Earth
What is the order of the sun, moon and earth during a solar eclipse?
Moon is between the sun and the Earth
Why do astronomers use telescopes orbiting above the atmosphere?
Because the atmosphere blocks many types of light waves
What problem does both the refracting and reflecting telescopes have that can produce a fuzzy image?
Spherical aberration