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Grade 6 Unit C Ch 3
Scott Foresman Science Vocab
Question | Answer |
---|---|
Solstice | a point in earth's orbit around the sun where daylight is either the longest or the shortest amount possible |
Equinox | a point in Earth's orbit around the sun where nights and days are the same length |
Lunar eclipse | a darkening of the moon when it passes through Earth's shadow |
Fusion | the combining of less massive elements to form more massive elements |
Corona | a crown of glowing gases around the sun that can be seen during a total solar eclipse |
Solar eclipse | an alignment of the sun, moon, and Earth where the moon blocks the sun from Earth's view |
Sunspot | a region on the sun of very strong magnetic field |
Solar flare | powerful eruption of very hot gases from the sun |
Aurora | the glow or display of lights in the skies near polar latitudes |
Galaxy | a system of billions of stars, gases, and dust |
Quasar | brilliant objects in space that may be the power houses of developing galaxies |
Nebula | cloud of gas and dust in space |
Black Hole | an invisible object in space whose mass and gravitational force is so great that not even light can escape |
Red shift | the changing of light waves from retreating objects to the red end of the spectrum |