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31 Cards in this Set
- Front
- Back
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region of space surrounding a magnet in which certain objects are attracted or repelled by the magnet |
magnetic field |
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region of space surrounding any object in which certain objects may be attracted or repelled |
electric field |
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a back and forth motion that repeatedly follows the same path |
oscillation |
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a single rise or depression in a series of waves |
pulse |
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the high point of a wave |
crest |
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the low point of a wave |
trough |
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whatever carries a wave |
medium |
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waves that consist of electric and magnetic fields |
electromagnetic waves |
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Scottish scientist who discovered electromagnetic waves; also discovered that light is a type of electromagnetic wave. |
James Clerk Maxwell |
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the speed of light |
186,000 miles per second |
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how fast a wave oscillates |
frequency |
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the length of one complete wave or cycle of oscillation measured from crest to crest or trough to trough |
wavelength |
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scientist who paved the way for our modern understanding of light when he discovered that white light is made of many colors |
Sir Isaac Newton |
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the colors of the visible spectrum |
red, orange, yellow, green, blue, indigo, violet (ROY G. BIV) |
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a movement of energy from one place to another |
wave |
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a device to make distant objects appear clearer or closer |
telescope |
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the first astronomer to make extensive use of a telescope to study the heavens |
Galileo |
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the turning back or turning aside of any wave when it hits an obstacle |
reflection |
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the bending of any wave's direction at the boundary between two wave media |
refraction |
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telescope which uses lenses to gather light and form an image |
refracting telescope |
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telescope which uses mirrors to produce an image |
reflecting telescope |
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telescope that can "see" without any atmospheric interference |
Hubble space telescope |
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a special device used by astronomers to split light into a spectrum for analysis |
spectroscope |
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instruments that collect radio waves from space |
radio telescopes |
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tiny but extremely dense rotating stars that produce rapid burst of radio waves |
pulsars |
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the scientist who developed the reflecting telescope |
Sir Isaac Newton |
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people who journey into space, have orbited the earth and even walked on the moon |
astronauts |
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the "father of modern rocketry"; he built and launched the first liquid-fueled rocket |
Robert H. Goddard |
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the astronautical engineer who helped make the US the leader in space exploration |
Wernher von Braun |
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any object that orbits a larger object |
satellite |
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state Newton's first law of motion |
an object in motion will continue moving in the same direction and at the same speed unless an outside force acts upon it |
