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31 Cards in this Set
- Front
- Back
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who paved the way for our modern understanding of light when he discovered that sunlight is a combination of many colors |
Sir Issac Newton |
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What are the combined colors of the rainbow |
red, orange, yellow, green, blue, and violet (Roy G BV) |
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The color sequence of the rainbow is called ? |
visible spectrum |
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region in which certain objects are attracted or repelled by the magnet |
magnetic field |
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when an object is electrically charged with "static electricity" it is surrounded by ? |
electric field |
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movement of energy from one place to another |
wave |
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back and forth motion that repeatedly follows the same path |
oscillation |
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single rise or depression in a series of waves |
pulse |
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high point of a wave |
crest |
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low point of a wave |
trough |
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whatever carries a wave is referred to as ? |
medium |
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wave consisting of an electric field and a magnetic field vibrating at right angles to each other |
electromagnetic wave |
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what is the important difference between electromagnetic waves and sound waves or water waves |
they are composed of vibrating fields instead of vibrating particles, the do not need a medium |
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who discovered electromagnetic waves |
James Clerk Maxwell |
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Maxwell also discovered what? |
light is a type of electromagnetic wave |
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electromagnetic waves travel at what speed and what is this number referred to? |
186,000 miles per second. speed of light |
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how fast the wave oscillates |
frequency |
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length of one complete wave or cycle |
wave length |
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Examples of electromagnetic waves with a frequency lower than light |
radio waves, microwaves, infrared waves |
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device to make distant objects appear clearer or closer |
telescope |
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first astronomer to make extensive us of the telescope |
Galileo |
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two basic types of telescopes, how do they work |
refracting telescope-use lenses to gather light and form and image reflecting telescope-uses mirrors to produce an image |
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the telescope launched into orbit around the earth in 1990 |
Hubble space telescope |
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special device used 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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stars produce rapid bursts of radio waves called? |
pulsars |
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people who journey into space |
astronauts |
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father of modern rocketry |
Robert H. Goddard |
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astronautical engineer who helped make the US a leader in space exploration |
Wernher von Braun |
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any object that orbits a larger object |
satellite |
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Newtons 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 |
