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9 Cards in this Set
- Front
- Back
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A refracting telescope uses ___ _________ _____.
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2 converging lenses
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A reflecting telescope uses _______ ______ and a _________ _____.
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Concave mirrors and a converging lens.
Know the difference between reflecting and refracting. |
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Heliocentric model
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States the Earth and planets all orbit the sun.
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Geocentric model
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States the Sun, moon, planets and stares all orbit the Earth.
Now not accepted. |
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Converging lenses are used to _____ _____.
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Focus light
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What is focal length?
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Distance from the lens to its focal point.
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Waves can be reflected and _______.
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Reflected and refracted.
Know the difference. |
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What are the 2 formulas for wave speed?
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Speed = Frequency x Wavelength
Wave speed = Distance / Time (use the triangles) |
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Waves can be transverse or ________.
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Longitudinal.
Know the difference between the 2. |
